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Wellsville City Corporation

Sewage treatment plant, Wellsville, Utah. NPDES permit UT0020371, in force until May 31, 2030. Last 12 months: over a limit 2 times (last August 2026), 23 required values missing, 5 of 26 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (29 values), outfall 001 form P every 4 months (1 value), outfall 001R form A monthly (8 values), outfall 001 form M twice a year, outfall 001 form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 2 of 25 reports late

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

Period endingParameterReportedLimitOver by
April 2026BOD, 5-day, percent removal, monthly minimum77.67 %≥ 85 %49%
August 2026pH, daily minimum6.48 SU≥ 6.5 SU—

Limits in force (68)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademaximum monthly averagereport only (deg C)all year001
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
Nitrogen, ammonia total [as N]maximum monthly average≤ 35.8 mg/LJan–Mar001
Nitrogen, ammonia total [as N]maximum monthly average≤ 24 mg/LApr–Jun001
Nitrogen, ammonia total [as N]maximum monthly average≤ 11.4 mg/LJul–Sep001
Nitrogen, ammonia total [as N]maximum monthly average≤ 12.9 mg/LOct–Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 36.1 mg/LJan–Mar001
Nitrogen, ammonia total [as N]daily maximum≤ 29.6 mg/LApr–Jun001
Nitrogen, ammonia total [as N]daily maximum≤ 13.7 mg/LJul–Sep001
Nitrogen, ammonia total [as N]daily maximum≤ 16.2 mg/LOct–Dec001
Nitrogen, Kjeldahl, total [as N]maximum monthly averagereport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]maximum monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]maximum monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]annual maximum≤ 953 lb/yrall year001
Phosphorus, total [as P]maximum monthly averagereport only (mg/L)all year001
Cyanide, total [as CN]daily maximumreport only (mg/L)all year001
Cyanide, total [as CN]daily maximumreport only (mg/L)all year001
Arsenic, total [as As]daily maximumreport only (mg/L)all year001
Arsenic, total [as As]daily maximumreport only (mg/L)all year001
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year001
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year001
Chromium, total [as Cr]daily maximumreport only (mg/L)all year001
Chromium, total [as Cr]daily maximumreport only (mg/L)all year001
Copper, total [as Cu]daily maximumreport only (mg/L)all year001
Copper, total [as Cu]daily maximumreport only (mg/L)all year001
Lead, total [as Pb]daily maximumreport only (mg/L)all year001
Lead, total [as Pb]daily maximumreport only (mg/L)all year001
Nickel, total [as Ni]daily maximumreport only (mg/L)all year001
Nickel, total [as Ni]daily maximumreport only (mg/L)all year001
Silver, total [as Ag]daily maximumreport only (mg/L)all year001
Silver, total [as Ag]daily maximumreport only (mg/L)all year001
Zinc, total [as Zn]daily maximumreport only (mg/L)all year001
Zinc, total [as Zn]daily maximumreport only (mg/L)all year001
Selenium, total [as Se]daily maximumreport only (mg/L)all year001
Selenium, total [as Se]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P] [per season]EPA's "SEAN MAX"≤ 159 lb/seasonJun–Sep001
Phosphorus, total [as P] [per season]EPA's "SEAN MAX"≤ 794 lb/seasonFeb, Mar, Apr, May, Oct, Nov, Dec001
Flow, in conduit or thru treatment plantmaximum monthly average≤ .68 MGDall year001
Flow, in conduit or thru treatment plantmaximum monthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantEPA's "DPD MAX"report only (MGD)all year001
Phosphorus, orthomaximum monthly averagereport only (mg/L)all year001
E. coli30-day geometric mean≤ 126 #/100mLall year001
E. coli7-day geometric mean≤ 157 #/100mLall year001
Solids, total dissolvedmaximum monthly averagereport only (mg/L)all year001
Nitrogen, nitrate total [as NO3]maximum monthly averagereport only (mg/L)all year001
Nitrogen, nitrite total [as NO2]maximum monthly averagereport only (mg/L)all year001
Mercury, total [as Hg]daily maximumreport only (mg/L)all year001
Mercury, total [as Hg]daily maximumreport only (mg/L)all year001
BOD, 5-day, percent removalmonthly minimum≥ 85 %all year001
Solids, suspended percent removalmonthly minimum≥ 85 %all year001
Flow ratedaily maximumreport only (MGD)all year001R
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 25 mg/Lall year001R
pHdaily minimum≥ 6 SUall year001R
pHdaily maximum≤ 9 SUall year001R
Solids, total suspendedmaximum monthly average≤ 25 mg/Lall year001R
Solids, total suspendedmaximum weekly average≤ 35 mg/Lall year001R
E. colimaximum 7-day geometric mean≤ 126 #/100mLall year001R
E. colidaily maximum≤ 500 #/100mLall year001R

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/UT0020371 · MCP: https://passage-data.com/mcp