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Sewage treatment plant, Woodland, Washington. NPDES permit WA0020401, in force until Sep 30, 2030. Last 12 months: no values over a limit, 88 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) (alert, not enforceable) | all year | 001 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) (alert, not enforceable) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly 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 | monthly average | ≤ 398 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 398 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 596 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 596 lb/d | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 474 lb/d | all year | 001 |
| Solids, total suspended | monthly average | ≤ 474 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 711 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 711 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Cyanide, weak acid, dissociable | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Arsenic, total [as As] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Beryllium, total [as Be] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Cadmium, total [as Cd] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Chromium, total [as Cr] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Copper, total [as Cu] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Lead, total [as Pb] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Thallium, total [as Tl] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Nickel, total [as Ni] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Silver, total [as Ag] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Zinc, total [as Zn] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Antimony, total [as Sb] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Selenium, total [as Se] | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| Phenolics, total | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| .delta.-BHC | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| Endosulfan sulfate | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| .beta.-Endosulfan | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| .alpha.-Endosulfan | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| Endrin aldehyde | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| PCB-1016 | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| 4,4'-DDT | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| 4,4'-DDD | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| 4,4'-DDE | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| Aldrin | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| .alpha.-BHC | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| .gamma.-BHC | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| Dieldrin | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| Endrin | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| Toxaphene | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| Heptachlor | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| Heptachlor epoxide | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| PCB-1221 | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| PCB-1232 | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| PCB-1242 | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| PCB-1248 | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| PCB-1254 | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| PCB-1260 | single reading | report only (ug/L) (alert, not enforceable) | all year | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 85 % | all year | 001 |
| .beta.-BHC | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| Chlordane | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| E. coli | maximum | report only (#/100mL) (alert, not enforceable) | all year | 001 |
| E. coli | monthly average | report only (#/100mL) (alert, not enforceable) | all year | 001 |
| Oil & grease, non-polar material | single reading | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Mercury, total [as Hg] | single reading | report only (ng/L) (alert, not enforceable) | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 400 #/100mL | all year | 001 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | 001 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| pH | single reading | report only (SU) (alert, not enforceable) | all year | BIO |
| Beryllium, total [as Be] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Cadmium, total [as Cd] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Chromium, total [as Cr] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Lead, total dry weight [as Pb] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Thallium, total [as Tl] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Molybdenum, total [as Mo] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Nickel, total [as Ni] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Silver, total [as Ag] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Zinc in bottom deposits [dry wgt] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Antimony, total [as Sb] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Selenium, total [as Se] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Arsenic total, dry weight, sludge | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Mercury, tot in bot deposits [dry wgt] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| Copper, sludge, total, dry weight [as Cu] | single reading | report only (mg/kg) (alert, not enforceable) | all year | BIO |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | all year | IN00 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) (alert, not enforceable) | all year | IN00 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | IN00 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | all year | IN00 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN00 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN00 |
| pH | single reading | report only (SU) (alert, not enforceable) | all year | IN00 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | all year | IN00 |
| Solids, total suspended | monthly average | report only (mg/L) (alert, not enforceable) | all year | IN00 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | all year | IN00 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | all year | IN00 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN00 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | all year | IN00 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | IN00 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | IN00 |
| Cyanide, weak acid, dissociable | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Arsenic, total [as As] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Beryllium, total [as Be] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Cadmium, total [as Cd] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Chromium, total [as Cr] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Copper, total [as Cu] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Lead, total [as Pb] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Thallium, total [as Tl] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Molybdenum, total [as Mo] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Nickel, total [as Ni] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Silver, total [as Ag] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Zinc, total [as Zn] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Antimony, total [as Sb] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Selenium, total [as Se] | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Phenolics, total | single reading | report only (ug/L) (alert, not enforceable) | all year | IN00 |
| Oil & grease, non-polar material | single reading | report only (mg/L) (alert, not enforceable) | all year | IN00 |
| Mercury, total [as Hg] | single reading | report only (ng/L) (alert, not enforceable) | all year | IN00 |
| Flow | maximum | report only (MGD) (alert, not enforceable) | all year | IN00 |
| Flow | monthly average | report only (MGD) (alert, not enforceable) | all year | IN00 |
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/WA0020401 · MCP: https://passage-data.com/mcp