Chelan County PUD No. 1

NPDES permit WA0052175 · Minor POTW · administratively continued, expires 2024-05-31 · 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

1values over a limit
1required values missing, on 1 form(s)
2of 22 forms filed late

Last period with anything received: 2026-07-31. Most often over: Phosphorus, total [as P] (1).

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 (41)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]Single Rdg report only (alert) all year
001Oxygen, dissolved [DO]Single Rdg report only (alert) all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 41.3 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 41.3 lb/d all year
001pHMAXIMUM <= 9 SU all year
001pHMINIMUM >= 6 SU all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedWKLY AVG <= 41.3 lb/d all year
001Solids, total suspendedWKLY AVG <= 41.3 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]Single Rdg report only (alert) all year
001Nitrogen, ammonia total [as N]Single Rdg report only (alert) 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, 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]MAXIMUM report only (alert) Jan, Feb, Jun, Nov, Dec
001Phosphorus, total [as P]MO AVG report only (alert) Jan, Feb, Jun, Nov, Dec
001Hardness, total [as CaCO3]Single Rdg report only (alert) all year
001Hardness, total [as CaCO3]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 <= 200 #/100mL all year
001Coliform, fecal generalWK GEOMN <= 400 #/100mL all year
001FlowMAXIMUM 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
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. CMAXIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMO AVG report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMO AVG report only (alert) all year
IN1Solids, total suspendedMAXIMUM 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