DERRY TWP MUNI AUTH DAUPHIN CNTY

NPDES permit PA0026484 · Major POTW · effective, expires 2027-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

2values over a limit
48required values missing, on 1 form(s)
0of 11 forms filed late

Last period with anything received: 2026-06-30. Most often over: Coliform, fecal general (2).

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 (61)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 5 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
001BOD, 5-day, 20 deg. CDAILY MX 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 <= 1256 lb/d all year
001Solids, total suspendedWKLY AVG <= 1884 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 19.5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 6.5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 817 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 272 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]MO AVG 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]MO AVG <= 83 lb/d all year
001Cadmium, total [as Cd]MO AVG report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Cadmium, total [as Cd]MO AVG report only all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]MO AVG report only all year
001Zinc, total [as Zn]MO AVG report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]MO 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
001E. coliINST MAX report only all year
001Ultraviolet light transmittanceDAILY MN report only all year
001Nitrogen, TotalMO TOTAL report only all year
001Nitrogen, TotalANNL TOT report only all year
001Nitrogen, TotalANNL TOT <= 91668 lb all year
001Nitrogen, Ammonia TotalMO TOTAL report only all year
001Nitrogen, Ammonia TotalANNL TOT report only all year
001Nitrogen, Kjeldahl TotalMO TOTAL report only all year
001Nitrite Plus Nitrate TotalMO TOTAL report only all year
001Phosphorus, TotalMO TOTAL report only all year
001Phosphorus, TotalANNL TOT report only all year
001Phosphorus, TotalANNL TOT <= 12225 lb all year
001Solids, total dissolvedMO AVG report only all year
001Solids, total dissolvedDAILY MX report only all year
001Solids, total dissolvedMO AVG 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]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 20 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 40 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 32 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1046 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 837 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 1674 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 1340 lb/d May, Jun, Jul, Aug, Sep, Oct

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