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Sewage treatment plant, Nordland, Washington. NPDES permit WA0039829 expired Oct 31, 2019; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | average | ≤ 6.3 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | average | ≤ 6.3 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 9.4 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 9.4 lb/d | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | average | ≤ 6.3 lb/d | all year | 001 |
| Solids, total suspended | average | ≤ 6.3 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 9.4 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 9.4 lb/d | all year | 001 |
| Nitrogen, total [as N] | average | ≤ 10 mg/L | all year | 001 |
| Nitrogen, total [as N] | average | ≤ 10 mg/L | all year | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 85 % | all year | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 85 % | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 14 #/100mL | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 14 #/100mL | all year | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 43 #/100mL | all year | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 43 #/100mL | all year | 001 |
| Flow | average | report only (MGD) (alert, not enforceable) | all year | 001 |
| Flow | average | report only (MGD) (alert, not enforceable) | all year | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| BOD, 5-day, 20 deg. C | average | report only (mg/L) (alert, not enforceable) | all year | INF |
| BOD, 5-day, 20 deg. C | average | report only (mg/L) (alert, not enforceable) | all year | INF |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | all year | INF |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | all year | INF |
| BOD, 5-day, 20 deg. C | average | report only (lb/d) (alert, not enforceable) | all year | INF |
| BOD, 5-day, 20 deg. C | average | report only (lb/d) (alert, not enforceable) | all year | INF |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | INF |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | INF |
| Solids, total suspended | average | report only (mg/L) (alert, not enforceable) | all year | INF |
| Solids, total suspended | average | report only (mg/L) (alert, not enforceable) | all year | INF |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | all year | INF |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | all year | INF |
| Solids, total suspended | average | report only (lb/d) (alert, not enforceable) | all year | INF |
| Solids, total suspended | average | report only (lb/d) (alert, not enforceable) | all year | INF |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | all year | INF |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | all year | INF |
| Conductivity | average | report only (umho/cm) (alert, not enforceable) | all year | MW1 |
| Conductivity | average | report only (umho/cm) (alert, not enforceable) | all year | MW1 |
| pH | value | report only (SU) (alert, not enforceable) | all year | MW1 |
| pH | value | report only (SU) (alert, not enforceable) | all year | MW1 |
| Nitrogen, nitrate total [as N] | average | report only (mg/L) (alert, not enforceable) | all year | MW1 |
| Nitrogen, nitrate total [as N] | average | report only (mg/L) (alert, not enforceable) | all year | MW1 |
| Depth to water level ft below landsurface | average | report only (ft) (alert, not enforceable) | all year | MW1 |
| Depth to water level ft below landsurface | average | report only (ft) (alert, not enforceable) | all year | MW1 |
| Coliform, total general | average | report only (#/100mL) (alert, not enforceable) | all year | MW1 |
| Coliform, total general | average | report only (#/100mL) (alert, not enforceable) | all year | MW1 |
| Conductivity | average | report only (umho/cm) (alert, not enforceable) | all year | MW2 |
| Conductivity | average | report only (umho/cm) (alert, not enforceable) | all year | MW2 |
| pH | value | report only (SU) (alert, not enforceable) | all year | MW2 |
| pH | value | report only (SU) (alert, not enforceable) | all year | MW2 |
| Nitrogen, nitrate total [as N] | average | report only (mg/L) (alert, not enforceable) | all year | MW2 |
| Nitrogen, nitrate total [as N] | average | report only (mg/L) (alert, not enforceable) | all year | MW2 |
| Depth to water level ft below landsurface | average | report only (ft) (alert, not enforceable) | all year | MW2 |
| Depth to water level ft below landsurface | average | report only (ft) (alert, not enforceable) | all year | MW2 |
| Coliform, total general | average | report only (#/100mL) (alert, not enforceable) | all year | MW2 |
| Coliform, total general | average | report only (#/100mL) (alert, not enforceable) | all year | MW2 |
| Conductivity | average | report only (umho/cm) (alert, not enforceable) | all year | MW3 |
| Conductivity | average | report only (umho/cm) (alert, not enforceable) | all year | MW3 |
| pH | value | report only (SU) (alert, not enforceable) | all year | MW3 |
| pH | value | report only (SU) (alert, not enforceable) | all year | MW3 |
| Nitrogen, nitrate total [as N] | average | report only (mg/L) (alert, not enforceable) | all year | MW3 |
| Nitrogen, nitrate total [as N] | average | report only (mg/L) (alert, not enforceable) | all year | MW3 |
| Depth to water level ft below landsurface | average | report only (ft) (alert, not enforceable) | all year | MW3 |
| Depth to water level ft below landsurface | average | report only (ft) (alert, not enforceable) | all year | MW3 |
| Coliform, total general | average | report only (#/100mL) (alert, not enforceable) | all year | MW3 |
| Coliform, total general | average | report only (#/100mL) (alert, not enforceable) | all year | MW3 |
| Turbidity | average | report only (NTU) (alert, not enforceable) | all year | TAV |
| Turbidity | average | report only (NTU) (alert, not enforceable) | all year | TAV |
| Turbidity | daily maximum | report only (NTU) (alert, not enforceable) | all year | TDM |
| Turbidity | daily maximum | report only (NTU) (alert, not enforceable) | all year | TDM |
| Temperature, water deg. centigrade | average | report only (deg C) (alert, not enforceable) | Jul, Dec | TMP |
| Temperature, water deg. centigrade | average | report only (deg C) (alert, not enforceable) | Jul, Dec | TMP |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) (alert, not enforceable) | Jul, Dec | TMP |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) (alert, not enforceable) | Jul, Dec | TMP |
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/WA0039829 · MCP: https://passage-data.com/mcp