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Hawesville STP

Sewage treatment plant, Hawesville, Kentucky. NPDES permit KY0020087, in force until Sep 30, 2031. Last 12 months: over a limit 8 times (last May 2026), 1 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 2 of 13 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], daily maximum29.6 mg/L≤ 3 mg/L887%
October 2025Nitrogen, ammonia total [as N], monthly average6.1 mg/L≤ 2 mg/L205%
October 2025Nitrogen, ammonia total [as N], monthly average6.9 lb/d≤ 5.01 lb/d38%
October 2025Nitrogen, ammonia total [as N], maximum weekly average32.59 lb/d≤ 7.52 lb/d333%
May 2026Nitrogen, ammonia total [as N], daily maximum20.9 mg/L≤ 3 mg/L597%
May 2026Nitrogen, ammonia total [as N], monthly average5.41 mg/L≤ 2 mg/L171%
May 2026Nitrogen, ammonia total [as N], monthly average8.8 lb/d≤ 5.01 lb/d76%
May 2026Nitrogen, ammonia total [as N], maximum weekly average33.989 lb/d≤ 7.52 lb/d352%

Limits in force (53)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitaveragereport only (deg F)Jan, Feb, Mar, Apr, Nov, Dec
Temperature, water deg. fahrenheitaveragereport only (deg F)May–Oct
Temperature, water deg. fahrenheitmaximumreport only (deg F)Jan, Feb, Mar, Apr, Nov, Dec
Temperature, water deg. fahrenheitmaximumreport only (deg F)May–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 7 mg/Lall year
pHminimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 75 lb/dall year
Solids, total suspendeddaily maximum≤ 113 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmaximum weekly averagereport only (mg/L)all year
Oil & Greaseaveragereport only (mg/L)all year
Oil & Greasemaximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 25 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 8 lb/dMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 38 lb/dJan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
E. coli30-day geometric mean≤ 130 #/100mLall year
E. coli7-day geometric mean≤ 240 #/100mLall year
Nitrogen, Kjeldahl Totalaveragereport only (mg/L)all year
Nitrogen, Kjeldahl Totalmaximumreport only (mg/L)all year
Nitrite Plus Nitrate Totalaveragereport only (mg/L)all year
Nitrite Plus Nitrate Totalmaximumreport only (mg/L)all year
Solids, total dissolved [TDS]averagereport only (mg/L)all year
Solids, total dissolved [TDS]maximumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 lb/dall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 38 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]maximum weekly averagereport only (mg/L)all year
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

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

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/KY0020087 · MCP: https://passage-data.com/mcp