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Town of Endicott

Sewage treatment plant, Endicott, Washington. NPDES permit WA0023981 expired Jun 30, 2015; its limits still apply. Last 12 months: over a limit 4 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form MM monthly (10 values), outfall IN1 form MM monthly (10 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

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

Period endingParameterReportedLimitOver by
November 2025Coliform, fecal general, weekly average1600≤ 200 #/100mL700%
November 2025Nitrogen, ammonia total [as N], average3.16293≤ 1.32 mg/L140%
March 2026Coliform, fecal general, monthly average231.4≤ 100 #/100mL131%
March 2026Coliform, fecal general, weekly average231.4≤ 200 #/100mL16%

Limits in force (53)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 38 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 56 lb/dall 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≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 45 mg/Lall year001
Solids, total suspendedweekly average≤ 65 mg/Lall year001
Solids, total suspendedweekly average≤ 65 mg/Lall year001
Solids, total suspendedmonthly average≤ 56 lb/dall year001
Solids, total suspendedmonthly average≤ 56 lb/dall year001
Solids, total suspendedmonthly average≤ 56 lb/dall year001
Solids, total suspendedweekly average≤ 81 lb/dall year001
Solids, total suspendedweekly average≤ 81 lb/dall year001
Solids, total suspendedweekly average≤ 81 lb/dall year001
Nitrogen, ammonia total [as N]average≤ 1.32 mg/Lall year001
Nitrogen, ammonia total [as N]average≤ 1.32 mg/Lall year001
Nitrogen, ammonia total [as N]average≤ 1.7 lb/dall year001
Nitrogen, ammonia total [as N]average≤ 1.7 lb/dall year001
Nitrogen, ammonia total [as N]average≤ 1.7 lb/dall year001
Chlorine, total residualaverage≤ .5 mg/Lall year001
Chlorine, total residualmaximumreport only (mg/L) (alert, not enforceable)all year001
Coliform, fecal generalmonthly average≤ 100 #/100mLall year001
Coliform, fecal generalmonthly average≤ 100 #/100mLall year001
Coliform, fecal generalweekly average≤ 200 #/100mLall year001
Coliform, fecal generalweekly average≤ 200 #/100mLall year001
BOD, 5-day, 20 deg. Caveragereport only (mg/L) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Caveragereport only (mg/L) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Caveragereport only (lb/d) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Caveragereport only (lb/d) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Caveragereport only (lb/d) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Cmaximumreport only (lb/d) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Cmaximumreport only (lb/d) (alert, not enforceable)all yearIN1
BOD, 5-day, 20 deg. Cmaximumreport only (lb/d) (alert, not enforceable)all yearIN1
Solids, total suspendedaveragereport only (mg/L) (alert, not enforceable)all yearIN1
Solids, total suspendedaveragereport only (mg/L) (alert, not enforceable)all yearIN1
Solids, total suspendedmaximumreport only (mg/L) (alert, not enforceable)all yearIN1
Solids, total suspendedmaximumreport only (mg/L) (alert, not enforceable)all yearIN1
Solids, total suspendedaveragereport only (lb/d) (alert, not enforceable)all yearIN1
Solids, total suspendedaveragereport only (lb/d) (alert, not enforceable)all yearIN1
Solids, total suspendedaveragereport only (lb/d) (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 suspendedmaximumreport only (lb/d) (alert, not enforceable)all yearIN1
Flowaveragereport only (gal/d) (alert, not enforceable)all yearIN1
Flowaveragereport only (gal/d) (alert, not enforceable)all yearIN1
Flowmaximumreport only (gal/d) (alert, not enforceable)all yearIN1
Flowmaximumreport only (gal/d) (alert, not enforceable)all yearIN1

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/WA0023981 · MCP: https://passage-data.com/mcp