City of Tonasket

NPDES permit WA0052337 · Minor POTW · effective, expires 2031-04-30 · 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

6values over a limit
0required values missing, on 0 form(s)
0of 29 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, percent removal [total] (3), Solids, suspended percent removal (3).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among WA permits in EPA's filings — check your permit).

Limits in force (61)

OutfallParameterStatisticLimitMonths
004Nitrogen, Kjeldahl, total [as N]Single Rdg report only (alert) all year
004Nitrite + Nitrate total [as N]Single Rdg report only (alert) all year
004Phosphorus, total [as P]Single Rdg report only (alert) all year
004E. coliSingle Rdg report only (alert) all year
004Oil & grease, non-polar materialSingle Rdg report only (alert) all year
004Solids, total dissolvedSingle Rdg report only (alert) all year
EFFLTemperature, water deg. centigradeMAXIMUM report only (alert) all year
EFFLTemperature, water deg. centigradeMO AVG report only (alert) all year
EFFLOxygen, dissolved [DO]Single Rdg report only (alert) all year
EFFLBOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
EFFLBOD, 5-day, 20 deg. CWKLY AVG <= 153.9 lb/d all year
EFFLBOD, 5-day, 20 deg. CWKLY AVG <= 153.9 lb/d all year
EFFLpHDAILY MN >= 6 SU all year
EFFLpHDAILY MX <= 9 SU all year
EFFLSolids, total suspendedWKLY AVG <= 45 mg/L all year
EFFLSolids, total suspendedWKLY AVG <= 153.9 lb/d all year
EFFLSolids, total suspendedWKLY AVG <= 153.9 lb/d all year
EFFLNitrogen, ammonia total [as N]MAXIMUM report only (alert) all year
EFFLNitrogen, ammonia total [as N]MAXIMUM report only (alert) all year
EFFLBOD, percent removal [total]MO AVG <= 85 % all year
EFFLColiform, fecal generalMO GEOMN <= 200 #/100mL all year
EFFLColiform, fecal generalWK GEOMN <= 400 #/100mL all year
EFFLFlowDAILY MX report only (alert) all year
EFFLFlowMO AVG report only (alert) all year
EFFLFlowMO TOTAL report only (alert) all year
EFFLSolids, suspended percent removalMO AVG <= 85 % all year
IN1BOD, 5-day, 20 deg. CMAXIMUM 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. CMAXIMUM report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMO AVG report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
MW1Temperature, water deg. centigradeSingle Rdg report only (alert) all year
MW1ConductivitySingle Rdg report only (alert) all year
MW1pHSingle Rdg report only (alert) all year
MW1Nitrogen, nitrate total [as N]Single Rdg report only (alert) all year
MW1Nitrogen, Kjeldahl, total [as N]Single Rdg report only (alert) all year
MW1Phosphorus, total [as P]Single Rdg report only (alert) all year
MW1Iron, ferrous - presentSingle Rdg report only (alert) all year
MW1Solids, total dissolvedSingle Rdg report only (alert) all year
MW1Depth to water level ft below landsurfaceSingle Rdg report only (alert) all year
MW3Temperature, water deg. centigradeSingle Rdg report only (alert) all year
MW3ConductivitySingle Rdg report only (alert) all year
MW3pHSingle Rdg report only (alert) all year
MW3Nitrogen, nitrate total [as N]Single Rdg report only (alert) all year
MW3Nitrogen, Kjeldahl, total [as N]Single Rdg report only (alert) all year
MW3Phosphorus, total [as P]Single Rdg report only (alert) all year
MW3Iron, ferrous - presentSingle Rdg report only (alert) all year
MW3Solids, total dissolvedSingle Rdg report only (alert) all year
MW3Depth to water level ft below landsurfaceSingle Rdg report only (alert) all year
MW6Temperature, water deg. centigradeSingle Rdg report only (alert) all year
MW6ConductivitySingle Rdg report only (alert) all year
MW6pHSingle Rdg report only (alert) all year
MW6Nitrogen, nitrate total [as N]Single Rdg report only (alert) all year
MW6Nitrogen, Kjeldahl, total [as N]Single Rdg report only (alert) all year
MW6Phosphorus, total [as P]Single Rdg report only (alert) all year
MW6Iron, ferrous - presentSingle Rdg report only (alert) all year
MW6Solids, total dissolvedSingle Rdg report only (alert) all year
MW6Depth to water level ft below landsurfaceSingle Rdg 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