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Plants facing new discharge limits — by state and pollutant

In Iowa, for Nitrogen, ammonia total [as N]: 90 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Nov 1, 2026 and Aug 1, 2031 (3961 limits); 0 of them reported a median above that limit between Oct 1, 2025 and Sep 30, 2026. EPA's file of Oct 16, 2026.

By state: all · IA 90 · LA 80 · MS 63 · MD 45 · PA 45 · OH 40 · MI 33 · VA 33 · GA 22 · SC 8 · NE 7 · NY 7 · TX 7 · IN 6 · KS 6 · MO 5 · UT 5 · OR 4 · SD 4 · TN 4 · IL 3 · AR 2 · MN 2 · NJ 2 · NM 2 · CO 1

By pollutant: all · Nitrogen, ammonia total [as N] 90 · E. coli 81 · Chloride [as Cl] 45 · Chlorine, total residual 20 · Iron, total [as Fe] 12 · Copper, total [as Cu] 9 · Cyanide, total [as CN] 6 · Phenols 6 · Sulfate, total [as SO4] 4 · Aluminum, total [as Al] 3 · Oxygen demand, chem. [high level] [COD] 3 · Lead, total [as Pb] 2 · Mercury, total [as Hg] 2 · Nitrogen, nitrate total [as N] 2 · Selenium, total [as Se] 2 · Temperature, water deg. fahrenheit 2 · Thallium, total [as Tl] 2 · Zinc, total [as Zn] 2 · Arsenic, total [as As] 1 · BOD, carbonaceous [5 day, 20 C] 1 · Bromide [as Br] 1 · Cadmium, total [as Cd] 1 · Chromium, hexavalent [as Cr] 1 · Chromium, total [as Cr] 1 · Glyphosate, total 1

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 4.8 lb/d (Nov), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 2.3 mg/L (Nov), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 7.1 lb/d (Jan), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 3.4 mg/L (Jan), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 4 mg/L (Feb), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 8.2 lb/d (Feb), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 7.1 lb/d (Mar), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 3.4 mg/L (Mar), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 1.7 mg/L (May), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 3.6 lb/d (May), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 2.7 lb/d (Jun), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 1.3 mg/L (Jun), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 1 mg/L (Jul), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 2.1 lb/d (Jul), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 2.2 lb/d (Sep), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 1.1 mg/L (Sep), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 3.2 lb/d (Apr), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 1.5 mg/L (Apr), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 1.6 mg/L (Oct), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 3.2 lb/d (Oct), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 2 lb/d (Aug), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 1 mg/L (Aug), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 2.5 mg/L (Dec), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]30-day average 5.2 lb/d (Dec), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Nov), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 5.5 lb/d (Nov), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 19.9 mg/L (Jan), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 41.5 lb/d (Jan), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 17.5 lb/d (Feb), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 8.4 mg/L (Feb), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 8.1 lb/d (Mar), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 3.9 mg/L (Mar), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 3.2 mg/L (May), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 6.7 lb/d (May), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 3.2 mg/L (Jun), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 6.7 lb/d (Jun), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 3.2 mg/L (Jul), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 6.7 lb/d (Jul), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Sep), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 5.5 lb/d (Sep), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 9.8 lb/d (Apr), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 4.7 mg/L (Apr), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 5.5 lb/d (Oct), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Oct), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 5.5 lb/d (Aug), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Aug), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 3.9 mg/L (Dec), newNov 1, 2026under 3 values—
CITY OF RICKARDSVILLEIA0066311IASewage plant.0645 MGDNitrogen, ammonia total [as N]daily maximum 8.1 lb/d (Dec), newNov 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 22 lb/d (Dec), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.6 mg/L (Dec), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 33 lb/d (Feb), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 4 mg/L (Feb), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 28.4 lb/d (Mar), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 3.4 mg/L (Mar), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.9 mg/L (Apr), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 15.8 lb/d (Apr), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.2 mg/L (May), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 18 lb/d (May), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.6 mg/L (Jun), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 13.6 lb/d (Jun), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 1 mg/L (Aug), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 8 lb/d (Aug), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.7 mg/L (Oct), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 13.8 lb/d (Oct), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 20.6 lb/d (Nov), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.5 mg/L (Nov), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 8.4 lb/d (Jul), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 1 mg/L (Jul), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 8.8 lb/d (Sep), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.1 mg/L (Sep), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 28.4 lb/d (Jan), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]30-day average 3.4 mg/L (Jan), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.9 mg/L (Dec), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 32.5 lb/d (Dec), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 70.1 lb/d (Feb), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 8.4 mg/L (Feb), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.9 mg/L (Mar), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 32.4 lb/d (Mar), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 4.7 mg/L (Apr), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 39.5 lb/d (Apr), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 26.9 lb/d (May), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.2 mg/L (May), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.2 mg/L (Jun), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 26.9 lb/d (Jun), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 22.1 lb/d (Aug), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Aug), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 22.2 lb/d (Oct), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Oct), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 22.2 lb/d (Nov), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Nov), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 26.7 lb/d (Jul), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.2 mg/L (Jul), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Sep), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 22.1 lb/d (Sep), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 19.9 mg/L (Jan), newDec 1, 2026under 3 values—
CITY OF TEMPLETONIA0033782IASewage plant—Nitrogen, ammonia total [as N]daily maximum 165.9 lb/d (Jan), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 7.2 lb/d (Dec), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 3 mg/L (Dec), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 4.2 mg/L (Jan), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 9.9 lb/d (Jan), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 4 mg/L (Mar), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 9.4 lb/d (Mar), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.9 mg/L (Apr), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 4.4 lb/d (Apr), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.2 mg/L (Jul), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.9 lb/d (Jul), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.3 mg/L (Sep), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 3.1 lb/d (Sep), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 4.5 lb/d (Oct), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.9 mg/L (Oct), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 6.4 lb/d (Nov), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.7 mg/L (Nov), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 4.8 mg/L (Feb), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 11.5 lb/d (Feb), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 3.8 lb/d (Jun), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.6 mg/L (Jun), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 5.1 lb/d (May), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.1 mg/L (May), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.8 lb/d (Aug), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.2 mg/L (Aug), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 9.4 lb/d (Dec), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.9 mg/L (Dec), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 21.1 lb/d (Jan), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 8.9 mg/L (Jan), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 9.4 lb/d (Mar), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 4 mg/L (Mar), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 11.3 lb/d (Apr), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 4.8 mg/L (Apr), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 7.8 lb/d (Jul), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.3 mg/L (Jul), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Sep), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 6.4 lb/d (Sep), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 6.4 lb/d (Oct), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Oct), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Nov), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 6.4 lb/d (Nov), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 8.5 mg/L (Feb), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 20.2 lb/d (Feb), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.3 mg/L (Jun), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 7.8 lb/d (Jun), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.3 mg/L (May), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 7.8 lb/d (May), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Aug), newDec 1, 2026under 3 values—
CITY OF THORIA0058581IASewage plant—Nitrogen, ammonia total [as N]daily maximum 6.5 lb/d (Aug), newDec 1, 2026under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 9.9 lb/d (Mar), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 3.4 mg/L (Mar), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 4.4 lb/d (Apr), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 1.5 mg/L (Apr), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 3.8 lb/d (Jun), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 2.9 lb/d (Jul), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 1 mg/L (Jul), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 4.5 lb/d (Oct), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 1.6 mg/L (Oct), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 1.1 mg/L (Sep), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 3.1 lb/d (Sep), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 2.8 lb/d (Aug), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 2.3 mg/L (Nov), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 6.8 lb/d (Nov), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 1.7 mg/L (May), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 5.1 lb/d (May), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 2.5 mg/L (Dec), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 7.2 lb/d (Dec), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 9.9 lb/d (Jan), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 3.4 mg/L (Jan), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 11.5 lb/d (Feb), tighterJan 1, 2027under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDNitrogen, ammonia total [as N]30-day average 4 mg/L (Feb), tighterJan 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 4 mg/L (Feb), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 5.7 lb/d (Feb), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.5 mg/L (Apr), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.2 lb/d (Apr), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.3 mg/L (Jun), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.9 lb/d (Jun), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.6 mg/L (Oct), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.2 lb/d (Oct), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 4.9 lb/d (Jan), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 3.4 mg/L (Jan), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 1 mg/L (Jul), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.5 lb/d (Jul), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 4.9 lb/d (Mar), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 3.4 mg/L (Mar), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.4 lb/d (Aug), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.1 mg/L (Sep), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.5 lb/d (Sep), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 3.3 lb/d (Nov), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.3 mg/L (Nov), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 3.5 lb/d (Dec), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.5 mg/L (Dec), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 2.5 lb/d (May), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]30-day average 1.8 mg/L (May), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 8.4 mg/L (Feb), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 12 lb/d (Feb), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 6.8 lb/d (Apr), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 4.7 mg/L (Apr), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.2 mg/L (Jun), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 4.6 lb/d (Jun), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.8 lb/d (Oct), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Oct), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 4.6 lb/d (Jul), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.2 mg/L (Jul), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 5.6 lb/d (Mar), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.9 mg/L (Mar), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Aug), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.8 lb/d (Aug), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Sep), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.8 lb/d (Sep), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Nov), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.8 lb/d (Nov), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 5.6 lb/d (Dec), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.9 mg/L (Dec), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 4.6 lb/d (May), tighterFeb 1, 2027under 3 values—
MAHASKA RURAL WATER SYSTEMS, INCIA0072311IASewage plant—Nitrogen, ammonia total [as N]daily maximum 3.2 mg/L (May), tighterFeb 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 18.7 lb/d (May), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 1.8 mg/L (May), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 14.1 lb/d (Jun), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 1.3 mg/L (Jun), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 1 mg/L (Jul), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 10.9 lb/d (Jul), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 1 mg/L (Aug), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 10.3 lb/d (Aug), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 1.1 mg/L (Sep), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 11.4 lb/d (Sep), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 1.6 mg/L (Oct), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 16.7 lb/d (Oct), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 3.4 mg/L (Jan), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 36.5 lb/d (Jan), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 36.5 lb/d (Mar), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 3.4 mg/L (Mar), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 2.5 mg/L (Dec), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 26.5 lb/d (Dec), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 4 mg/L (Feb), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 42.3 lb/d (Feb), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 2.3 mg/L (Nov), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 24.9 lb/d (Nov), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 16.4 lb/d (Apr), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]30-day average 1.5 mg/L (Apr), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 3.2 mg/L (May), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 34.5 lb/d (May), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 34.6 lb/d (Jun), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 3.2 mg/L (Jun), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 34.7 lb/d (Jul), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 3.3 mg/L (Jul), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Aug), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 28.7 lb/d (Aug), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 28.6 lb/d (Sep), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Sep), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Oct), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 28.5 lb/d (Oct), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 19.9 mg/L (Jan), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 212.9 lb/d (Jan), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 3.9 mg/L (Mar), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 41.6 lb/d (Mar), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 3.9 mg/L (Dec), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 41.6 lb/d (Dec), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 90.1 lb/d (Feb), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 8.4 mg/L (Feb), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 28.4 lb/d (Nov), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 2.7 mg/L (Nov), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 50.6 lb/d (Apr), newMar 1, 2027under 3 values—
CITY OF FONDAIA0046671IASewage plant.379 MGDNitrogen, ammonia total [as N]daily maximum 4.7 mg/L (Apr), newMar 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 1.2 mg/L (Sep), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 5.8 lb/d (Sep), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 8.6 lb/d (Oct), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 1.7 mg/L (Oct), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 12.8 lb/d (Nov), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 2.6 mg/L (Nov), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 2.7 mg/L (Dec), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 13.7 lb/d (Dec), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 18.9 lb/d (Jan), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 3.8 mg/L (Jan), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 4.4 mg/L (Feb), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 21.9 lb/d (Feb), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 3.8 mg/L (Mar), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]30-day average 18.8 lb/d (Mar), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]daily maximum 8.5 lb/d (Jul), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]daily maximum 1.7 mg/L (Jul), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]daily maximum 8.5 lb/d (Aug), tighterApr 1, 2027under 3 values—
CITY OF AINSWORTHIA0069183IASewage plant.302 MGDNitrogen, ammonia total [as N]daily maximum 1.7 mg/L (Aug), tighterApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 24.8 lb/d (May), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 2 mg/L (May), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 14 lb/d (Sep), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 1.1 mg/L (Sep), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 1.6 mg/L (Oct), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 20.5 lb/d (Oct), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 4.1 mg/L (Feb), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 52.2 lb/d (Feb), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 2.4 mg/L (Nov), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 30.7 lb/d (Nov), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 18.7 lb/d (Jun), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 1.5 mg/L (Jun), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 12.6 lb/d (Aug), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 1 mg/L (Aug), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 3.5 mg/L (Mar), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 44.9 lb/d (Mar), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 1.7 mg/L (Apr), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 21.8 lb/d (Apr), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 3.5 mg/L (Jan), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 45 lb/d (Jan), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 32.7 lb/d (Dec), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 2.6 mg/L (Dec), newApr 1, 2027under 3 values—
CITY OF GRAND JUNCTIONIA0041891IASewage plant.675 MGDNitrogen, ammonia total [as N]30-day average 1 mg/L (Jul), newApr 1, 2027under 3 values—

The 300 soonest limits are listed, plants already above them first; all 3961 are in the JSON at /dmr/data/upcoming.json.

Each limit is one EPA's ICIS-NPDES file holds on the permit's current version with a begin date after today, enforceable and numeric, either on a parameter the outfall was never limited on (new) or lower than the limit in force (tighter). Today's median is the plant's own reported values for the same outfall, statistic and unit between Oct 1, 2025 and Sep 30, 2026, with how many; none is shown where most were below a detection limit. Read the permit before relying on a value.

Sell to these plants? The list for your states every week, with every plant over a limit on your pollutant, as a spreadsheet, by API and by email when a new one appears: ask for the plant list, or write to info@passage-data.com. What a seller gets.

For programs and AI agents: a state's permits with these limits as JSON at /api/v1/permits?state=IA&upcoming=true, narrowed with &facility_type=potw or &min_flow_mgd=1; the whole list at /dmr/data/upcoming.json; or add https://passage-data.com/mcp as a remote MCP server (tool list_permits). Free, no key. llms.txt

From EPA's ECHO data, not the permit document itself: your permit is the final word. All states