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Pinedale, Town of

Sewage treatment plant, Pinedale, Wyoming. NPDES permit WY0020656 expired Sep 30, 2026; its limits still apply. Last 12 months: over a limit 5 times (last August 2026), 4 required values missing, 4 of 21 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form MQ quarterly (50 values), outfall 001 form QQ quarterly (2 values), outfall DMP1 form QQ quarterly (3 values), outfall 001 form MA yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
5 values over a limit, 6 required values missing, 6 of 21 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average17.75 mg/L≤ 15.92 mg/L11%
April 2026Solids, suspended percent removal, monthly average minimum62.26 %≥ 65 %8%
June 2026Solids, suspended percent removal, monthly average minimum60.95 %≥ 65 %12%
July 2026Solids, suspended percent removal, monthly average minimum41.1 %≥ 65 %68%
August 2026Solids, suspended percent removal, monthly average minimum57.76 %≥ 65 %21%

Limits in force (65)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
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. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 90 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 90 mg/Lall year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 100 mg/Lall year001
Solids, total suspendedmonthly average≤ 100 mg/Lall year001
Solids, total suspendedweekly average≤ 150 mg/Lall year001
Solids, total suspendedweekly average≤ 150 mg/Lall year001
Solids, total suspendeddaily maximum≤ 300 mg/Lall year001
Solids, total suspendeddaily maximum≤ 300 mg/Lall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Solids, total suspendedweekly averagereport only (mg/L)all year001
Solids, total suspendedweekly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 15.92 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 15.92 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 31.6 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 31.6 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 30 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 30 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 31.6 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 31.6 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Durationmonthly totalreport only (d)all year001
Durationmonthly totalreport only (d)all year001
Chlorine, total residualdaily maximum≤ .03 mg/Lall year001
Chlorine, total residualdaily maximum≤ .03 mg/Lall year001
Chlorine, total residualmonthly average≤ .02 mg/Lall year001
Chlorine, total residualmonthly average≤ .02 mg/Lall year001
E. colimonthly geometric mean≤ 188 #/100mLMay–Oct001
E. colidaily maximum≤ 944 #/100mLJan, Feb, Mar, Apr, Nov, Dec001
E. colidaily maximum≤ 944 #/100mLMay–Oct001
E. colimonthly geometric mean≤ 446 #/100mLJan, Feb, Mar, Apr, Nov, Dec001
Solids, total dissolveddaily maximum≤ 500 mg/Lall year001
Solids, total dissolveddaily maximum≤ 500 mg/Lall year001
Flowdaily maximum≤ 1.5 MGDall year001
Flowdaily maximum≤ 1.5 MGDall year001
Flowmonthly averagereport only (MGD)all year001
Flowmonthly averagereport only (MGD)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 65 %all year001
BOD, 5-day, percent removalmonthly average minimum≥ 65 %all year001
Solids, suspended percent removalmonthly average minimum≥ 65 %all year001
Solids, suspended percent removalmonthly average minimum≥ 65 %all year001
Produced water, oil and greasedaily maximumreport only (mg/L)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all yearDMP1
pHinstantaneous minimumreport only (SU)all yearDMP1
pHinstantaneous maximumreport only (SU)all yearDMP1

How strict are these limits?

Cited limits by parameter: Wyoming'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/WY0020656 · MCP: https://passage-data.com/mcp