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Alpine, Town of

Sewage treatment plant, (Unknown City), Wyoming. NPDES permit WY0035611, in force until Jun 30, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form MQ quarterly (48 values), form QQ quarterly (1 value), form MA yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 24 required values missing, 9 of 17 reports late

Limits in force (57)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily averagereport only (deg C)all year
Temperature, water deg. centigradedaily averagereport only (deg C)all year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 9 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Durationmonthly totalreport only (d)all year
Durationmonthly totalreport only (d)all year
Chlorine, total residualdaily maximum≤ 3.8 mg/Lall year
Chlorine, total residualdaily maximum≤ 3.8 mg/Lall year
E. colimonthly geometric mean≤ 630 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
E. colimonthly geometric mean≤ 630 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
E. colimonthly geometric mean≤ 126 #/100mLMay–Sep
E. colimonthly geometric mean≤ 126 #/100mLMay–Sep
E. colidaily maximum≤ 630 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
E. colidaily maximum≤ 630 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
E. colidaily maximum≤ 236 #/100mLMay–Sep
E. colidaily maximum≤ 236 #/100mLMay–Sep
Nitrogen, Ammonia Totaldaily maximumreport only (mg/L)all year
Solids, total dissolveddaily maximumreport only (mg/L)all year
Flowmonthly average≤ .4 MGDall year
Flowmonthly average≤ .4 MGDall year
Flowdaily maximumreport only (MGD)all year
Flowdaily maximumreport only (MGD)all year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Produced water, oil and greasedaily maximum≤ 10 mg/Lall year
Produced water, oil and greasedaily maximum≤ 10 mg/Lall year

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/WY0035611 · MCP: https://passage-data.com/mcp