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City of Huntsville Water Pollution Control

Sewage treatment plant, Harvest, Alabama. NPDES permit AL0072435, in force until Apr 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form 1 monthly (43 values), outfall 003 form S yearly, outfall 004 form S yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 30 reports late

Limits in force (75)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 8.5 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 62.5 lb/dall year001
Solids, total suspendedweekly average≤ 93.8 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendedweekly averagereport only (mg/L)all year001
Solids, total suspendedmonthly averagereport only (lb/d)all year001
Solids, total suspendedweekly averagereport only (lb/d)all year001
Nitrogen, ammonia total [as N]monthly average≤ 2.4 mg/LApr–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 4.7 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 3.6 mg/LApr–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 7 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 5 lb/dApr–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 9.7 lb/dJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 7.5 lb/dApr–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 14.6 lb/dJan, Feb, Mar, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Apr–Oct001
Nitrogen, Kjeldahl, total [as N]weekly averagereport only (mg/L)Apr–Oct001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)Apr–Oct001
Nitrogen, Kjeldahl, total [as N]weekly averagereport only (lb/d)Apr–Oct001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Apr–Oct001
Nitrite + Nitrate total [as N]weekly averagereport only (mg/L)Apr–Oct001
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)Apr–Oct001
Nitrite + Nitrate total [as N]weekly averagereport only (lb/d)Apr–Oct001
Phosphorus, total [as P]monthly averagereport only (mg/L)Apr–Oct001
Phosphorus, total [as P]weekly averagereport only (mg/L)Apr–Oct001
Phosphorus, total [as P]monthly averagereport only (lb/d)Apr–Oct001
Phosphorus, total [as P]weekly averagereport only (lb/d)Apr–Oct001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly average≤ .011 mg/Lall year001
Chlorine, total residualdaily maximum≤ .019 mg/Lall year001
E. colimonthly average≤ 548 #/100mLJan, Feb, Mar, Apr, Nov, Dec001
E. colimonthly average≤ 126 #/100mLMay–Oct001
E. colidaily maximum≤ 2507 #/100mLJan, Feb, Mar, Apr, Nov, Dec001
E. colidaily maximum≤ 298 #/100mLMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 13 mg/LApr–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 37.5 mg/LJan, Feb, Mar, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 19.5 mg/LApr–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 52.1 lb/dJan, Feb, Mar, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 27.1 lb/dApr–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 78.1 lb/dJan, Feb, Mar, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40.6 lb/dApr–Oct001
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year001
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (mg/L)all year001
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)all year001
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (lb/d)all year001
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
pHdaily minimumreport only (SU)all year003
pHdaily maximumreport only (SU)all year003
Solids, total suspendeddaily maximumreport only (mg/L)all year003
Oil & Greasedaily maximum≤ 15 mg/Lall year003
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year003
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year003
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year003
Phosphorus, total [as P]daily maximumreport only (mg/L)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
E. colidaily maximumreport only (#/100mL)all year003
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year003
pHdaily minimumreport only (SU)all year004
pHdaily maximumreport only (SU)all year004
Solids, total suspendeddaily maximumreport only (mg/L)all year004
Oil & Greasedaily maximum≤ 15 mg/Lall year004
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year004
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year004
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year004
Phosphorus, total [as P]daily maximumreport only (mg/L)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
E. colidaily maximumreport only (#/100mL)all year004
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year004

How strict are these limits?

Cited limits by parameter: Alabama'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/AL0072435 · MCP: https://passage-data.com/mcp