SLIPPERY ROCK MUNI AUTH

NPDES permit PA0025569 · Major POTW · effective, expires 2028-11-30 · EPA's file as of 2026-09-19

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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

1values over a limit
72required values missing, on 2 form(s)
1of 21 forms filed late

Last period with anything received: 2026-06-30. Most often over: Oxygen, dissolved [DO] (1).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (86)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 4 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 300 lb/d all year
001Solids, total suspendedWKLY AVG <= 450 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 9.4 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 94 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 250 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Ultraviolet light intensityDAILY MX report only 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
001E. coliINST MAX report only all year
001Coliform, fecal generalMO AVG <= 200 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal generalMO AVG <= 2000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal generalINST MAX <= 1000 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal generalINST MAX <= 10000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 250 lb/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 400 lb/d all year
002Oxygen, dissolved [DO]INST MIN >= 6 mg/L all year
002pHINST MIN >= 6 SU all year
002pHINST MAX <= 9 SU all year
002Solids, total suspendedMO AVG <= 30 mg/L all year
002Solids, total suspendedINST MAX <= 60 mg/L all year
002Solids, total suspendedMO AVG <= 300 lb/d all year
002Solids, total suspendedINST MAX <= 600 lb/d all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, total [as N]INST MAX report only all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, total [as N]INST MAX report only all year
002Nitrogen, ammonia total [as N]MO AVG <= 1.2 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 3.6 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]INST MAX <= 2.4 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]INST MAX <= 7.2 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 12 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 36 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]INST MAX <= 24 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]INST MAX <= 72 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]INST MAX report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]INST MAX report only all year
002Barium, total [as Ba]MO AVG report only all year
002Barium, total [as Ba]INST MAX report only all year
002Barium, total [as Ba]MO AVG report only all year
002Barium, total [as Ba]INST MAX report only all year
002Zinc, total [as Zn]MO AVG report only all year
002Zinc, total [as Zn]INST MAX report only all year
002Zinc, total [as Zn]MO AVG report only all year
002Zinc, total [as Zn]INST MAX report only all year
002BenzeneMO AVG report only all year
002BenzeneINST MAX report only all year
002BenzeneMO AVG report only all year
002BenzeneINST MAX report only all year
002ChlorodibromomethaneMO AVG <= .99 ug/L all year
002ChlorodibromomethaneINST MAX <= 1.98 ug/L all year
002ChlorodibromomethaneMO AVG <= .0099 lb/d all year
002ChlorodibromomethaneINST MAX <= .0198 lb/d all year
0021,1,2-TrichloroethaneMO AVG <= .68 ug/L all year
0021,1,2-TrichloroethaneINST MAX <= 1.36 ug/L all year
0021,1,2-TrichloroethaneMO AVG <= .0068 lb/d all year
0021,1,2-TrichloroethaneINST MAX <= .0136 lb/d all year
002Ultraviolet light intensityINST MAX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002E. coliINST MAX report only all year
002Coliform, fecal generalMO AVG <= 200 #/100mL May, Jun, Jul, Aug, Sep
002Coliform, fecal generalMO AVG <= 2000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
002Coliform, fecal generalINST MAX <= 1000 #/100mL May, Jun, Jul, Aug, Sep
002Coliform, fecal generalINST MAX <= 10000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
002BOD, carbonaceous [5 day, 20 C]INST MAX <= 50 mg/L all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 250 lb/d all year
002BOD, carbonaceous [5 day, 20 C]INST MAX <= 500 lb/d 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