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Waitsburg City of

Sewage treatment plant, Waitsburg, Washington. NPDES permit WA0045551 expired Jun 30, 2019; its limits still apply. Last 12 months: over a limit 3 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form MM monthly (20 values), outfall 002 form QQ quarterly (2 values), outfall IN1 form MM monthly (12 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 2 required values missing, 3 of 28 reports late

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

Period endingParameterReportedLimitOver by
March 2026Coliform, fecal general, weekly geometric mean296≤ 200 #/100mL48%
March 2026Solids, suspended percent removal, monthly average minimum81.9≥ 85 %21%
September 2026Solids, total suspended, monthly average> 15.6≤ 15 mg/L—

Limits in force (82)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]minimumreport only (mg/L) (alert, not enforceable)all year001
Oxygen, dissolved [DO]minimumreport only (mg/L) (alert, not enforceable)all year001
Oxygen, dissolved [DO]monthly averagereport only (mg/L) (alert, not enforceable)all year001
Oxygen, dissolved [DO]monthly averagereport only (mg/L) (alert, not enforceable)all year001
pHdaily minimum≥ 6 SUall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 15 mg/Lall year001
Solids, total suspendedmonthly average≤ 15 mg/Lall year001
Solids, total suspendedweekly average≤ 20 mg/Lall year001
Solids, total suspendedweekly average≤ 20 mg/Lall year001
Solids, total suspendedmonthly average≤ 24.6 lb/dJan, Feb, Mar, Apr, May, Dec001
Solids, total suspendedmonthly average≤ 24.6 lb/dJan, Feb, Mar, Apr, May, Dec001
Solids, total suspendedmonthly average≤ 16.9 lb/dJun–Nov001
Solids, total suspendedmonthly average≤ 16.9 lb/dJun–Nov001
Solids, total suspendedweekly average≤ 32.9 lb/dJan, Feb, Mar, Apr, May, Dec001
Solids, total suspendedweekly average≤ 32.9 lb/dJan, Feb, Mar, Apr, May, Dec001
Solids, total suspendedweekly average≤ 22.5 lb/dJun–Nov001
Solids, total suspendedweekly average≤ 22.5 lb/dJun–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 7 mg/LJan, Feb, Mar, Apr, May, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 7 mg/LJan, Feb, Mar, Apr, May, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 5.8 mg/LJun–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 5.8 mg/LJun–Nov001
Nitrogen, nitrate total [as N]maximumreport only (mg/L) (alert, not enforceable)all year001
Nitrogen, nitrate total [as N]maximumreport only (mg/L) (alert, not enforceable)all year001
Nitrogen, Kjeldahl, total [as N]maximumreport only (mg/L) (alert, not enforceable)all year001
Nitrogen, Kjeldahl, total [as N]maximumreport only (mg/L) (alert, not enforceable)all year001
Phosphorus, total [as P]maximumreport only (mg/L) (alert, not enforceable)all year001
Phosphorus, total [as P]maximumreport only (mg/L) (alert, not enforceable)all year001
Coliform, fecal generalmonthly geometric mean≤ 100 #/100mLall year001
Coliform, fecal generalmonthly geometric mean≤ 100 #/100mLall year001
Coliform, fecal generalweekly geometric mean≤ 200 #/100mLall year001
Coliform, fecal generalweekly geometric mean≤ 200 #/100mLall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 20 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 20 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 24.6 lb/dJan, Feb, Mar, Apr, May, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 24.6 lb/dJan, Feb, Mar, Apr, May, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 16.9 lb/dJun–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 16.9 lb/dJun–Nov001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 32.9 lb/dJan, Feb, Mar, Apr, May, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 32.9 lb/dJan, Feb, Mar, Apr, May, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 22.5 lb/dJun–Nov001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 22.5 lb/dJun–Nov001
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
Nitrogen, ammonia total [as N]single readingreport only (mg/L) (alert, not enforceable)all year002
Nitrogen, ammonia total [as N]single readingreport only (mg/L) (alert, not enforceable)all year002
Nitrite + Nitrate total [as N]single readingreport only (mg/L) (alert, not enforceable)all year002
Nitrite + Nitrate total [as N]single readingreport only (mg/L) (alert, not enforceable)all year002
Solids, total suspendedmaximumreport only (mg/L) (alert, not enforceable)all yearIN1
Solids, total suspendedmaximumreport only (mg/L) (alert, not enforceable)all yearIN1
Solids, total suspendedmonthly averagereport only (mg/L) (alert, not enforceable)all yearIN1
Solids, total suspendedmonthly averagereport only (mg/L) (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
Solids, total suspendedmonthly averagereport only (lb/d) (alert, not enforceable)all yearIN1
Solids, total suspendedmonthly averagereport only (lb/d) (alert, not enforceable)all yearIN1
Nitrogen, ammonia total [as N]maximumreport only (mg/L) (alert, not enforceable)all yearIN1
Nitrogen, ammonia total [as N]maximumreport only (mg/L) (alert, not enforceable)all yearIN1
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L) (alert, not enforceable)all yearIN1
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L) (alert, not enforceable)all yearIN1
Flowmaximumreport only (gal/d) (alert, not enforceable)Jan, Feb, Mar, Apr, Nov, DecIN1
Flowmaximumreport only (gal/d) (alert, not enforceable)Jan, Feb, Mar, Apr, Nov, DecIN1
Flowmaximumreport only (gal/d) (alert, not enforceable)May–OctIN1
Flowmaximumreport only (gal/d) (alert, not enforceable)May–OctIN1
Flowmonthly averagereport only (gal/d) (alert, not enforceable)Jan, Feb, Mar, Apr, Nov, DecIN1
Flowmonthly averagereport only (gal/d) (alert, not enforceable)Jan, Feb, Mar, Apr, Nov, DecIN1
Flowmonthly averagereport only (gal/d) (alert, not enforceable)May–OctIN1
Flowmonthly averagereport only (gal/d) (alert, not enforceable)May–OctIN1
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
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L) (alert, not enforceable)all yearIN1
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L) (alert, not enforceable)all yearIN1
BOD, carbonaceous [5 day, 20 C]maximumreport only (lb/d) (alert, not enforceable)all yearIN1
BOD, carbonaceous [5 day, 20 C]maximumreport only (lb/d) (alert, not enforceable)all yearIN1
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d) (alert, not enforceable)all yearIN1
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d) (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/WA0045551 · MCP: https://passage-data.com/mcp