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Arches Special Service District

Sewage treatment plant, Moab, Utah. NPDES permit UT0025828, in force until May 31, 2031. Last 12 months: over a limit 14 times (last August 2026), 1 required value missing, 9 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (16 values), outfall 002 form A monthly (16 values), outfall 001 form M quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 8 of 24 reports late

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

All 14 values over a limit
Period endingOutfallParameterReportedLimitOver by
June 2026001BOD, 5-day, 20 deg. C, maximum monthly average40 mg/L≤ 25 mg/L60%
June 2026001BOD, 5-day, 20 deg. C, maximum weekly average40 mg/L≤ 35 mg/L14%
June 2026001BOD, 5-day, percent removal, minimum82.5 %≥ 85 %17%
June 2026001Solids, total suspended, maximum monthly average28 mg/L≤ 25 mg/L12%
June 2026002E. coli, maximum monthly average210 #/100mL≤ 126 #/100mL67%
June 2026002E. coli, maximum weekly average210 #/100mL≤ 158 #/100mL33%
June 2026002Solids, total suspended, maximum monthly average70 mg/L≤ 25 mg/L180%
June 2026002Solids, total suspended, maximum weekly average70 mg/L≤ 35 mg/L100%
July 2026001Solids, suspended percent removal, minimum76.4 %≥ 85 %57%
July 2026002E. coli, maximum monthly average> 2400 #/100mL≤ 126 #/100mL—
July 2026002E. coli, maximum weekly average> 2400 #/100mL≤ 158 #/100mL—
August 2026001Solids, suspended percent removal, minimum81.7 %≥ 85 %22%
August 2026002E. coli, maximum monthly average1300 #/100mL≤ 126 #/100mL932%
August 2026002E. coli, maximum weekly average1300 #/100mL≤ 158 #/100mL723%

Limits in force (43)

ParameterStatisticLimitMonthsOutfall
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
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
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]maximum monthly averagereport 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
Cadmium, total [as Cd]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
Lead, total [as Pb]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
Zinc, total [as Zn]daily maximumreport only (mg/L)all year001
Selenium, total [as Se]daily maximumreport only (mg/L)all year001
Phosphate, ortho [as P]maximum 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
BOD, 5-day, percent removalminimum≥ 85 %all year001
Solids, suspended percent removalminimum≥ 85 %all year001
Flow, totalmaximum monthly average≤ 50000 gal/dall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 25 mg/Lall year002
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 35 mg/Lall year002
pHdaily minimum≥ 6.5 SUall year002
pHdaily maximum≤ 9 SUall year002
Solids, total suspendedmaximum monthly average≤ 25 mg/Lall year002
Solids, total suspendedmaximum weekly average≤ 35 mg/Lall year002
Oil & Greasedaily maximum≤ 10 mg/Lall year002
Nitrogen, ammonia total [as N]maximum monthly averagereport only (mg/L)all year002
Iron, total [as Fe]maximum monthly averagereport only (mg/L)all year002
Aluminum, total [as Al]maximum monthly averagereport only (mg/L)all year002
Chlorine, total residualdaily maximumreport only (mg/L)all year002
E. colimaximum monthly average≤ 126 #/100mLall year002
E. colimaximum weekly average≤ 158 #/100mLall year002
Solids, total dissolveddaily maximum≤ 1 ton/dall year002
Flow, totalmaximum monthly average≤ 100000 gal/dall year002
Oil and grease visualdaily maximumreport only (N=0;Y=1)all year002

How strict are these limits?

Cited limits by parameter: Utah'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/UT0025828 · MCP: https://passage-data.com/mcp