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Grays Harbor County

Sewage treatment plant, Pacific Beach, Washington. NPDES permit WA0037095, in force until Aug 31, 2030. Last 12 months: no values over a limit, 1 required value missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form M3 monthly (21 values), outfall 001 form QQ quarterly (3 values), outfall INF form MM monthly (10 values), outfall 001 form AA yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
11 values over a limit, 1 required value missing, 1 of 39 reports late

Limits in force (48)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademaximumreport only (deg C) (alert, not enforceable)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec001
Temperature, water deg. centigrademonthly averagereport only (deg C) (alert, not enforceable)Jun–Sep001
Temperature, water deg. centigrademonthly averagereport only (deg C) (alert, not enforceable)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec001
Oxygen, dissolved [DO]daily minimum≥ 8 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 25 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 24 lb/dJun–Oct001
BOD, 5-day, 20 deg. Cmonthly average≤ 64 lb/dJan, Feb, Mar, Apr, May, Nov, Dec001
BOD, 5-day, 20 deg. Cweekly average≤ 30 lb/dJun–Oct001
BOD, 5-day, 20 deg. Cweekly average≤ 80 lb/dJan, Feb, Mar, Apr, May, Nov, Dec001
pHdaily minimum≥ 6.5 SUJun–Oct001
pHdaily minimum≥ 6.3 SUJan, Feb, Mar, Apr, May, Nov, Dec001
pHdaily maximum≤ 9 SUJun–Oct001
pHdaily maximum≤ 9 SUJan, Feb, Mar, Apr, May, Nov, Dec001
Solids, total suspendedmonthly average≤ 20 mg/Lall year001
Solids, total suspendedweekly average≤ 25 mg/Lall year001
Solids, total suspendedmonthly average≤ 24 lb/dJun–Oct001
Solids, total suspendedmonthly average≤ 64 lb/dJan, Feb, Mar, Apr, May, Nov, Dec001
Solids, total suspendedweekly average≤ 32 lb/dJun–Oct001
Solids, total suspendedweekly average≤ 80 lb/dJan, Feb, Mar, Apr, May, Nov, Dec001
Oil and grease, hexane extr methodsingle readingreport only (mg/L) (alert, not enforceable)all year001
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LJun–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 16 lb/dJan, Feb, Mar, Apr, May, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2.9 lb/dJun–Oct001
Hardness, total [as CaCO3]averagereport only (mg/L) (alert, not enforceable)all year001
Copper, total [as Cu]daily maximum≤ 7 ug/Lall year001
BOD, percent removal [total]monthly average minimum≥ 85 %all year001
E. coliaveragereport only (#/100mL) (alert, not enforceable)all year001
Enterococciaveragereport only (#/100mL) (alert, not enforceable)all year001
Solids, total dissolvedsingle readingreport only (mg/L) (alert, not enforceable)all year001
Coliform, fecal generalmonthly geometric mean≤ 25 #/100mLJun–Oct001
Coliform, fecal generalmonthly geometric mean≤ 41 #/100mLJan, Feb, Mar, Apr, May, Nov, Dec001
Coliform, fecal generalweekly geometric mean≤ 161 #/100mLJun–Oct001
Coliform, fecal generalweekly geometric mean≤ 340 #/100mLJan, Feb, Mar, Apr, May, Nov, Dec001
Flowmaximumreport only (MGD) (alert, not enforceable)all year001
Flowmonthly averagereport only (MGD) (alert, not enforceable)all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L) (alert, not enforceable)all yearINF
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L) (alert, not enforceable)all yearINF
BOD, 5-day, 20 deg. Cmaximumreport only (lb/d) (alert, not enforceable)all yearINF
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d) (alert, not enforceable)all yearINF
Solids, total suspendedmaximumreport only (mg/L) (alert, not enforceable)all yearINF
Solids, total suspendedmonthly averagereport only (mg/L) (alert, not enforceable)all yearINF
Solids, total suspendedmaximumreport only (lb/d) (alert, not enforceable)all yearINF
Solids, total suspendedmonthly averagereport only (lb/d) (alert, not enforceable)all yearINF
Flowmaximumreport only (MGD) (alert, not enforceable)all yearINF
Flowmonthly averagereport only (MGD) (alert, not enforceable)all yearINF

How strict are these limits?

Cited limits by parameter: Washington's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WA0037095 · MCP: https://passage-data.com/mcp