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Monticello, City STP

Sewage treatment plant, Monticello, Utah. NPDES permit UT0024503, in force until Mar 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (30 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 12 reports late

Limits in force (36)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 5.5 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 25 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 35 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmaximum weekly averagereport only (mg/L)all year
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmaximum monthly average≤ 25 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 35 mg/Lall year
Solids, total suspendedmaximum monthly averagereport only (mg/L)all year
Solids, total suspendedmaximum weekly averagereport only (mg/L)all year
Oil & Greasedaily maximum≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]30-day averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]30-day averagereport only (mg/L)all year
Phosphorus, total [as P]30-day averagereport only (mg/L)all year
Phosphorus, total [as P]30-day averagereport only (mg/L)all year
Phosphate, ortho [as P]30-day averagereport only (mg/L)all year
Chlorine, total residualmaximum monthly average≤ .02 mg/LJul–Sep
Chlorine, total residualmaximum monthly average≤ .011 mg/LOct–Dec
Chlorine, total residualmaximum monthly average≤ .021 mg/LJan–Mar
Chlorine, total residualmaximum monthly average≤ .027 mg/LApr–Jun
Chlorine, total residualdaily maximum≤ .035 mg/LJul–Sep
Chlorine, total residualdaily maximum≤ .019 mg/LOct–Dec
Chlorine, total residualdaily maximum≤ .037 mg/LJan–Mar
Chlorine, total residualdaily maximum≤ .048 mg/LApr–Jun
E. colimaximum monthly average≤ 126 #/100mLall year
E. colimaximum weekly average≤ 158 #/100mLall year
Solids, total dissolvedmaximum monthly averagereport only (mg/L)all year
Solids, total dissolvedmaximum monthly averagereport only (mg/L)all year
Solids, total dissolvedmaximum monthly average≤ 400 mg/Lall year
Nitrogen, nitrate total [as NO3]30-day averagereport only (mg/L)all year
Nitrogen, nitrite total [as NO2]30-day averagereport only (mg/L)all year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Flow, totaldaily maximum≤ .32 MGDall year

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/UT0024503 · MCP: https://passage-data.com/mcp