Town of Naches

NPDES permit WA0022586 · Minor POTW · administratively continued, expires 2019-09-30 · EPA's file as of 2026-09-19

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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 2019-09-30 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

8values over a limit
88required values missing, on 10 form(s)
2of 26 forms filed late

Last period with anything received: 2026-07-31. Most often over: Oxygen, dissolved [DO] (8).

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 (109)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMAXIMUM report only all year
001Temperature, water deg. centigradeMINIMUM report only all year
001Temperature, water deg. centigradeMO AVG <= 22.84 deg C all year
001Oxygen, dissolved [DO]MAXIMUM report only all year
001Oxygen, dissolved [DO]MINIMUM report only all year
001Oxygen, dissolved [DO]MO AVG <= 5.59 mg/L all year
001BOD, 5-day, 20 deg. CMAXIMUM report only all year
001BOD, 5-day, 20 deg. CMINIMUM report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
001BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
001BOD, 5-day, 20 deg. CMINIMUM report only (alert) all year
001BOD, 5-day, 20 deg. CMINIMUM report only (alert) all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 45 lb/d all year
001BOD, 5-day, 20 deg. CMO TOTAL report only all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 67.5 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 67.5 lb/d all year
001pHMAXIMUM report only (alert) all year
001pHMAXIMUM report only (alert) all year
001pHMINIMUM report only (alert) all year
001pHMINIMUM report only (alert) all year
001Alkalinity, total [as CaCO3]Single Rdg report only (alert) all year
001Alkalinity, total [as CaCO3]Single Rdg report only (alert) all year
001Solids, total suspendedMAXIMUM report only all year
001Solids, total suspendedMINIMUM report only all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedMAXIMUM report only (alert) all year
001Solids, total suspendedMAXIMUM report only (alert) all year
001Solids, total suspendedMINIMUM report only (alert) all year
001Solids, total suspendedMINIMUM report only (alert) all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 45 lb/d all year
001Solids, total suspendedMO TOTAL report only all year
001Solids, total suspendedWKLY AVG <= 67.5 lb/d all year
001Solids, total suspendedWKLY AVG <= 67.5 lb/d all year
001Oil and grease, hexane extr methodSingle Rdg report only (alert) all year
001Oil and grease, hexane extr methodSingle Rdg report only (alert) all year
001Nitrogen, ammonia total [as N]MAXIMUM report only all year
001Nitrogen, ammonia total [as N]MINIMUM report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 2.14 mg/L all year
001Nitrogen, ammonia total [as N]MAXIMUM report only (alert) all year
001Nitrogen, ammonia total [as N]MAXIMUM report only (alert) all year
001Nitrogen, ammonia total [as N]MINIMUM report only (alert) all year
001Nitrogen, ammonia total [as N]MINIMUM report only (alert) all year
001Nitrogen, ammonia total [as N]MO AVG report only (alert) all year
001Nitrogen, ammonia total [as N]MO AVG report only (alert) all year
001Nitrogen, ammonia total [as N]MO TOTAL report only (alert) all year
001Nitrogen, ammonia total [as N]MO TOTAL report only (alert) all year
001Nitrogen, Kjeldahl, total [as N]Single Rdg report only (alert) all year
001Nitrogen, Kjeldahl, total [as N]Single Rdg report only (alert) all year
001Nitrite + Nitrate 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, total [as P]Single Rdg report only (alert) all year
001Hardness, total [as CaCO3]Single Rdg report only (alert) all year
001Hardness, total [as CaCO3]Single Rdg report only (alert) all year
001Copper, total [as Cu]Single Rdg report only (alert) all year
001Copper, total [as Cu]Single Rdg report only (alert) all year
001BOD, percent removal [total]MO AV MN >= 85 % all year
001Solids, total dissolvedSingle Rdg report only (alert) all year
001Solids, total dissolvedSingle Rdg report only (alert) all year
001Coliform, fecal generalMO GEOMN <= 100 #/100mL all year
001Coliform, fecal generalMO GEOMN <= 100 #/100mL all year
001Coliform, fecal generalWK GEOMN <= 200 #/100mL all year
001Coliform, fecal generalWK GEOMN <= 200 #/100mL all year
001FlowMAXIMUM report only (alert) all year
001FlowMINIMUM report only (alert) all year
001FlowMO AVG report only (alert) all year
001FlowMO TOTAL report only (alert) all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
IN1BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMINIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMINIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMO AVG report only (alert) all year
IN1BOD, 5-day, 20 deg. CMO AVG report only (alert) all year
IN1BOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
IN1BOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
IN1BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMINIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMINIMUM report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMINIMUM report only (alert) all year
IN1Solids, total suspendedMINIMUM report only (alert) all year
IN1Solids, total suspendedMO AVG report only (alert) all year
IN1Solids, total suspendedMO AVG report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMINIMUM report only (alert) all year
IN1Solids, total suspendedMINIMUM report only (alert) all year
IN1Solids, total suspendedMINIMUM report only (alert) all year
IN1FlowAVERAGE report only (alert) all year
IN1FlowAVERAGE report only (alert) all year
IN1FlowMAXIMUM report only (alert) all year
IN1FlowMAXIMUM report only (alert) all year
IN1FlowMINIMUM report only (alert) all year
IN1FlowMINIMUM report only (alert) all year
IN1FlowMO TOTAL report only (alert) all year
IN1FlowMO TOTAL report only (alert) 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