City of Troy

NPDES permit AL0032310 · Major POTW · effective, expires 2029-11-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

16values over a limit
0required values missing, on 0 form(s)
0of 18 forms filed late

Last period with anything received: 2026-07-31. Most often over: E. coli (8), Nitrogen, ammonia total [as N] (8).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among AL permits in EPA's filings — check your permit).

Limits in force (106)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 6 mg/L all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 1248 lb/d all year
001Solids, total suspendedWKLY AVG <= 1872 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 4.1 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]WKLY AVG <= 6.1 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 2.2 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MO AVG <= 170 lb/d Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 62.4 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]WKLY AVG <= 255 lb/d Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 93.6 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]WKLY AVG report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]WKLY AVG report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]WKLY AVG report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]WKLY AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Selenium, total recoverableMO AVG = 8 ug/L all year
001Selenium, total recoverableDAILY MX = 29.1 ug/L all year
001Thallium, total recoverableMO AVG report only all year
001Lead, total recoverableMO AVG report only all year
001Lead, total recoverableDAILY MX report only all year
001Copper, total recoverableMO AVG = 37.8 ug/L all year
001Copper, total recoverableDAILY MX = 50.8 ug/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= .018 mg/L all year
001Chlorine, total residualDAILY MX <= .031 mg/L all year
001E. coliMO AVG <= 548 #/100mL Jan, Feb, Mar, Apr, Nov, Dec
001E. coliMO AVG <= 126 #/100mL May, Jun, Jul, Aug, Sep, Oct
001E. coliDAILY MX <= 2507 #/100mL Jan, Feb, Mar, Apr, Nov, Dec
001E. coliDAILY MX <= 298 #/100mL May, Jun, Jul, Aug, Sep, Oct
001Toxicity [chronic], Ceriodaphnia dubiaSINGSAMP <= 0 pass=0;fail=1 Feb, May, Aug, Nov
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]SINGSAMP <= 0 pass=0;fail=1 Feb, May, Aug, Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 4 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 12 mg/L Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 6 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 18 mg/L Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 166 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 499 lb/d Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 249 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 749 lb/d Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG report only all year
001BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
003pHDAILY MN report only all year
003pHDAILY MX report only all year
003Solids, total suspendedDAILY MX report only all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Nitrogen, ammonia total [as N]DAILY MX report only all year
003Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
003Nitrite + Nitrate total [as N]DAILY MX report only all year
003Phosphorus, total [as P]DAILY MX report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003E. coliDAILY MX report only all year
003BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
004pHDAILY MN report only all year
004pHDAILY MX report only all year
004Solids, total suspendedDAILY MX report only all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Nitrogen, ammonia total [as N]DAILY MX report only all year
004Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
004Nitrite + Nitrate total [as N]DAILY MX report only all year
004Phosphorus, total [as P]DAILY MX report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004E. coliDAILY MX report only all year
004BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
005pHDAILY MN report only all year
005pHDAILY MX report only all year
005Solids, total suspendedDAILY MX report only all year
005Oil & GreaseDAILY MX <= 15 mg/L all year
005Nitrogen, ammonia total [as N]DAILY MX report only all year
005Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
005Nitrite + Nitrate total [as N]DAILY MX report only all year
005Phosphorus, total [as P]DAILY MX report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005E. coliDAILY MX report only all year
005BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
006pHDAILY MN report only all year
006pHDAILY MX report only all year
006Solids, total suspendedDAILY MX report only all year
006Oil & GreaseDAILY MX <= 15 mg/L all year
006Nitrogen, ammonia total [as N]DAILY MX report only all year
006Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
006Nitrite + Nitrate total [as N]DAILY MX report only all year
006Phosphorus, total [as P]DAILY MX report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006E. coliDAILY MX report only all year
006BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states