DELCORA

NPDES permit PA0027103 · Major POTW · expired, expires 2026-03-31 · 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.

This permit expired on 2026-03-31 and is expired: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

3values over a limit
0required values missing, on 0 form(s)
0of 17 forms filed late

Last period with anything received: 2026-06-30. Most often over: TU Static 7Day Chronic Ceriodaphnia dubia (1), Coliform, fecal general (1), Oil & Grease (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 (67)

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 suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 11000 lb/d all year
001Solids, total suspendedWKLY AVG <= 16500 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Oil & GreaseMO AVG <= 15 mg/L all year
001Oil & GreaseINST MAX <= 30 mg/L all year
001Oil & GreaseMO AVG <= 5500 lb/d all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 23 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 15 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MO AVG <= 8440 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 5500 lb/d May, Jun, Jul, Aug, Sep
001Nitrogen, nitrite total [as N]MO AVG report only all year
001Nitrogen, nitrate total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Cyanide, total [as CN]MO AVG report only all year
001Chloride [as Cl]MO AVG report only all year
001Sulfate, total [as SO4]MO AVG report only all year
001Cadmium, total [as Cd]MO AVG report only all year
001Copper, total [as Cu]MO AVG report only all year
001Lead, total [as Pb]MO AVG report only all year
001Zinc, total [as Zn]MO AVG report only all year
001DichlorobromomethaneMO AVG report only all year
001ChlorodibromomethaneMO AVG 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
001Chlorine, total residualMO AVG <= .5 mg/L all year
001Chlorine, total residualINST MAX <= 1 mg/L all year
001Cyanide, free availableMO AVG report only all year
001PCBs Wet Weather AnalysisDAILY MX report only all year
001PCBs Dry Weather AnalysisDAILY MX report only all year
001Toxicity [acute], Ceriodaphnia dubiaDAILY MX report only all year
001Toxicity [chronic], Ceriodaphnia dubiaDAILY MX <= 5.5 tox chronic all year
001Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX report only all year
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX report only all year
001Solids, total dissolvedMO AVG <= 1000 mg/L all year
001Solids, total dissolvedDAILY MX <= 2000 mg/L all year
001Bromide [as Br]MO AVG report only all year
001Coliform, fecal generalGEO MEAN <= 200 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal generalGEO MEAN <= 200 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal generalINST MAX <= 1000 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal generalINST MAX <= 1000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 19 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 29 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 7000 lb/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 10500 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 89.25 % all year
001TU Static 7Day Chronic Ceriodaphnia dubiaDAILY MX <= 5.5 tox chronic all year
001Static 7Day Chronic Pimephales PromelasDAILY MX report only all year
028Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
028pHDAILY MX report only all year
028Solids, total suspendedDAILY MX report only all year
028Oil & GreaseDAILY MX report only all year
028Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
028Phosphorus, total [as P]DAILY MX report only all year
028Iron, dissolved [as Fe]DAILY MX report only all year
028BOD, 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