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City of North Bend

Sewage treatment plant, major discharger, North Bend, Washington. NPDES permit WA0029351 expired Jan 31, 2024; its limits still apply. Last 12 months: over a limit once (last December 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form 05 monthly (28 values), outfall IN1 form MM monthly (10 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
December 2025Solids, total suspended, weekly average976.84≤ 968 lb/d1%

Limits in force (88)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademaximumreport only (deg C) (alert, not enforceable)all year001
Temperature, water deg. centigrademaximumreport only (deg C) (alert, not enforceable)all 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≤ 646 lb/dJan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
Solids, total suspendedaverage≤ 646 lb/dJan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
Solids, total suspendedaverage≤ 350 lb/dAug–Oct001
Solids, total suspendedaverage≤ 350 lb/dAug–Oct001
Solids, total suspendedweekly average≤ 968 lb/dJan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
Solids, total suspendedweekly average≤ 968 lb/dJan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
Solids, total suspendedweekly average≤ 525 lb/dAug–Oct001
Solids, total suspendedweekly average≤ 525 lb/dAug–Oct001
Nitrogen, ammonia total [as N]averagereport only (mg/L) (alert, not enforceable)Aug–Oct001
Nitrogen, ammonia total [as N]averagereport only (mg/L) (alert, not enforceable)Aug–Oct001
Nitrogen, ammonia total [as N]averagereport only (mg/L) (alert, not enforceable)Jan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
Nitrogen, ammonia total [as N]averagereport only (mg/L) (alert, not enforceable)Jan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
Nitrogen, ammonia total [as N]maximumreport only (mg/L) (alert, not enforceable)Aug–Oct001
Nitrogen, ammonia total [as N]maximumreport only (mg/L) (alert, not enforceable)Aug–Oct001
Nitrogen, ammonia total [as N]maximumreport only (mg/L) (alert, not enforceable)Jan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
Nitrogen, ammonia total [as N]maximumreport only (mg/L) (alert, not enforceable)Jan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
Nitrogen, ammonia total [as N]averagereport only (lb/d) (alert, not enforceable)Aug–Oct001
Nitrogen, ammonia total [as N]averagereport only (lb/d) (alert, not enforceable)Aug–Oct001
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d) (alert, not enforceable)Aug–Oct001
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d) (alert, not enforceable)Aug–Oct001
Nitrogen, Kjeldahl, total [as N]averagereport only (mg/L) (alert, not enforceable)all year001
Nitrogen, Kjeldahl, total [as N]averagereport only (mg/L) (alert, not enforceable)all year001
Nitrite + Nitrate total [as N]averagereport only (mg/L) (alert, not enforceable)all year001
Nitrite + Nitrate total [as N]averagereport only (mg/L) (alert, not enforceable)all year001
Phosphorus, total [as P]averagereport only (mg/L) (alert, not enforceable)all year001
Phosphorus, total [as P]averagereport only (mg/L) (alert, not enforceable)all year001
Phosphorus, dissolved reactive [drp as P]averagereport only (mg/L) (alert, not enforceable)all year001
Phosphorus, dissolved reactive [drp as P]averagereport only (mg/L) (alert, not enforceable)all year001
Phosphorus, dissolved reactive [drp as P]maximumreport only (mg/L) (alert, not enforceable)all year001
Phosphorus, dissolved reactive [drp as P]maximumreport only (mg/L) (alert, not enforceable)all year001
Phosphorus, dissolved reactive [drp as P]averagereport only (lb/d) (alert, not enforceable)all year001
Phosphorus, dissolved reactive [drp as P]averagereport only (lb/d) (alert, not enforceable)all year001
Phosphorus, dissolved reactive [drp as P]maximumreport only (lb/d) (alert, not enforceable)all year001
Phosphorus, dissolved reactive [drp as P]maximumreport only (lb/d) (alert, not enforceable)all year001
pH, maximumdaily maximum≤ 9 SUall year001
pH, maximumdaily maximum≤ 9 SUall year001
pH, minimumdaily minimum≥ 6.7 SUall year001
pH, minimumdaily minimum≥ 6.7 SUall year001
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year001
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year001
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year001
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall 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
BOD, carbonaceous [5 day, 20 C]average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]average≤ 538 lb/dJan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]average≤ 538 lb/dJan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]averagereport only (lb/d) (alert, not enforceable)Aug–Oct001
BOD, carbonaceous [5 day, 20 C]averagereport only (lb/d) (alert, not enforceable)Aug–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 861 lb/dJan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 861 lb/dJan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]maximumreport only (lb/d) (alert, not enforceable)Aug–Oct001
BOD, carbonaceous [5 day, 20 C]maximumreport only (lb/d) (alert, not enforceable)Aug–Oct001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 85 %all year001
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 85 %all year001
BOD, 5-day, 20 deg. Caveragereport only (mg/L) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Caveragereport only (mg/L) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Caveragereport only (lb/d) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Caveragereport only (lb/d) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Cmaximumreport only (lb/d) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Cmaximumreport only (lb/d) (alert, not enforceable)all yearIN1
Solids, total suspendedaveragereport only (mg/L) (alert, not enforceable)all yearIN1
Solids, total suspendedaveragereport only (mg/L) (alert, not enforceable)all yearIN1
Solids, total suspendedmaximumreport only (mg/L) (alert, not enforceable)all yearIN1
Solids, total suspendedmaximumreport only (mg/L) (alert, not enforceable)all yearIN1
Solids, total suspendedaveragereport only (lb/d) (alert, not enforceable)all yearIN1
Solids, total suspendedaveragereport only (lb/d) (alert, not enforceable)all yearIN1
Solids, total suspendedmaximumreport only (lb/d) (alert, not enforceable)all yearIN1
Solids, total suspendedmaximumreport only (lb/d) (alert, not enforceable)all yearIN1
BOD, carbonaceous [5 day, 20 C]averagereport only (mg/L) (alert, not enforceable)all yearIN1
BOD, carbonaceous [5 day, 20 C]averagereport only (mg/L) (alert, not enforceable)all yearIN1
BOD, carbonaceous [5 day, 20 C]maximumreport only (mg/L) (alert, not enforceable)all yearIN1
BOD, carbonaceous [5 day, 20 C]maximumreport only (mg/L) (alert, not enforceable)all yearIN1

How strict are these limits?

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/WA0029351 · MCP: https://passage-data.com/mcp