ARMSTRONG CNTY IND DEV AUTH

NPDES permit PA0218138 · Minor POTW · effective, expires 2029-08-31 · 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

5values over a limit
25required values missing, on 1 form(s)
0of 15 forms filed late

Last period with anything received: 2026-06-30. Most often over: Nitrogen, ammonia total [as N] (3), Solids, total suspended (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 (38)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L 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 <= 100 lb/d all year
001Solids, total suspendedWKLY AVG <= 151.1 lb/d all year
001Nitrogen, total [as N]ANNL AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 1.4 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 4.2 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 2.1 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 6.3 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 4.6 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 14 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 7 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 21 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Phosphorus, total [as P]ANNL AVG report only all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]WKLY AVG report only all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]WKLY AVG report only all year
001Zinc, total [as Zn]QRTR AVG report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]QRTR AVG report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Ultraviolet light intensityMO AVG report only all year
001Ultraviolet light intensityWKLY 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
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 all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 37.5 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 83.4 lb/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 125.1 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