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Paonia Town of

Sewage treatment plant, Paonia, Colorado. NPDES permit CO0047431 expired Jul 31, 2018; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (25 values), outfall 001 form AQ quarterly (6 values), outfall 001 form B monthly (25 values), outfall 001 form BQ quarterly (6 values), outfall 001 form C monthly (25 values), outfall 001 form CQ quarterly (6 values), and 1 more form
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 11 of 60 reports late

Limits in force (196)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademaximum weekly averagereport only (deg C)all year001
Temperature, water deg. centigrademaximum weekly averagereport only (deg C)all year001
Temperature, water deg. centigrademaximum weekly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum 7-day average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum 7-day average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum 7-day average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. C30-day average≤ 124 lb/dall year001
BOD, 5-day, 20 deg. C30-day average≤ 124 lb/dall year001
BOD, 5-day, 20 deg. C30-day average≤ 124 lb/dall year001
BOD, 5-day, 20 deg. Cmaximum 7-day average≤ 186 lb/dall year001
BOD, 5-day, 20 deg. Cmaximum 7-day average≤ 186 lb/dall year001
BOD, 5-day, 20 deg. Cmaximum 7-day average≤ 186 lb/dall year001
pHminimum≥ 6.5 SUall year001
pHminimum≥ 6.5 SUall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
pHmaximum≤ 9 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspended30-day average≤ 75 mg/Lall year001
Solids, total suspended30-day average≤ 75 mg/Lall year001
Solids, total suspended30-day average≤ 75 mg/Lall year001
Solids, total suspendedmaximum 7-day average≤ 110 mg/Lall year001
Solids, total suspendedmaximum 7-day average≤ 110 mg/Lall year001
Solids, total suspendedmaximum 7-day average≤ 110 mg/Lall year001
Solids, total suspended30-day average≤ 310 lb/dall year001
Solids, total suspended30-day average≤ 310 lb/dall year001
Solids, total suspended30-day average≤ 310 lb/dall year001
Solids, total suspendedmaximum 7-day average≤ 454 lb/dall year001
Solids, total suspendedmaximum 7-day average≤ 454 lb/dall year001
Solids, total suspendedmaximum 7-day average≤ 454 lb/dall year001
Nitrogen, ammonia total [as N]30-day average≤ 30 mg/LJun001
Nitrogen, ammonia total [as N]30-day average≤ 30 mg/LAug001
Nitrogen, ammonia total [as N]30-day average≤ 21 mg/LSep001
Nitrogen, ammonia total [as N]30-day average≤ 27 mg/LJul001
Nitrogen, ammonia total [as N]30-day average≤ 33 mg/LOct001
Nitrogen, ammonia total [as N]30-day average≤ 40 mg/LNov001
Nitrogen, ammonia total [as N]30-day average≤ 32 mg/LMay001
Nitrogen, ammonia total [as N]30-day average≤ 59 mg/LApr001
Nitrogen, ammonia total [as N]30-day average≤ 15 mg/LJun001
Nitrogen, ammonia total [as N]30-day average≤ 14 mg/LSep001
Nitrogen, ammonia total [as N]30-day average≤ 14 mg/LAug001
Nitrogen, ammonia total [as N]30-day average≤ 26 mg/LJan001
Nitrogen, ammonia total [as N]30-day average≤ 13 mg/LJul001
Nitrogen, ammonia total [as N]30-day average≤ 23 mg/LMar001
Nitrogen, ammonia total [as N]30-day average≤ 26 mg/LFeb001
Nitrogen, ammonia total [as N]30-day average≤ 16 mg/LOct001
Nitrogen, ammonia total [as N]30-day average≤ 25 mg/LNov001
Nitrogen, ammonia total [as N]30-day average≤ 19 mg/LMay001
Nitrogen, ammonia total [as N]30-day average≤ 35 mg/LApr001
Nitrogen, ammonia total [as N]30-day average≤ 60 mg/LJan001
Nitrogen, ammonia total [as N]30-day average≤ 60 mg/LFeb001
Nitrogen, ammonia total [as N]30-day average≤ 55 mg/LMar001
Nitrogen, ammonia total [as N]30-day average≤ 88 mg/LApr001
Nitrogen, ammonia total [as N]30-day average≤ 45 mg/LMay001
Nitrogen, ammonia total [as N]30-day average≤ 40 mg/LJun001
Nitrogen, ammonia total [as N]30-day average≤ 35 mg/LJul001
Nitrogen, ammonia total [as N]30-day average≤ 40 mg/LAug001
Nitrogen, ammonia total [as N]30-day average≤ 29 mg/LSep001
Nitrogen, ammonia total [as N]30-day average≤ 45 mg/LOct001
Nitrogen, ammonia total [as N]30-day average≤ 60 mg/LNov001
Nitrogen, ammonia total [as N]30-day average≤ 65 mg/LDec001
Nitrogen, ammonia total [as N]30-day average≤ 40 mg/LJan001
Nitrogen, ammonia total [as N]30-day average≤ 40 mg/LFeb001
Nitrogen, ammonia total [as N]30-day average≤ 40 mg/LMar001
Nitrogen, ammonia total [as N]30-day average≤ 40 mg/LDec001
Nitrogen, ammonia total [as N]30-day average≤ 26 mg/LDec001
Nitrogen, ammonia total [as N]daily maximum≤ 55 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 50 mg/LAug001
Nitrogen, ammonia total [as N]daily maximum≤ 50 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 45 mg/LJul001
Nitrogen, ammonia total [as N]daily maximum≤ 50 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 95 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 55 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 175 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 30 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 32 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 34 mg/LAug001
Nitrogen, ammonia total [as N]daily maximum≤ 40 mg/LJan001
Nitrogen, ammonia total [as N]daily maximum≤ 33 mg/LJul001
Nitrogen, ammonia total [as N]daily maximum≤ 40 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 40 mg/LFeb001
Nitrogen, ammonia total [as N]daily maximum≤ 28 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 40 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 35 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 40 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 130 mg/LJan001
Nitrogen, ammonia total [as N]daily maximum≤ 115 mg/LFeb001
Nitrogen, ammonia total [as N]daily maximum≤ 130 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 265 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 80 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 80 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 65 mg/LJul001
Nitrogen, ammonia total [as N]daily maximum≤ 65 mg/LAug001
Nitrogen, ammonia total [as N]daily maximum≤ 65 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 80 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 145 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 90 mg/LDec001
Nitrogen, ammonia total [as N]daily maximum≤ 90 mg/LJan001
Nitrogen, ammonia total [as N]daily maximum≤ 75 mg/LFeb001
Nitrogen, ammonia total [as N]daily maximum≤ 90 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 60 mg/LDec001
Nitrogen, ammonia total [as N]daily maximum≤ 38 mg/LDec001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LJul001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LAug001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LSep001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LOct001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LJul001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LAug001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LSep001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LOct001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LJul001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LAug001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LSep001
Nitrogen, ammonia total [as N]rolling average≤ 9.5 mg/LOct001
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, inorganic totaldaily maximumreport only (mg/L)all year001
Nitrogen, inorganic totaldaily maximumreport only (mg/L)all year001
Nitrogen, inorganic totaldaily maximumreport only (mg/L)all year001
Selenium, potentially dissolvd30-day averagereport only (ug/L)all year001
Selenium, potentially dissolvd30-day averagereport only (ug/L)all year001
Selenium, potentially dissolvd30-day averagereport only (ug/L)all year001
Oil and greaseinstantaneous maximum≤ 10 mg/Lall year001
Oil and greaseinstantaneous maximum≤ 10 mg/Lall year001
Oil and greaseinstantaneous maximum≤ 10 mg/Lall year001
Flow, in conduit or thru treatment plant30-day average≤ .2 MGDall year001
Flow, in conduit or thru treatment plant30-day average≤ .3 MGDall year001
Flow, in conduit or thru treatment plant30-day average≤ .495 MGDall year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residual30-day average≤ .036 mg/Lall year001
Chlorine, total residual30-day average≤ .015 mg/Lall year001
Chlorine, total residual30-day average≤ .024 mg/Lall year001
Chlorine, total residualinstantaneous maximum≤ .32 mg/Lall year001
Chlorine, total residualinstantaneous maximum≤ .14 mg/Lall year001
Chlorine, total residualinstantaneous maximum≤ .22 mg/Lall year001
E. coli30-day geometric mean≤ 2000 #/100mLMar001
E. coli30-day geometric mean≤ 2000 #/100mLJun001
E. coli30-day geometric mean≤ 2000 #/100mLSep001
E. coli30-day geometric mean≤ 2000 #/100mLDec001
E. coli30-day geometric mean≤ 2000 #/100mLMar001
E. coli30-day geometric mean≤ 1639 #/100mLJun001
E. coli30-day geometric mean≤ 1639 #/100mLSep001
E. coli30-day geometric mean≤ 2000 #/100mLDec001
E. coli30-day geometric mean≤ 1736 #/100mLMar001
E. coli30-day geometric mean≤ 1043 #/100mLJun001
E. coli30-day geometric mean≤ 1043 #/100mLSep001
E. coli30-day geometric mean≤ 1736 #/100mLDec001
E. colimaximum 7-day geometric mean≤ 4000 #/100mLMar001
E. colimaximum 7-day geometric mean≤ 4000 #/100mLJun001
E. colimaximum 7-day geometric mean≤ 4000 #/100mLSep001
E. colimaximum 7-day geometric mean≤ 4000 #/100mLDec001
E. colimaximum 7-day geometric mean≤ 4000 #/100mLMar001
E. colimaximum 7-day geometric mean≤ 3278 #/100mLJun001
E. colimaximum 7-day geometric mean≤ 3278 #/100mLSep001
E. colimaximum 7-day geometric mean≤ 4000 #/100mLDec001
E. colimaximum 7-day geometric mean≤ 3852 #/100mLMar001
E. colimaximum 7-day geometric mean≤ 2086 #/100mLJun001
E. colimaximum 7-day geometric mean≤ 2086 #/100mLSep001
E. colimaximum 7-day geometric mean≤ 3852 #/100mLDec001
Solids, total dissolved30-day averagereport only (mg/L)all year001
Solids, total dissolved30-day averagereport only (mg/L)all year001
Solids, total dissolved30-day averagereport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolved30-day averagereport only (mg/L)all year001
Solids, total dissolved30-day averagereport only (mg/L)all year001
Solids, total dissolved30-day averagereport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Oil and grease visualinstantaneous maximumreport only (abst=0;prst=1)all year001
Oil and grease visualinstantaneous maximumreport only (abst=0;prst=1)all year001
Oil and grease visualinstantaneous maximumreport only (abst=0;prst=1)Mar, Jun, Sep, Dec001
Plant capacity fact. percent of capacity30-day averagereport only (%)all year300
Plant capacity fact. percent of capacity30-day averagereport only (%)all year300
BOD, 5-day, 20 deg. C30-day averagereport only (mg/L)all year300
BOD, 5-day, 20 deg. Cmaximum 7-day averagereport only (mg/L)all year300
BOD, 5-day, 20 deg. C30-day averagereport only (lb/d)all year300
BOD, 5-day, 20 deg. Cmaximum 7-day averagereport only (lb/d)all year300
Solids, total suspended30-day averagereport only (mg/L)all year300
Solids, total suspendedmaximum 7-day averagereport only (mg/L)all year300
Flow, in conduit or thru treatment plant30-day averagereport only (MGD)all year300
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year300

How strict are these limits?

Cited limits by parameter: Colorado'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/CO0047431 · MCP: https://passage-data.com/mcp