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Duchesne City Corp

Sewage treatment plant, Duchesne, Utah. NPDES permit UT0020095, in force until Oct 15, 2029. Last 12 months: no values over a limit, 2 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (32 values), outfall 001 form Y yearly, outfall SUM form A yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (34)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 5 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 25 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 35 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmaximum weekly averagereport only (mg/L)all year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmaximum monthly average≤ 25 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 35 mg/Lall year001
Solids, total suspendedmaximum monthly averagereport only (mg/L)all year001
Solids, total suspendedmaximum weekly averagereport only (mg/L)all year001
Oil & Greasedaily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]30-day averagereport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]30-day averagereport only (mg/L)all year001
Phosphorus, total [as P]30-day averagereport only (mg/L)all year001
Phosphorus, total [as P]year-to-date total≤ 1279 lb/yrall year001
Phosphorus, total [as P]30-day averagereport only (mg/L)all year001
Boron, total [as B]30-day averagereport only (mg/L)all year001
Flow, in conduit or thru treatment plantmaximum monthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximum≤ .42 MGDall year001
Flow, in conduit or thru treatment plantmaximum monthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximum≤ .619 mg/Lall year001
Phosphorus, ortho30-day averagereport only (mg/L)all year001
E. colimaximum monthly average≤ 126 #/100mLall year001
E. colimaximum weekly average≤ 157 #/100mLall year001
Solids, total dissolved30-day averagereport only (mg/L)all year001
Solids, total dissolveddaily maximum≤ 1 ton/dall year001
Nitrogen, nitrate total [as NO3]30-day averagereport only (mg/L)all year001
Nitrogen, nitrite total [as NO2]30-day averagereport only (mg/L)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Solids, total dissolvedyear-to-date total≤ 366 ton/yrall yearSUM

How strict are these limits?

Cited limits by parameter: Utah'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/UT0020095 · MCP: https://passage-data.com/mcp