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City of North Bonneville

Sewage treatment plant, North Bonneville, Washington. NPDES permit WA0023388, in force until Jun 30, 2029. Last 12 months: no values over a limit, 49 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form MM monthly (17 values), outfall INF form MM monthly (8 values), outfall 001 form AA yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (35)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C) (alert, not enforceable)all year001
Oxygen, dissolved [DO]single readingreport only (mg/L) (alert, not enforceable)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 48 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 72 lb/dall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 48 lb/dall year001
Solids, total suspendedweekly average≤ 72 lb/dall year001
Nitrogen, ammonia total [as N]single readingreport only (mg/L) (alert, not enforceable)all year001
Nitrogen, Kjeldahl, total [as N]single readingreport only (mg/L) (alert, not enforceable)all year001
Nitrite + Nitrate total [as N]single readingreport only (mg/L) (alert, not enforceable)all year001
Phosphorus, total [as P]single readingreport only (mg/L) (alert, not enforceable)all year001
Hardness, total [as CaCO3]single readingreport only (mg/L) (alert, not enforceable)all year001
BOD, percent removal [total]monthly average minimum≥ 85 %all year001
E. colisingle readingreport only (#/100mL) (alert, not enforceable)all year001
Oil & grease, non-polar materialsingle readingreport only (mg/L) (alert, not enforceable)all year001
Net rate of additionof heatmonthly average≤ 1900 mkcal/dayJun–Oct001
Solids, total dissolvedsingle readingreport only (mg/L) (alert, not enforceable)all year001
Coliform, fecal generalsingle readingreport only (#/100mL) (alert, not enforceable)all year001
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year001
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year001
Flowmonthly averagereport only (MGD) (alert, not enforceable)all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L) (alert, not enforceable)all yearINF
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L) (alert, not enforceable)all yearINF
BOD, 5-day, 20 deg. Cmonthly average≤ 320 lb/dall yearINF
BOD, 5-day, 20 deg. Cweekly averagereport only (lb/d) (alert, not enforceable)all yearINF
Solids, total suspendedmonthly averagereport only (mg/L) (alert, not enforceable)all yearINF
Solids, total suspendedweekly averagereport only (mg/L) (alert, not enforceable)all yearINF
Solids, total suspendedmonthly average≤ 320 lb/dall yearINF
Solids, total suspendedweekly averagereport only (lb/d) (alert, not enforceable)all yearINF

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WA0023388 · MCP: https://passage-data.com/mcp