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Sewage treatment plant, Weld County, Colorado. NPDES permit CO0046876 expired Apr 30, 2023; its limits still apply. Last 12 months: over a limit once (last November 2025). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | E. coli, maximum 7-day geometric mean | 1986 #/100mL | ≤ 252 #/100mL | 688% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 45 mg/L | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | maximum 7-day average | ≤ 45 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.2 mg/L | Mar | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.1 mg/L | Jun | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.9 mg/L | Sep | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.4 mg/L | Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 21 mg/L | Mar | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 20 mg/L | Jun | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19 mg/L | Sep | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19 mg/L | Dec | 002 |
| Manganese, potentially dissolvd | 30-day average | report only (mg/L) | all year | 002 |
| Manganese, potentially dissolvd | daily maximum | report only (mg/L) | all year | 002 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .5 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | 30-day average | ≤ .011 mg/L | all year | 002 |
| Chlorine, total residual | instantaneous maximum | ≤ .019 mg/L | all year | 002 |
| E. coli | 30-day geometric mean | ≤ 126 #/100mL | all year | 002 |
| E. coli | maximum 7-day geometric mean | ≤ 252 #/100mL | all year | 002 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Oil and grease visual | instantaneous maximum | report only (abst=0;prst=1) | all year | 002 |
| Plant capacity fact. percent of capacity | 30-day average | report only (%) | all year | 300 |
| Plant capacity fact. percent of capacity | 30-day average | report only (%) | all year | 300 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year | 300 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | report only (mg/L) | all year | 300 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (lb/d) | all year | 300 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | report only (lb/d) | all year | 300 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 300 |
| Solids, total suspended | maximum 7-day average | report only (mg/L) | all year | 300 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 300 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 300 |
Cited limits by parameter: Colorado's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/CO0046876 · MCP: https://passage-data.com/mcp