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Plants facing new discharge limits — by state and pollutant

for Cyanide, total [as CN]: 16 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Jan 1, 2027 and Apr 1, 2031 (50 limits); 1 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: IA 6 · LA 2 · MO 2 · NM 2 · NJ 1 · OH 1 · OK 1 · UT 1

By pollutant: all · Nitrogen, ammonia total [as N] 526 · Chlorine, total residual 272 · Phosphorus, total [as P] 106 · E. coli 103 · Copper, total [as Cu] 85 · Copper, total recoverable 63 · Solids, total suspended 60 · Chloride [as Cl] 56 · BOD, carbonaceous [5 day, 20 C] 48 · Zinc, total [as Zn] 39 · Zinc, total recoverable 36 · BOD, 5-day, 20 deg. C 35 · pH 31 · Cyanide, free available 30 · Nitrogen, total [as N] 28 · Iron, total [as Fe] 22 · Mercury, total [as Hg] 22 · Toxicity [acute], Ceriodaphnia dubia 22 · Toxicity [acute], Pimephales promelas [Fathead Minnow] 21 · Selenium, total [as Se] 20 · Di[2-ethylhexyl] phthalate [DEHP] 19 · E. coli, MTEC-MF 19 · Mercury, total low level 19 · Toxicity [chronic], Ceriodaphnia dubia 18 · Toxicity [chronic], Pimephales promelas [Fathead Minnow] 18

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
DONA ANA COUNTY (SOUTH CENTRAL REGIONAL WWTP)NM0030490NMSewage plant, major1.05 MGDCyanide, total [as CN]daily maximum 5.2 ug/L, newJun 1, 20286.2 ug/L (11 values)1.19×
PAYSON CITY CORPUT0020427UTSewage plant, major3 MGDCyanide, total [as CN]maximum monthly average 0.0057 mg/L, tighterJan 1, 20270.005 mg/L (11 values)0.877×
CITY OF PELLAIA0043869IASewage plant, major5.5 MGDCyanide, total [as CN]30-day average 0.0052 mg/L, newMar 1, 2027under 3 values—
CITY OF PELLAIA0043869IASewage plant, major5.5 MGDCyanide, total [as CN]30-day average 0.1869 lb/d, newMar 1, 2027under 3 values—
CITY OF PELLAIA0043869IASewage plant, major5.5 MGDCyanide, total [as CN]daily maximum 0.022 mg/L, newMar 1, 2027under 3 values—
CITY OF PELLAIA0043869IASewage plant, major5.5 MGDCyanide, total [as CN]daily maximum 0.7908 lb/d, newMar 1, 2027under 3 values—
Kraton Polymers US LLCOH0007030OHIndustrial, major—Cyanide, total [as CN]daily maximum 0.044 mg/L (Aug), tighterMar 1, 2027under 3 values—
Missouri Mining Investments, LLCMO0098752MOIndustrial, major—Cyanide, total [as CN]daily maximum 8.5 ug/L, newJul 1, 2027under 3 values—
Missouri Mining Investments, LLCMO0098752MOIndustrial, major—Cyanide, total [as CN]monthly average 4.3 ug/L, newJul 1, 2027under 3 values—
VALENTINE CHEMICALSLA0000906LAIndustrial—Cyanide, total [as CN]daily maximum 10.03 ug/L, newOct 1, 20270 ug/L (3 values)0×
VALENTINE CHEMICALSLA0000906LAIndustrial—Cyanide, total [as CN]monthly average 4.22 ug/L, newOct 1, 20270 ug/L (3 values)0×
DeSoto Parish Police Jury - Mundy LandfillLA0066702LASewage plant1.4024 MGDCyanide, total [as CN]daily maximum 0.011 mg/L, tighterNov 1, 2027under 3 values—
DeSoto Parish Police Jury - Mundy LandfillLA0066702LASewage plant1.4024 MGDCyanide, total [as CN]monthly average 0.0047 mg/L, tighterNov 1, 2027under 3 values—
MOUNT HOLLY TWP MUANJ0024015NJSewage plant, major9.2 MGDCyanide, total [as CN]monthly average 1610 ug/L, newApr 1, 20285.9 ug/L (11 values, 2 below detection)0.00366×
MOUNT HOLLY TWP MUANJ0024015NJSewage plant, major9.2 MGDCyanide, total [as CN]monthly average 30469 g/d, newApr 1, 202870.86 g/d (11 values, 2 below detection)0.00233×
MOUNT HOLLY TWP MUANJ0024015NJSewage plant, major9.2 MGDCyanide, total [as CN]daily maximum 2580 ug/L, newApr 1, 20285.9 ug/L (11 values, 2 below detection)0.00229×
MOUNT HOLLY TWP MUANJ0024015NJSewage plant, major9.2 MGDCyanide, total [as CN]daily maximum 48826 g/d, newApr 1, 202870.86 g/d (11 values, 2 below detection)0.00145×
DONA ANA COUNTY (SOUTH CENTRAL REGIONAL WWTP)NM0030490NMSewage plant, major1.05 MGDCyanide, total [as CN]30-day average 5.2 ug/L, newJun 1, 20283 ug/L (11 values)0.577×
DONA ANA COUNTY (SOUTH CENTRAL REGIONAL WWTP)NM0030490NMSewage plant, major1.05 MGDCyanide, total [as CN]7-day average 0.046 lb/d, newJun 1, 20280.0207 lb/d (11 values)0.45×
DONA ANA COUNTY (SOUTH CENTRAL REGIONAL WWTP)NM0030490NMSewage plant, major1.05 MGDCyanide, total [as CN]30-day average 0.046 lb/d, newJun 1, 20280.01 lb/d (11 values)0.217×
KINZE MANUFACTURING, INC.IA0076881IAIndustrial—Cyanide, total [as CN]30-day average 0.00558 lb/d, newJul 1, 2028under 3 values—
KINZE MANUFACTURING, INC.IA0076881IAIndustrial—Cyanide, total [as CN]30-day average 0.005947 mg/L, newJul 1, 2028under 3 values—
KINZE MANUFACTURING, INC.IA0076881IAIndustrial—Cyanide, total [as CN]daily maximum 0.02232 mg/L, newJul 1, 2028under 3 values—
KINZE MANUFACTURING, INC.IA0076881IAIndustrial—Cyanide, total [as CN]daily maximum 0.02094 lb/d, newJul 1, 2028under 3 values—
CARLSBAD, CITY OFNM0026395NMSewage plant, major8.5 MGDCyanide, total [as CN]30-day average 0.22 lb/d, newSep 1, 2028under 3 values—
CARLSBAD, CITY OFNM0026395NMSewage plant, major8.5 MGDCyanide, total [as CN]30-day average 5.2 ug/L, newSep 1, 2028under 3 values—
CARLSBAD, CITY OFNM0026395NMSewage plant, major8.5 MGDCyanide, total [as CN]7-day average 0.25 lb/d, newSep 1, 2028under 3 values—
CARLSBAD, CITY OFNM0026395NMSewage plant, major8.5 MGDCyanide, total [as CN]daily maximum 5.99 ug/L, newSep 1, 2028under 3 values—
DYNO NOBEL INC.MO0002402MOIndustrial, major—Cyanide, total [as CN]daily maximum 43 ug/L, newApr 1, 20295 ug/L (5 values, 5 below detection)—
DYNO NOBEL INC.MO0002402MOIndustrial, major—Cyanide, total [as CN]monthly average 21.4 ug/L, newApr 1, 20295 ug/L (5 values, 5 below detection)—
CITY OF CENTERVILLEIA0027472IASewage plant, major2.8 MGDCyanide, total [as CN]30-day average 0.0052 mg/L, newMay 1, 2029under 3 values—
CITY OF CENTERVILLEIA0027472IASewage plant, major2.8 MGDCyanide, total [as CN]30-day average 0.06505 lb/d, newMay 1, 2029under 3 values—
CITY OF CENTERVILLEIA0027472IASewage plant, major2.8 MGDCyanide, total [as CN]daily maximum 0.022 mg/L, newMay 1, 2029under 3 values—
CITY OF CENTERVILLEIA0027472IASewage plant, major2.8 MGDCyanide, total [as CN]daily maximum 0.2752 lb/d, newMay 1, 2029under 3 values—
CITY OF BOONEIA0058076IASewage plant, major15.1 MGDCyanide, total [as CN]30-day average 0.3043 lb/d, newNov 1, 2029under 3 values—
CITY OF BOONEIA0058076IASewage plant, major15.1 MGDCyanide, total [as CN]30-day average 0.00524 mg/L, newNov 1, 2029under 3 values—
CITY OF BOONEIA0058076IASewage plant, major15.1 MGDCyanide, total [as CN]daily maximum 0.02202 mg/L, newNov 1, 2029under 3 values—
CITY OF BOONEIA0058076IASewage plant, major15.1 MGDCyanide, total [as CN]daily maximum 1.285 lb/d, newNov 1, 2029under 3 values—
Koch Fertilizer Enid, LLCOK0021024OKIndustrial, major—Cyanide, total [as CN]monthly average 10.33 ug/L, newApr 1, 20308.5 ug/L (11 values)0.823×
Koch Fertilizer Enid, LLCOK0021024OKIndustrial, major—Cyanide, total [as CN]daily maximum 16.76 ug/L, newApr 1, 203013.5 ug/L (11 values)0.805×
Koch Fertilizer Enid, LLCOK0021024OKIndustrial, major—Cyanide, total [as CN]daily maximum 0.31 lb/d, newApr 1, 20300.22 lb/d (11 values)0.71×
Koch Fertilizer Enid, LLCOK0021024OKIndustrial, major—Cyanide, total [as CN]monthly average 0.19 lb/d, newApr 1, 20300.13 lb/d (11 values)0.684×
CITY OF BOYDENIA0042838IASewage plant.45 MGDCyanide, total [as CN]30-day average 0.0052 mg/L, newMar 1, 2031under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDCyanide, total [as CN]30-day average 0.01518 lb/d, newMar 1, 2031under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDCyanide, total [as CN]daily maximum 0.06422 lb/d, newMar 1, 2031under 3 values—
CITY OF BOYDENIA0042838IASewage plant.45 MGDCyanide, total [as CN]daily maximum 0.022 mg/L, newMar 1, 2031under 3 values—
CITY OF NORTH LIBERTYIA0032905IASewage plant, major10.054 MGDCyanide, total [as CN]30-day average 0.1921 lb/d, newApr 1, 2031under 3 values—
CITY OF NORTH LIBERTYIA0032905IASewage plant, major10.054 MGDCyanide, total [as CN]30-day average 0.0052 mg/L, newApr 1, 2031under 3 values—
CITY OF NORTH LIBERTYIA0032905IASewage plant, major10.054 MGDCyanide, total [as CN]daily maximum 0.022 mg/L, newApr 1, 2031under 3 values—
CITY OF NORTH LIBERTYIA0032905IASewage plant, major10.054 MGDCyanide, total [as CN]daily maximum 0.8126 lb/d, newApr 1, 2031under 3 values—

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=OH&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