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City of Newton

Sewage treatment plant, major discharger, Newton, Iowa. NPDES permit IA0027723, in force until Apr 30, 2031. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (54 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
June 2026Copper, total [as Cu], daily maximum.0849≤ .04663 mg/L82%

Limits in force (98)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. C30-day averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. C30-day averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all year
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
pH30-day averagereport only (SU)all year
pHdaily maximumreport only (SU)all year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 2302 lb/dall year
Solids, total suspended7-day average≤ 3454 lb/dall year
Solids, total suspended30-day averagereport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspended30-day averagereport only (lb/d)all year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Oil & Grease30-day average≤ 10 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Nitrogen, total [as N]30-day averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]30-day averagereport only (lb/d)all year
Nitrogen, total [as N]daily maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]30-day average≤ 2.3 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 3.4 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 3.4 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 2.5 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 4 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 1.3 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 1 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 1.5 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 1 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 1.7 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 1.6 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 8.2 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 13.9 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 11.7 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 9.8 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 9.8 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 14.2 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 8.2 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 8.3 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 8.2 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 6.9 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 8.2 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 9.8 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 178.1 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 261.3 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 261.3 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 189.9 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 81.1 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 303.3 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 100.5 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 77.1 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 117 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 73.2 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 133.4 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 119.4 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 579.9 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 991.1 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 832.1 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 695.5 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 330 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 1089.6 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 360.7 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 268.6 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 579.9 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 299.3 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 579.9 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 695.5 lb/dOct
Nitrogen, Kjeldahl, total [as N]30-day averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]30-day averagereport only (lb/d)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (lb/d)all year
Phosphorus, total [as P]30-day averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]30-day averagereport only (lb/d)all year
Phosphorus, total [as P]daily maximumreport only (lb/d)all year
Cyanide, total [as CN]30-day average≤ .0052 mg/Lall year
Cyanide, total [as CN]daily maximum≤ .022 mg/Lall year
Cyanide, total [as CN]30-day average≤ .3991 lb/dall year
Cyanide, total [as CN]daily maximum≤ 1.688 lb/dall year
Copper, total [as Cu]30-day average≤ .03255 mg/Lall year
Copper, total [as Cu]daily maximum≤ .04663 mg/Lall year
Copper, total [as Cu]30-day average≤ 2.459 lb/dall year
Copper, total [as Cu]daily maximum≤ 3.43 lb/dall year
Phenols30-day average≤ .05 mg/Lall year
Phenolsdaily maximum≤ 2.5 mg/Lall year
Phenols30-day average≤ 3.837 lb/dall year
Phenolsdaily maximum≤ 191.9 lb/dall year
E. coligeometric mean≤ 167 #/100mLMar–Nov
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 N=0;Y=1all year
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 1 N=0;Y=1all year
BOD, carbonaceous [5 day, 20 C]30-day average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]30-day average≤ 1919 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 3070 lb/dall year

How strict are these limits?

Cited limits by parameter: Iowa's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0027723 · MCP: https://passage-data.com/mcp