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City of Hartford

Sewage treatment plant, Hartford, Iowa. NPDES permit IA0066761, in force until Nov 30, 2026. Last 12 months: over a limit 15 times (last September 2026), 16 required values missing, 6 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (26 values)
Renewal application due
Jun 3, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
9 values over a limit, 0 required values missing, 2 of 12 reports late

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

All 15 values over a limit
Period endingParameterReportedLimitOver by
October 2025Oxygen, dissolved [DO], daily minimum3.65≥ 5 mg/L27%
January 2026Nitrogen, ammonia total [as N], 30-day average5.048≤ 3.4 mg/L48%
January 2026Nitrogen, ammonia total [as N], 30-day average8.410589≤ 7.4 lb/d14%
February 2026BOD, carbonaceous [5 day, 20 C], 7-day average96.34368≤ 87 lb/d11%
February 2026Nitrogen, ammonia total [as N], 30-day average10.2755≤ 8.6 lb/d19%
February 2026Nitrogen, ammonia total [as N], 30-day average6.675≤ 4 mg/L67%
February 2026Nitrogen, ammonia total [as N], daily maximum36.00211≤ 18.2 lb/d98%
March 2026Nitrogen, ammonia total [as N], 30-day average5.11335≤ 3.4 mg/L50%
March 2026Nitrogen, ammonia total [as N], daily maximum8.6≤ 3.9 mg/L121%
May 2026pH, daily minimum4.6≥ 6.5 SU—
June 2026Oxygen, dissolved [DO], daily minimum3.4≥ 5 mg/L32%
July 2026Oxygen, dissolved [DO], daily minimum3.1≥ 5 mg/L38%
July 2026Oxygen, dissolved [DO], daily minimum3.1≥ 5 mg/L38%
August 2026Oxygen, dissolved [DO], daily minimum3.53≥ 5 mg/L29%
September 2026Oxygen, dissolved [DO], daily minimum4.28≥ 5 mg/L14%

Limits in force (70)

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≤ 65 lb/dall year
Solids, total suspended7-day average≤ 98 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, 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≤ 3.4 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 2.3 mg/LNov
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≤ 2.5 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 1.5 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 4 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 1.6 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 3.4 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 19.9 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 4.7 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 2.8 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 2.2 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 7.4 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 2.3 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 5 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 2.1 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 3.8 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 5.4 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 3.3 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 8.6 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 3.4 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 7.4 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 6.9 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 6.9 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 43.1 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 5.7 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 5.7 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 5.7 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 6.9 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 10.2 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 18.2 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 5.7 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 lb/dMar
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≤ 54 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 87 lb/dall year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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