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Logan City Corporation

Sewage treatment plant, major discharger, Logan, Utah. NPDES permit UT0021920, in force until Oct 31, 2030. Last 12 months: over a limit once (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (32 values), form M quarterly, form P twice a year, form W quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 44 reports late

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

Period endingParameterReportedLimitOver by
May 2026Cyanide, total [as CN], maximum monthly average6 ug/L≤ 5.4 ug/L11%

Limits in force (72)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/LJul–Sep
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/LOct–Dec
Oxygen, dissolved [DO]monthly average minimum≥ 4 mg/LJan–Mar
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/LApr–Jun
Oxygen, dissolved [DO]daily minimum≥ 4 mg/LJul–Sep
Oxygen, dissolved [DO]daily minimum≥ 4 mg/LOct–Dec
Oxygen, dissolved [DO]daily minimum≥ 4 mg/LJan–Mar
Oxygen, dissolved [DO]daily minimum≥ 4 mg/LApr–Jun
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]maximum monthly average≤ 2 mg/LJul–Sep
Nitrogen, ammonia total [as N]maximum monthly average≤ 2 mg/LApr–Jun
Nitrogen, ammonia total [as N]maximum monthly average≤ 3.5 mg/LOct–Dec
Nitrogen, ammonia total [as N]maximum monthly average≤ 3 mg/LJan–Mar
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/LJul–Sep
Nitrogen, ammonia total [as N]daily maximum≤ 5.8 mg/LApr–Jun
Nitrogen, ammonia total [as N]daily maximum≤ 12 mg/LOct–Dec
Nitrogen, ammonia total [as N]daily maximum≤ 11 mg/LJan–Mar
Nitrogen, Kjeldahl, total [as N]maximum monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]maximum monthly averagereport only (mg/L)all year
Phosphorus, total [as P]maximum monthly averagereport only (mg/L)all year
Phosphorus, total [as P]semi-annual maximum≤ 12901 kg/yrJan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]semi-annual maximum≤ 11487 kg/yrMay, Jun, Aug, Sep, Oct
Phosphorus, total [as P]maximum monthly averagereport only (mg/L)all year
Cyanide, total [as CN]maximum monthly average≤ 5.4 ug/Lall year
Cyanide, total [as CN]quarterly maximumreport only (mg/L)all year
Cyanide, total [as CN]quarterly maximumreport only (mg/L)all year
Arsenic, total [as As]quarterly maximumreport only (mg/L)all year
Arsenic, total [as As]quarterly maximumreport only (mg/L)all year
Cadmium, total [as Cd]quarterly maximumreport only (mg/L)all year
Cadmium, total [as Cd]quarterly maximumreport only (mg/L)all year
Chromium, total [as Cr]quarterly maximumreport only (mg/L)all year
Chromium, total [as Cr]quarterly maximumreport only (mg/L)all year
Copper, total [as Cu]quarterly maximumreport only (mg/L)all year
Copper, total [as Cu]quarterly maximumreport only (mg/L)all year
Lead, total [as Pb]quarterly maximumreport only (mg/L)all year
Lead, total [as Pb]quarterly maximumreport only (mg/L)all year
Molybdenum, total [as Mo]quarterly maximumreport only (mg/L)all year
Molybdenum, total [as Mo]quarterly maximumreport only (mg/L)all year
Nickel, total [as Ni]quarterly maximumreport only (mg/L)all year
Nickel, total [as Ni]quarterly maximumreport only (mg/L)all year
Silver, total [as Ag]quarterly maximumreport only (mg/L)all year
Silver, total [as Ag]quarterly maximumreport only (mg/L)all year
Zinc, total recoverablequarterly maximumreport only (mg/L)all year
Zinc, total recoverablequarterly maximumreport only (mg/L)all year
Copper, total recoverablemaximum monthly average≤ 25.2 mg/Lall year
Selenium, total [as Se]quarterly maximumreport only (mg/L)all year
Selenium, total [as Se]quarterly maximumreport only (mg/L)all year
Phosphate, ortho [as P]maximum monthly averagereport only (mg/L)all year
E. colimaximum monthly average≤ 126 #/100mLall year
E. colimaximum weekly average≤ 158 #/100mLall year
Solids, total dissolveddaily maximum≤ 1237 mg/Lall year
Nitrogen, nitrate total [as NO3]maximum monthly averagereport only (mg/L)all year
Nitrogen, nitrite total [as NO2]maximum monthly averagereport only (mg/L)all year
Mercury, total [as Hg]maximum monthly average≤ .012 ug/Lall year
Mercury, total [as Hg]quarterly maximumreport only (mg/L)all year
Mercury, total [as Hg]quarterly maximumreport only (mg/L)all year
BOD, 5-day, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year
Flow, totalmaximum monthly average≤ 21 MGDall year
Flow, totalmaximum monthly averagereport only (MGD)all year
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximum≤ 0 pass=0;fail=1Apr, May, Jun, Oct, Nov, Dec
Pass/Fail Static Renewal 7Day Chronic Pimephales promelasdaily maximum≤ 0 pass=0;fail=1Jan, Feb, Mar, Jul, Aug, Sep

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/UT0021920 · MCP: https://passage-data.com/mcp