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City of Troy

Sewage treatment plant, major discharger, Troy, Alabama. NPDES permit AL0032310, in force until Nov 30, 2029. Last 12 months: over a limit 18 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form 1 monthly (50 values), outfall 003 form S yearly, outfall 004 form S yearly, outfall 005 form S yearly, outfall 006 form S yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 3 required values missing, 0 of 20 reports late

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

All 18 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, daily maximum409≤ 298 #/100mL37%
October 2025Nitrogen, ammonia total [as N], monthly average1.52≤ 1.5 mg/L1%
October 2025Nitrogen, ammonia total [as N], weekly average144.88≤ 93.6 lb/d55%
October 2025Nitrogen, ammonia total [as N], weekly average5.62≤ 2.2 mg/L155%
March 2026E. coli, daily maximum2703≤ 2507 #/100mL8%
May 2026E. coli, daily maximum2520≤ 298 #/100mL746%
May 2026E. coli, monthly average697≤ 126 #/100mL453%
June 2026E. coli, daily maximum4998≤ 298 #/100mL1577%
June 2026E. coli, monthly average856≤ 126 #/100mL579%
June 2026Nitrogen, ammonia total [as N], monthly average1.75≤ 1.5 mg/L17%
June 2026Nitrogen, ammonia total [as N], weekly average152.56≤ 93.6 lb/d63%
June 2026Nitrogen, ammonia total [as N], weekly average5.3≤ 2.2 mg/L141%
July 2026E. coli, daily maximum2535≤ 298 #/100mL751%
July 2026E. coli, monthly average604≤ 126 #/100mL379%
July 2026Nitrogen, ammonia total [as N], monthly average1.76≤ 1.5 mg/L17%
July 2026Nitrogen, ammonia total [as N], weekly average3.16≤ 2.2 mg/L44%
August 2026E. coli, daily maximum3562≤ 298 #/100mL1095%
August 2026E. coli, monthly average944≤ 126 #/100mL649%

Limits in force (106)

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≤ 1248 lb/dall year001
Solids, total suspendedweekly average≤ 1872 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≤ 4.1 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMay–Nov001
Nitrogen, ammonia total [as N]weekly average≤ 6.1 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 2.2 mg/LMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 170 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 62.4 lb/dMay–Nov001
Nitrogen, ammonia total [as N]weekly average≤ 255 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 93.6 lb/dMay–Nov001
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
Selenium, total recoverablemonthly average= 8 ug/Lall year001
Selenium, total recoverabledaily maximum= 29.1 ug/Lall year001
Thallium, total recoverablemonthly averagereport only (ug/L)all year001
Lead, total recoverablemonthly averagereport only (ug/L)all year001
Lead, total recoverabledaily maximumreport only (ug/L)all year001
Copper, total recoverablemonthly average= 37.8 ug/Lall year001
Copper, total recoverabledaily maximum= 50.8 ug/Lall 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≤ .018 mg/Lall year001
Chlorine, total residualdaily maximum≤ .031 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=1Feb, May, Aug, Nov001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]single sample≤ 0 pass=0;fail=1Feb, May, Aug, Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 12 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 6 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 18 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 166 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 499 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 249 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 749 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 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
pHdaily minimumreport only (SU)all year005
pHdaily maximumreport only (SU)all year005
Solids, total suspendeddaily maximumreport only (mg/L)all year005
Oil & Greasedaily maximum≤ 15 mg/Lall year005
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year005
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year005
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year005
Phosphorus, total [as P]daily maximumreport only (mg/L)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
E. colidaily maximumreport only (#/100mL)all year005
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year005
pHdaily minimumreport only (SU)all year006
pHdaily maximumreport only (SU)all year006
Solids, total suspendeddaily maximumreport only (mg/L)all year006
Oil & Greasedaily maximum≤ 15 mg/Lall year006
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year006
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year006
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year006
Phosphorus, total [as P]daily maximumreport only (mg/L)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006
E. colidaily maximumreport only (#/100mL)all year006
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year006

New limits from Jan 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Lead, total recoverable, monthly average1.744 ug/Lnew2.1 ug/L (11 values)1.2×

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AL0032310 · MCP: https://passage-data.com/mcp