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City of Shelton

Sewage treatment plant, major discharger, Shelton, Washington. NPDES permit WA0023345 expired Mar 31, 2013; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form MM monthly (20 values), outfall INFL form MM monthly (6 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (66)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigradeaveragereport only (deg C) (alert, not enforceable)all year001
Temperature, water deg. centigradeaveragereport only (deg C) (alert, not enforceable)all year001
Temperature, water deg. centigrademaximumreport only (deg C) (alert, not enforceable)all year001
Temperature, water deg. centigrademaximumreport only (deg C) (alert, not enforceable)all year001
BOD, 5-day, 20 deg. Caverage≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Caverage≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Caverage≤ 330 lb/dall year001
BOD, 5-day, 20 deg. Caverage≤ 330 lb/dall year001
BOD, 5-day, 20 deg. Caverage≤ 330 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 495 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 495 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 495 lb/dall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedaverage≤ 30 mg/Lall year001
Solids, total suspendedaverage≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedaverage≤ 540 lb/dall year001
Solids, total suspendedaverage≤ 540 lb/dall year001
Solids, total suspendedaverage≤ 540 lb/dall year001
Solids, total suspendedweekly average≤ 810 lb/dall year001
Solids, total suspendedweekly average≤ 810 lb/dall year001
Solids, total suspendedweekly average≤ 810 lb/dall year001
Nitrogen, ammonia total [as N]averagereport only (mg/L) (alert, not enforceable)all year001
Nitrogen, ammonia total [as N]averagereport only (mg/L) (alert, not enforceable)all year001
Nitrogen, ammonia total [as N]maximumreport only (mg/L) (alert, not enforceable)all year001
Nitrogen, ammonia total [as N]maximumreport only (mg/L) (alert, not enforceable)all year001
Nitrogen, ammonia total [as N]averagereport only (lb/d) (alert, not enforceable)all year001
Nitrogen, ammonia total [as N]averagereport only (lb/d) (alert, not enforceable)all year001
Nitrogen, ammonia total [as N]averagereport only (lb/d) (alert, not enforceable)all year001
Nitrogen, ammonia total [as N]maximumreport only (lb/d) (alert, not enforceable)all year001
Nitrogen, ammonia total [as N]maximumreport only (lb/d) (alert, not enforceable)all year001
Nitrogen, ammonia total [as N]maximumreport only (lb/d) (alert, not enforceable)all year001
Nitrogen, nitrate total [as N]averagereport only (mg/L) (alert, not enforceable)all year001
Nitrogen, nitrate total [as N]averagereport only (mg/L) (alert, not enforceable)all year001
Nitrogen, nitrate total [as N]maximumreport only (mg/L) (alert, not enforceable)all year001
Nitrogen, nitrate total [as N]maximumreport only (mg/L) (alert, not enforceable)all year001
BOD, percent removal [total]monthly average minimum≥ 85 %all year001
BOD, percent removal [total]monthly average minimum≥ 85 %all year001
Coliform, fecal generalgeometric mean≤ 200 #/100mL (alert, not enforceable)all year001
Coliform, fecal generalweekly geometric mean≤ 400 #/100mL (alert, not enforceable)all year001
Flowaveragereport only (MGD) (alert, not enforceable)all year001
Flowaveragereport only (MGD) (alert, not enforceable)all year001
Flowmaximumreport only (MGD) (alert, not enforceable)all year001
Flowmaximumreport only (MGD) (alert, not enforceable)all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
BOD, 5-day, 20 deg. Caveragereport only (mg/L) (alert, not enforceable)all yearINFL
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L) (alert, not enforceable)all yearINFL
BOD, 5-day, 20 deg. Caveragereport only (lb/d) (alert, not enforceable)all yearINFL
BOD, 5-day, 20 deg. Cmaximumreport only (lb/d) (alert, not enforceable)all yearINFL
pHmaximumreport only (SU) (alert, not enforceable)all yearINFL
pHminimumreport only (SU) (alert, not enforceable)all yearINFL
Solids, total suspendedaveragereport only (mg/L) (alert, not enforceable)all yearINFL
Solids, total suspendedaveragereport only (mg/L) (alert, not enforceable)all yearINFL
Solids, total suspendedmaximumreport only (mg/L) (alert, not enforceable)all yearINFL
Solids, total suspendedmaximumreport only (mg/L) (alert, not enforceable)all yearINFL
Solids, total suspendedaveragereport only (lb/d) (alert, not enforceable)all yearINFL
Solids, total suspendedaveragereport only (lb/d) (alert, not enforceable)all yearINFL
Solids, total suspendedaveragereport only (lb/d) (alert, not enforceable)all yearINFL
Solids, total suspendedmaximumreport only (lb/d) (alert, not enforceable)all yearINFL
Solids, total suspendedmaximumreport only (lb/d) (alert, not enforceable)all yearINFL
Solids, total suspendedmaximumreport only (lb/d) (alert, not enforceable)all yearINFL

Cited limits by parameter: Washington's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WA0023345 · MCP: https://passage-data.com/mcp