CHESTER CNTY SWA

NPDES permit PA0082791 · Minor NON-POTW · effective, expires 2030-03-31 · 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

1values over a limit
0required values missing, on 0 form(s)
0of 58 forms filed late

Last period with anything received: 2026-06-30. Most often over: Nitrogen, ammonia total [as N] (1).

Reporting

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

Limits in force (169)

OutfallParameterStatisticLimitMonths
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedDAILY MX report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Phosphorus, total [as P]MO AVG <= 2 mg/L all year
001Phosphorus, total [as P]DAILY MX <= 3 mg/L all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Iron, dissolved [as Fe]MO AVG <= 3.5 mg/L all year
001Iron, dissolved [as Fe]DAILY 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
001Perfluorooctanoic acid (PFOA)DAILY MX report only all year
001PerfluorooctanesulfonateDAILY MX report only all year
001Perfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
001Hexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
001Solids, total dissolvedDAILY MX report only all year
001Coliform, fecal generalGEO MEAN <= 200 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal generalGEO MEAN <= 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]DAILY MX report only all year
002Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
002pHDAILY MX report only all year
002Solids, total suspendedDAILY MX report only all year
002Oil & GreaseDAILY MX report only all year
002Nitrogen, total [as N]DAILY MX report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Nitrite + Nitrate total [as N]DAILY MX report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Cadmium, total [as Cd]DAILY MX report only all year
002Copper, total [as Cu]DAILY MX report only all year
002Iron, total [as Fe]DAILY MX report only all year
002Lead, total [as Pb]DAILY MX report only all year
002Aluminum, total [as Al]DAILY MX report only all year
002Solids, total dissolvedDAILY MX report only all year
003Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
003pHDAILY MX report only all year
003Solids, total suspendedDAILY MX report only all year
003Oil & GreaseDAILY MX report only all year
003Nitrogen, total [as N]DAILY MX report only all year
003Nitrogen, ammonia 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
003Cadmium, total [as Cd]DAILY MX report only all year
003Copper, total [as Cu]DAILY MX report only all year
003Iron, total [as Fe]DAILY MX report only all year
003Lead, total [as Pb]DAILY MX report only all year
003Aluminum, total [as Al]DAILY MX report only all year
003Solids, total dissolvedDAILY MX report only all year
004Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
004pHDAILY MX report only all year
004Solids, total suspendedDAILY MX report only all year
004Oil & GreaseDAILY MX report only all year
004Nitrogen, total [as N]DAILY MX report only all year
004Nitrogen, ammonia 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
004Cadmium, total [as Cd]DAILY MX report only all year
004Copper, total [as Cu]DAILY MX report only all year
004Iron, total [as Fe]DAILY MX report only all year
004Lead, total [as Pb]DAILY MX report only all year
004Aluminum, total [as Al]DAILY MX report only all year
004Solids, total dissolvedDAILY MX report only all year
005Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
005pHDAILY MX report only all year
005Solids, total suspendedDAILY MX report only all year
005Oil & GreaseDAILY MX report only all year
005Nitrogen, total [as N]DAILY MX report only all year
005Nitrogen, ammonia 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
005Cadmium, total [as Cd]DAILY MX report only all year
005Copper, total [as Cu]DAILY MX report only all year
005Iron, total [as Fe]DAILY MX report only all year
005Lead, total [as Pb]DAILY MX report only all year
005Aluminum, total [as Al]DAILY MX report only all year
005Solids, total dissolvedDAILY MX report only all year
006Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
006pHDAILY MX report only all year
006Solids, total suspendedDAILY MX report only all year
006Oil & GreaseDAILY MX report only all year
006Nitrogen, total [as N]DAILY MX report only all year
006Nitrogen, ammonia 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
006Cadmium, total [as Cd]DAILY MX report only all year
006Copper, total [as Cu]DAILY MX report only all year
006Iron, total [as Fe]DAILY MX report only all year
006Lead, total [as Pb]DAILY MX report only all year
006Aluminum, total [as Al]DAILY MX report only all year
006Solids, total dissolvedDAILY MX report only all year
007Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
007pHDAILY MX report only all year
007Solids, total suspendedDAILY MX report only all year
007Oil & GreaseDAILY MX report only all year
007Nitrogen, total [as N]DAILY MX report only all year
007Nitrogen, ammonia total [as N]DAILY MX report only all year
007Nitrite + Nitrate total [as N]DAILY MX report only all year
007Phosphorus, total [as P]DAILY MX report only all year
007Cadmium, total [as Cd]DAILY MX report only all year
007Copper, total [as Cu]DAILY MX report only all year
007Iron, total [as Fe]DAILY MX report only all year
007Lead, total [as Pb]DAILY MX report only all year
007Aluminum, total [as Al]DAILY MX report only all year
007Solids, total dissolvedDAILY MX report only all year
008Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
008pHDAILY MX report only all year
008Solids, total suspendedDAILY MX report only all year
008Oil & GreaseDAILY MX report only all year
008Nitrogen, total [as N]DAILY MX report only all year
008Nitrogen, ammonia total [as N]DAILY MX report only all year
008Nitrite + Nitrate total [as N]DAILY MX report only all year
008Phosphorus, total [as P]DAILY MX report only all year
008Cadmium, total [as Cd]DAILY MX report only all year
008Copper, total [as Cu]DAILY MX report only all year
008Iron, total [as Fe]DAILY MX report only all year
008Lead, total [as Pb]DAILY MX report only all year
008Aluminum, total [as Al]DAILY MX report only all year
008Solids, total dissolvedDAILY MX report only all year
100BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
100BOD, 5-day, 20 deg. CDAILY MX <= 60 mg/L all year
100BOD, 5-day, 20 deg. CMO AVG report only all year
100BOD, 5-day, 20 deg. CDAILY MX report only all year
100pHINST MIN >= 6 SU all year
100pHINST MAX <= 9 SU all year
100Solids, total suspendedMO AVG <= 27 mg/L all year
100Solids, total suspendedDAILY MX <= 88 mg/L all year
100Solids, total suspendedMO AVG report only all year
100Solids, total suspendedDAILY MX report only all year
100Nitrogen, ammonia total [as N]MO AVG <= 4.9 mg/L all year
100Nitrogen, ammonia total [as N]DAILY MX <= 10 mg/L all year
100Nitrogen, ammonia total [as N]MO AVG report only all year
100Nitrogen, ammonia total [as N]DAILY MX report only all year
100Iron, dissolved [as Fe]MO AVG <= 3.5 mg/L all year
100Iron, dissolved [as Fe]DAILY MX report only all year
100Iron, dissolved [as Fe]MO AVG report only all year
100Zinc, total [as Zn]MO AVG <= .11 mg/L all year
100Zinc, total [as Zn]DAILY MX <= .2 mg/L all year
100Zinc, total [as Zn]MO AVG report only all year
100Zinc, total [as Zn]DAILY MX report only all year
100PhenolMO AVG <= .015 mg/L all year
100PhenolDAILY MX <= .026 mg/L all year
100PhenolMO AVG report only all year
100PhenolDAILY MX report only all year
100Flow, in conduit or thru treatment plantMO AVG report only all year
100Flow, in conduit or thru treatment plantDAILY MX report only all year
100p-CresolMO AVG <= .014 mg/L all year
100p-CresolDAILY MX <= .025 mg/L all year
100p-CresolMO AVG report only all year
100p-CresolDAILY MX report only all year
100Benzoic acids, totalMO AVG <= .071 mg/L all year
100Benzoic acids, totalDAILY MX <= .12 mg/L all year
100Benzoic acids, totalMO AVG report only all year
100Benzoic acids, totalDAILY MX report only all year
100.alpha.-TerpineolMO AVG <= .016 mg/L all year
100.alpha.-TerpineolDAILY MX <= .033 mg/L all year
100.alpha.-TerpineolMO AVG report only all year
100.alpha.-TerpineolDAILY MX report only all year
101Flow, in conduit or thru treatment plantMO AVG report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
102Flow, in conduit or thru treatment plantMO AVG report only all year
102Flow, in conduit or thru treatment plantDAILY 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