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Sewerage Systems, Kremmling, Colorado. NPDES permit CO0048437 expired Jun 30, 2020; its limits still apply. Last 12 months: over a limit once (last July 2026), 4 of 25 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| July 2026 | pH, minimum | 6.37 SU | ≥ 6.5 SU |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 75 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 110 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 9.86 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.7 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.7 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.7 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.7 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.7 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.7 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.7 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 15.1 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.7 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 49 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 56 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jan | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Feb | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Mar | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 59 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 86 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | rolling average | report only (mg/L) | Nov | 001 |
| Nitrogen, ammonia total [as N] | rolling average | report only (mg/L) | Dec | 001 |
| Nitrogen, ammonia total [as N] | rolling average | ≤ 7.9 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | rolling average | ≤ 7.4 mg/L | Dec | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .3 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | 30-day average | ≤ .37 mg/L | all year | 001 |
| Chlorine, total residual | instantaneous maximum | ≤ .5 mg/L | all year | 001 |
| Chlorine, total residual | 30-day average | ≤ .057 mg/L | all year | 001 |
| E. coli | 30-day average | ≤ 1088 #/100mL | all year | 001 |
| E. coli | maximum 7-day average | ≤ 2176 #/100mL | all year | 001 |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Oil and grease visual | instantaneous maximum | report only (N=0;Y=1) | all year | 001 |
| 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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