City of Winlock

NPDES permit WA0021199 · Minor POTW · effective, expires 2028-02-29 · 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

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

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (46)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeAVERAGE report only (alert) all year
001Temperature, water deg. centigradeDAILY MX report only (alert) all year
001Oxygen, dissolved [DO]Single Rdg report only (alert) all year
001BOD, 5-day, 20 deg. CAVERAGE <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CAVERAGE <= 123 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 185 lb/d all year
001pHDAILY MN >= 6 SU Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001pHDAILY MN >= 7.5 SU Jun, Jul, Aug, Sep
001pHDAILY MX <= 9 SU Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001pHDAILY MX <= 9 SU Jun, Jul, Aug, Sep
001Bicarbonate ion- [as HCO3]Single Rdg report only (alert) all year
001Solids, total suspendedAVERAGE <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedAVERAGE <= 109 lb/d all year
001Solids, total suspendedWKLY AVG <= 164 lb/d all year
001Oil and grease [soxhlet extr.] tot.Single Rdg report only (alert) all year
001Nitrogen, ammonia, tot unionized [as N]AVERAGE report only (alert) Jun, Jul, Aug, Sep
001Nitrogen, ammonia, tot unionized [as N]DAILY MX report only (alert) Jun, Jul, Aug, Sep
001Nitrogen, Kjeldahl, total [as N]Single Rdg report only (alert) all year
001Nitrite + Nitrate total [as N]Single Rdg report only (alert) all year
001Phosphorus, total [as P]Single Rdg report only (alert) all year
001Phosphorus, dissolved reactive [drp as P]Single Rdg report only (alert) all year
001Hardness, total [as CaCO3]Single Rdg report only (alert) all year
001Copper, total [as Cu]AVERAGE <= 8.6 ug/L Jun, Jul, Aug, Sep
001Zinc, total recoverableAVERAGE report only (alert) Jun, Jul, Aug, Sep
001Zinc, total recoverableDAILY MX report only (alert) Jun, Jul, Aug, Sep
001Lead, total recoverableAVERAGE report only (alert) Jun, Jul, Aug, Sep
001Lead, total recoverableDAILY MX report only (alert) Jun, Jul, Aug, Sep
001E. coliSingle Rdg report only (alert) all year
001Solids, total dissolvedSingle Rdg report only (alert) all year
001Coliform, fecal generalSingle Rdg report only (alert) all year
001Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
001Coliform, fecal generalWK GEOMN <= 400 #/100mL all year
001FlowAVERAGE report only (alert) all year
001FlowDAILY MX report only (alert) all year
INFLBOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
INFLBOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
INFLBOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
INFLBOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
INFLSolids, total suspendedAVERAGE report only (alert) all year
INFLSolids, total suspendedMAXIMUM report only (alert) all year
INFLSolids, total suspendedAVERAGE report only (alert) all year
INFLSolids, total suspendedMAXIMUM report only (alert) all year
INFLFlowAVERAGE report only (alert) Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
INFLFlowAVERAGE report only (alert) Jun, Jul, Aug, Sep

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