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Sewage treatment plant, Rosalia, Washington. NPDES permit WA0044687 expired Feb 28, 2021; its limits still apply. Last 12 months: over a limit 4 times (last February 2026), 22 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 8.925 | ≤ 8.2 mg/L | 9% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 11.1 | ≤ 8.2 mg/L | 35% |
| February 2026 | Solids, total suspended, monthly average | 53 | ≤ 45 mg/L | 18% |
| February 2026 | Solids, total suspended, monthly average | 55.3 | ≤ 48 lb/d | 15% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Chlorine, total residual | weekly average | ≤ 750 ug/L | Jan, Feb, Mar, Dec | 0000 |
| Chlorine, total residual | weekly average | ≤ 750 ug/L | Jan, Feb, Mar, Dec | 0000 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 45 mg/L | Jan, Feb, Mar, Dec | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 45 mg/L | Jan, Feb, Mar, Dec | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 65 mg/L | Jan, Feb, Mar, Dec | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 65 mg/L | Jan, Feb, Mar, Dec | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 48 lb/d | Jan, Feb, Mar, Dec | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 48 lb/d | Jan, Feb, Mar, Dec | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 69.4 lb/d | Jan, Feb, Mar, Dec | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 69.4 lb/d | Jan, Feb, Mar, Dec | 001 |
| pH | daily minimum | ≥ 6.5 SU | Jan, Feb, Mar, Dec | 001 |
| pH | daily minimum | ≥ 6.5 SU | Jan, Feb, Mar, Dec | 001 |
| pH | daily maximum | ≤ 8.5 SU | Jan, Feb, Mar, Dec | 001 |
| pH | daily maximum | ≤ 8.5 SU | Jan, Feb, Mar, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 45 mg/L | Jan, Feb, Mar, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 45 mg/L | Jan, Feb, Mar, Dec | 001 |
| Solids, total suspended | weekly average | ≤ 65 mg/L | Jan, Feb, Mar, Dec | 001 |
| Solids, total suspended | weekly average | ≤ 65 mg/L | Jan, Feb, Mar, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 48 lb/d | Jan, Feb, Mar, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 48 lb/d | Jan, Feb, Mar, Dec | 001 |
| Solids, total suspended | weekly average | ≤ 69.4 lb/d | Jan, Feb, Mar, Dec | 001 |
| Solids, total suspended | weekly average | ≤ 69.4 lb/d | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.2 mg/L | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.2 mg/L | Jan, Feb, Mar, Dec | 001 |
| Chlorine, total residual | monthly average | ≤ 500 ug/L | Jan, Feb, Mar, Dec | 001 |
| Chlorine, total residual | monthly average | ≤ 500 ug/L | Jan, Feb, Mar, Dec | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 65 % | Jan, Feb, Mar, Dec | 001 |
| BOD, percent removal [total] | monthly average minimum | ≥ 65 % | Jan, Feb, Mar, Dec | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 100 #/100mL | Jan, Feb, Mar, Dec | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 100 #/100mL | Jan, Feb, Mar, Dec | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 200 #/100mL | Jan, Feb, Mar, Dec | 001 |
| Coliform, fecal general | weekly geometric mean | ≤ 200 #/100mL | Jan, Feb, Mar, Dec | 001 |
| Flow | monthly average | report only (gal/d) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Flow | monthly average | report only (gal/d) (alert, not enforceable) | Jan, Feb, Mar, Dec | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 65 % | Jan, Feb, Mar, Dec | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 65 % | Jan, Feb, Mar, Dec | 001 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | Apr–Nov | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (mg/L) (alert, not enforceable) | Apr–Nov | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) (alert, not enforceable) | Apr–Nov | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) (alert, not enforceable) | Apr–Nov | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | Apr–Nov | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | Apr–Nov | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| BOD, 5-day, 20 deg. C | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | Apr–Nov | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | Apr–Nov | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| pH | maximum | report only (SU) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| pH | maximum | report only (SU) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| pH | maximum | report only (SU) (alert, not enforceable) | Apr–Nov | IN1 |
| pH | maximum | report only (SU) (alert, not enforceable) | Apr–Nov | IN1 |
| pH | minimum | report only (SU) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| pH | minimum | report only (SU) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| pH | minimum | report only (SU) (alert, not enforceable) | Apr–Nov | IN1 |
| pH | minimum | report only (SU) (alert, not enforceable) | Apr–Nov | IN1 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | Apr–Nov | IN1 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | Apr–Nov | IN1 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| Solids, total suspended | maximum | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| Solids, total suspended | monthly average | report only (mg/L) (alert, not enforceable) | Apr–Nov | IN1 |
| Solids, total suspended | monthly average | report only (mg/L) (alert, not enforceable) | Apr–Nov | IN1 |
| Solids, total suspended | monthly average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| Solids, total suspended | monthly average | report only (mg/L) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | Apr–Nov | IN1 |
| Solids, total suspended | maximum | report only (lb/d) (alert, not enforceable) | Apr–Nov | IN1 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | Jan, Feb, Mar, Dec | IN1 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | Apr–Nov | IN1 |
| Solids, total suspended | monthly average | report only (lb/d) (alert, not enforceable) | Apr–Nov | IN1 |
| Flow | maximum | report only (MGD) | all year | IN1 |
| Flow | monthly average | report only (MGD) | all year | IN1 |
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/WA0044687 · MCP: https://passage-data.com/mcp