WEST CHESTER BORO

NPDES permit PA0027031 · Major POTW · administratively continued, expires 2008-02-28 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2008-02-28 and is administratively continued: 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
26required values missing, on 1 form(s)
0of 11 forms filed late

Last period with anything received: 2026-06-30. Most often over: Nitrogen, ammonia total [as N] (2), pH (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 (40)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
001Oxygen, dissolved [DO]MO 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 suspendedMX WK AV <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 418 lb/d all year
001Solids, total suspendedMX WK AV <= 626 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 4.5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 21 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 63 lb/d Jan, Feb, Mar, Apr, Nov, Dec
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
001ChloroformMO AVG report only all year
001Phenolics, total recoverableMO AVG <= .018 mg/L all year
001Phenolics, total recoverableDAILY MX <= .036 mg/L all year
001Phenolics, total recoverableMO AVG <= .25 lb/d all year
001Phenolics, total recoverableDAILY MX <= .5 lb/d 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 <= .03 mg/L all year
001Coliform, fecal general30DA GEO <= 200 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 23 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 209 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 348 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 320 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 557 lb/d Jan, Feb, Mar, Apr, Nov, Dec
004Oxygen demand, chem. [high level] [COD]MAXIMUM report only all year
004pHMAXIMUM report only all year
004Solids, total suspendedMAXIMUM report only all year
004Oil & GreaseMAXIMUM report only all year
004Nitrogen, Kjeldahl, total [as N]MAXIMUM report only all year
004Phosphorus, total [as P]MAXIMUM report only all year
004Iron, dissolved [as Fe]MAXIMUM report only all year
004BOD, carbonaceous [5 day, 20 C]MAXIMUM 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