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Sewage treatment plant, Julesburg, Colorado. NPDES permit CO0021113 expired Dec 31, 2021; its limits still apply. Last 12 months: over a limit 5 times (last September 2026), 2 of 38 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Static Renewal 7 Day Chronic Ceriodaphnia dubia, minimum value | 86.5 tox chronic | ≥ 100 tox chronic | 14% |
| March 2026 | Static Renewal 7 Day Chronic Ceriodaphnia dubia, minimum value | 91.2 tox chronic | ≥ 100 tox chronic | 9% |
| March 2026 | Static Renewal 7 Day Chronic Pimephales promelas, minimum value | 47.7 tox chronic | ≥ 100 tox chronic | 52% |
| August 2026 | E. coli, 30-day geometric mean | 72 #/100mL | ≤ 64 #/100mL | 13% |
| September 2026 | Static Renewal 7 Day Chronic Ceriodaphnia dubia, minimum value | 50.7 tox chronic | ≥ 100 tox chronic | 49% |
| 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 | maximum 7-day average | ≤ 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 | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum 7-day average | ≤ 45 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.1 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.8 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.9 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.5 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.3 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.6 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.1 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.3 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.8 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.5 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.1 ug/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 28 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 28 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 29 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 28 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 27 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 27 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 27 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 28 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 29 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 28 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 26 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 29 ug/L | Dec | 001 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Iron, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Molybdenum, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Chromium, hexavalent dissolved [as Cr] | 30-day average | report only (ug/L) | all year | 001 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Silver, potentially dissolved | 30-day average | report only (ug/L) | all year | 001 |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Chromium, trivalent, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Manganese, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Manganese, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 001 |
| Chromium, trivalent total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Radium 226 + radium 228, total | 30-day average | report only (pCi/L) | all year | 001 |
| Uranium, total | 30-day average | report only (ug/L) | all year | 001 |
| Uranium, total | daily maximum | report only (ug/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .283 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 | ≤ .011 mg/L | all year | 001 |
| Chlorine, total residual | instantaneous maximum | ≤ .019 mg/L | all year | 001 |
| Mercury, total low level | 30-day average | report only (ug/L) | all year | 001 |
| E. coli | 30-day geometric mean | report only (#/100mL) | all year | 001 |
| E. coli | 30-day geometric mean | ≤ 64 #/100mL | all year | 001 |
| E. coli | maximum 7-day geometric mean | report only (#/100mL) | all year | 001 |
| E. coli | maximum 7-day geometric mean | ≤ 128 #/100mL | all year | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Oil and grease visual | instantaneous maximum | report only (abst=0;prst=1) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | ≥ 100 tox chronic | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | single sample | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | report only (tox chronic) | all year | 001 |
| Static Renewal 7 Day Chronic Pimephales promelas | minimum value | ≥ 100 tox chronic | 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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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/CO0021113 · MCP: https://passage-data.com/mcp