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City of New Hartford

Sewage treatment plant, New Hartford, Iowa. NPDES permit IA0056880, in force until Mar 31, 2029. Last 12 months: over a limit 14 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (31 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
12 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 14 values over a limit
Period endingParameterReportedLimitOver by
November 2025pH, daily maximum9.28≤ 9 SU—
December 2025pH, daily maximum9.28≤ 9 SU—
January 2026pH, daily maximum9.53≤ 9 SU—
March 2026pH, daily maximum9.33≤ 9 SU—
May 2026Solids, total suspended, 30-day average131.5≤ 80 mg/L64%
May 2026Solids, total suspended, 7-day average380≤ 120 mg/L217%
June 2026Solids, total suspended, 7-day average138≤ 120 mg/L15%
July 2026Solids, total suspended, 30-day average95.5≤ 80 mg/L19%
July 2026Solids, total suspended, 7-day average146≤ 120 mg/L22%
July 2026pH, daily maximum10≤ 9 SU—
August 2026BOD, carbonaceous [5 day, 20 C], 30-day average27.5≤ 25 mg/L10%
August 2026Chlorine, total residual, daily maximum.04≤ .036 mg/L11%
August 2026Solids, total suspended, 30-day average141.3333≤ 80 mg/L77%
August 2026Solids, total suspended, 7-day average160≤ 120 mg/L33%

Limits in force (75)

ParameterStatisticLimitMonths
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 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≤ 80 mg/Lall year
Solids, total suspended7-day average≤ 120 mg/Lall year
Solids, total suspended30-day average≤ 140 lb/dall year
Solids, total suspended7-day average≤ 210 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
Nitrogen, total [as N]30-day average≤ 33.8 lb/dall year
Nitrogen, total [as N]daily maximum≤ 55.4 lb/dall year
Nitrogen, ammonia total [as N]30-day average≤ 6.9 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 15.9 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 27.8 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 10.1 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 6.9 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 8.4 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 8.4 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 8.9 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 8.1 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 6.9 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 7.8 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 8.4 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 6.9 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 15.9 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 27.8 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 6.9 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 8.9 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 8.1 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 6.9 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 7.8 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 8.5 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 21.6 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 42.5 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 12.5 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 8.5 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 10.4 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 10.4 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 12.1 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 10.7 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 8.5 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 9.4 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 10.4 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 8.5 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 21.6 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 42.5 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 12.5 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 8.5 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 10.4 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 10.4 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 10.7 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 8.5 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 9.4 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 10.4 lb/dJun
Chlorine, total residual30-day average≤ .036 mg/Lall year
Chlorine, total residualdaily maximum≤ .036 mg/Lall year
Chlorine, total residual30-day average≤ .049 lb/dall year
Chlorine, total residualdaily maximum≤ .049 lb/dall year
E. coligeometric mean≤ 126 #/100mLMar–Nov
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≤ 43 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 70 lb/dall year

How strict are these limits?

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

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