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Sewage treatment plant, La Jara, Colorado. NPDES permit CO0020150 expired Nov 30, 2024; its limits still apply. Last 12 months: over a limit 18 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | pH, maximum | 9.05 SU | ≤ 9 SU | — |
| January 2026 | BOD, 5-day, percent removal, minimum | 84.7 % | ≥ 85 % | 2% |
| January 2026 | pH, maximum | 9.09 SU | ≤ 9 SU | — |
| February 2026 | BOD, 5-day, 20 deg. C, 30-day average | 56 mg/L | ≤ 30 mg/L | 87% |
| February 2026 | BOD, 5-day, 20 deg. C, maximum 7-day average | 56 mg/L | ≤ 45 mg/L | 24% |
| February 2026 | BOD, 5-day, percent removal, minimum | 32.5 % | ≥ 85 % | 350% |
| February 2026 | pH, maximum | 9.33 SU | ≤ 9 SU | — |
| March 2026 | BOD, 5-day, 20 deg. C, 30-day average | 55 mg/L | ≤ 30 mg/L | 83% |
| March 2026 | BOD, 5-day, 20 deg. C, maximum 7-day average | 55 mg/L | ≤ 45 mg/L | 22% |
| March 2026 | BOD, 5-day, percent removal, minimum | 59.6 % | ≥ 85 % | 169% |
| April 2026 | BOD, 5-day, 20 deg. C, 30-day average | 37 mg/L | ≤ 30 mg/L | 23% |
| April 2026 | BOD, 5-day, percent removal, minimum | 65.1 % | ≥ 85 % | 133% |
| April 2026 | pH, maximum | 9.12 SU | ≤ 9 SU | — |
| May 2026 | BOD, 5-day, percent removal, minimum | 66.7 % | ≥ 85 % | 122% |
| May 2026 | pH, maximum | 9.17 SU | ≤ 9 SU | — |
| June 2026 | BOD, 5-day, percent removal, minimum | 76.7 % | ≥ 85 % | 55% |
| June 2026 | pH, maximum | 9.73 SU | ≤ 9 SU | — |
| July 2026 | pH, maximum | 9.43 SU | ≤ 9 SU | — |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | 30-day average | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 45 mg/L | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Alkalinity, total [as CaCO3] | 30-day average | report only (mg/L) | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 75 mg/L | all year | 001 |
| Solids, total suspended | maximum 7-day average | ≤ 110 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Jan | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Feb | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Mar | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Apr | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 65 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 65 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Jul | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Aug | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Sep | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Oct | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Nov | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Dec | 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 | ≤ 65 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 65 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 | report only (mg/L) | Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Dec | 001 |
| Nitrogen, inorganic total | daily maximum | ≤ 23 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .17 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| E. coli | 30-day average | ≤ 2000 #/100mL | all year | 001 |
| E. coli | maximum 7-day average | ≤ 4000 #/100mL | all year | 001 |
| BOD, 5-day, percent removal | minimum | ≥ 85 % | all year | 001 |
| Oil and grease visual | daily maximum | report only (pass=0;fail=1) | all year | 001 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | report only (mg/L) | all year | 002 |
| pH | daily maximum | report only (SU) | all year | 002 |
| Alkalinity, total [as CaCO3] | 30-day average | report only (mg/L) | all year | 002 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 002 |
| Solids, total suspended | maximum 7-day average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, inorganic total | daily maximum | report only (mg/L) | all year | 002 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 003 |
| pH | daily maximum | report only (SU) | all year | 003 |
| Alkalinity, total [as CaCO3] | 30-day average | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, inorganic total | daily maximum | report only (mg/L) | all year | 003 |
| Temperature, water deg. centigrade | 30-day average | report only (deg C) | all year | 300 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 300 |
| 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 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | 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 |
| pH | daily maximum | report only (SU) | all year | 300 |
| Alkalinity, total [as CaCO3] | 30-day average | report only (mg/L) | 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 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | all year | 300 |
| Nitrogen, ammonia total [as N] | daily maximum | 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 |
| Nitrogen, Kjeldahl, total [TKN] [water] | 30-day average | report only (mg/L) | 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/CO0020150 · MCP: https://passage-data.com/mcp