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Forest Hills Metro District

Sewage treatment plant, Golden, Colorado. NPDES permit CO0037044 expired Jan 31, 2024; its limits still apply. Last 12 months: over a limit 11 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (20 values), outfall 001 form Q quarterly (5 values), outfall 300 form I monthly (6 values), outfall 300 form Q quarterly (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 32 reports late

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

Period endingParameterReportedLimitOver by
November 2025E. coli, 30-day geometric mean> 2419.6 #/100mL≤ 126 #/100mL—
November 2025E. coli, maximum 7-day geometric mean> 2419.6 #/100mL≤ 252 #/100mL—
December 2025E. coli, 30-day geometric mean2419.6 #/100mL≤ 126 #/100mL1820%
December 2025E. coli, maximum 7-day geometric mean2419.6 #/100mL≤ 252 #/100mL860%
March 2026E. coli, 30-day geometric mean1733 #/100mL≤ 126 #/100mL1275%
March 2026E. coli, maximum 7-day geometric mean1733 #/100mL≤ 252 #/100mL588%
April 2026Nitrogen, inorganic total, daily maximum39.64 mg/L≤ 10 mg/L296%
May 2026E. coli, 30-day geometric mean142 #/100mL≤ 126 #/100mL13%
May 2026Phosphorus, total [as P], 30-day average1.98 mg/L≤ 1 mg/L98%
August 2026E. coli, 30-day geometric mean> 2419.6 #/100mL≤ 126 #/100mL—
August 2026E. coli, maximum 7-day geometric mean> 2419.6 #/100mL≤ 252 #/100mL—

Limits in force (66)

ParameterStatisticLimitMonthsOutfall
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
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspended30-day average≤ 30 mg/Lall year001
Solids, total suspendedmaximum 7-day average≤ 45 mg/Lall year001
Nitrogen, ammonia total [as N]30-day average≤ 5.1 mg/LApr001
Nitrogen, ammonia total [as N]30-day average≤ 5.9 mg/LFeb001
Nitrogen, ammonia total [as N]30-day average≤ 5.7 mg/LJan001
Nitrogen, ammonia total [as N]30-day average≤ 3.8 mg/LJun001
Nitrogen, ammonia total [as N]30-day average≤ 4.6 mg/LMay001
Nitrogen, ammonia total [as N]30-day average≤ 3.3 mg/LJul001
Nitrogen, ammonia total [as N]30-day average≤ 3.1 mg/LAug001
Nitrogen, ammonia total [as N]30-day average≤ 5.4 mg/LMar001
Nitrogen, ammonia total [as N]30-day average≤ 3.4 mg/LSep001
Nitrogen, ammonia total [as N]30-day average≤ 4.6 mg/LNov001
Nitrogen, ammonia total [as N]30-day average≤ 4 mg/LOct001
Nitrogen, ammonia total [as N]30-day average≤ 5.1 mg/LDec001
Nitrogen, ammonia total [as N]daily maximum≤ 34 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 32 mg/LFeb001
Nitrogen, ammonia total [as N]daily maximum≤ 33 mg/LJan001
Nitrogen, ammonia total [as N]daily maximum≤ 32 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 35 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 32 mg/LJul001
Nitrogen, ammonia total [as N]daily maximum≤ 29 mg/LAug001
Nitrogen, ammonia total [as N]daily maximum≤ 32 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 30 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 30 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 33 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 28 mg/LDec001
Nitrogen, inorganic totaldaily maximumreport only (mg/L)all year001
Nitrogen, inorganic totaldaily maximum≤ 10 mg/Lall year001
Phosphorus, total [as P]30-day average≤ 1 mg/Lall year001
Phosphorus, total [as P]30-day average≤ 1 mg/Lall year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]30-day averagereport only (lb/d)all year001
Phosphorus, total [as P]30-day averagereport only (lb/mo)all year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Phosphorus, total [as P]daily maximumreport only (lb/mo)all year001
Phosphorus, total [as P]annual average≤ 80 lb/yrall year001
Phosphorus, total [as P]daily maximumreport only (lb/yr)all year001
Oil and greaseinstantaneous maximum≤ 10 mg/Lall year001
Flow, in conduit or thru treatment plant30-day average≤ .05 MGDall year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residual30-day average≤ .011 mg/Lall year001
Chlorine, total residualinstantaneous maximum≤ .019 mg/Lall year001
E. coli30-day geometric mean≤ 207 #/100mLall year001
E. coli30-day geometric mean≤ 126 #/100mLall year001
E. colimaximum 7-day geometric mean≤ 414 #/100mLall year001
E. colimaximum 7-day geometric mean≤ 252 #/100mLall year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Oil and grease visualinstantaneous maximumreport only (abst=0;prst=1)all year001
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. 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. 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/CO0037044 · MCP: https://passage-data.com/mcp