Passage Data · Check a report · Use it from your AI

City of Huntsville Water Pollution Control

Sewage treatment plant, major discharger, Owens Cross Roads, Alabama. NPDES permit AL0055042, in force until May 31, 2028. 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 002 form S yearly, outfall 003 form S yearly, outfall 004 form S yearly
Renewal application due
Dec 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 1 required value missing, 0 of 19 reports late

Limits in force (88)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 2 mg/Lall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 1501 lb/dall year001
Solids, total suspendedweekly average≤ 2251 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≤ 4 mg/LMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 6 mg/LMay–Nov001
Nitrogen, ammonia total [as N]weekly average≤ 15 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 200 lb/dMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 500 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 300 lb/dMay–Nov001
Nitrogen, ammonia total [as N]weekly average≤ 750 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]weekly averagereport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, Kjeldahl, total [as N]weekly averagereport only (lb/d)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]weekly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)all year001
Nitrite + Nitrate total [as N]weekly averagereport only (lb/d)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]weekly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Phosphorus, total [as P]weekly averagereport only (lb/d)all year001
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≤ .1 mg/Lall year001
Chlorine, total residualdaily maximum≤ .161 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
Toxicity [chronic], Ceriodaphnia dubiasingle sample≤ 0 pass=0;fail=1Jan, Apr, Jul, Oct001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]single sample≤ 0 pass=0;fail=1Jan, Apr, Jul, Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 37.5 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 500 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1251 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 750 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 1876 lb/dJan, Feb, Mar, Apr, Dec001
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 year002
pHdaily maximumreport only (SU)all year002
Solids, total suspendeddaily maximumreport only (mg/L)all year002
Oil & Greasedaily maximum≤ 15 mg/Lall year002
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year002
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year002
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year002
Phosphorus, total [as P]daily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
E. colidaily maximumreport only (#/100mL)all year002
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year002
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.

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AL0055042 · MCP: https://passage-data.com/mcp