Passage Data · Check a report · Use it from your AI
Sewage treatment plant, major discharger, Superior, Colorado. NPDES permit CO0043010 expired Jul 31, 2014; its limits still apply. Last 12 months: over a limit 3 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | E. coli, thermotol, MF, MTEC, maximum 7-day geometric mean | 260.28 #/100mL | ≤ 252 #/100mL | 3% |
| May 2026 | E. coli, thermotol, MF, MTEC, maximum 7-day geometric mean | 706.06 #/100mL | ≤ 252 #/100mL | 180% |
| June 2026 | E. coli, thermotol, MF, MTEC, maximum 7-day geometric mean | 560.34 #/100mL | ≤ 252 #/100mL | 122% |
| 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 | ≤ 3.5 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.3 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.6 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.2 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.4 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.5 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.9 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.2 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.7 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.7 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.1 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.6 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 24 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 28 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 28 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 29 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 26 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 22 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 22 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30 mg/L | Dec | 001 |
| Iron, total recoverable | 30-day geometric mean | ≤ 1000 ug/L | all year | 001 |
| Chromium, hexavalent [as Cr] | 30-day average | ≤ 11 ug/L | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ 16 ug/L | all year | 001 |
| Chromium, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Chromium, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | 30-day average | ≤ 258 ug/L | all year | 001 |
| Zinc, potentially dissolved | daily maximum | ≤ 256 ug/L | all year | 001 |
| Copper, potentially dissolved | 30-day average | report only (ug/L) | all year | 001 |
| Copper, potentially dissolved | 30-day average | ≤ 20 ug/L | all year | 001 |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Copper, potentially dissolved | daily maximum | ≤ 32 ug/L | all year | 001 |
| Chromium, hexavalent potentially disolvd | 30-day average | report only (ug/L) | all year | 001 |
| Chromium, hexavalent potentially disolvd | 30-day average | ≤ 11 ug/L | all year | 001 |
| Chromium, hexavalent potentially disolvd | daily maximum | report only (ug/L) | all year | 001 |
| Chromium, hexavalent potentially disolvd | daily maximum | ≤ 16 ug/L | all year | 001 |
| Nickel, potentially dissolvd | 30-day average | ≤ 113 ug/L | all year | 001 |
| Nickel, potentially dissolvd | daily maximum | ≤ 1020 ug/L | all year | 001 |
| Selenium, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Selenium, potentially dissolvd | 30-day average | ≤ 4.6 ug/L | all year | 001 |
| Selenium, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Selenium, potentially dissolvd | daily maximum | ≤ 18 ug/L | all year | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 001 |
| E. coli, thermotol, MF, MTEC | 30-day geometric mean | ≤ 126 #/100mL | all year | 001 |
| E. coli, thermotol, MF, MTEC | maximum 7-day geometric mean | ≤ 252 #/100mL | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ 2.2 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 | report only (mg/L) | all year | 001 |
| Chlorine, total residual | 30-day average | ≤ .011 mg/L | all year | 001 |
| Chlorine, total residual | instantaneous maximum | ≤ .5 mg/L | all year | 001 |
| Chlorine, total residual | instantaneous maximum | ≤ .019 mg/L | all year | 001 |
| Cyanide, free available | daily maximum | report only (ug/L) | all year | 001 |
| Cyanide, free available | daily maximum | ≤ 5 ug/L | all year | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | single sample | report only (tox chronic) | all year | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | single sample | report only (tox chronic) | all year | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | minimum value | report only (tox chronic) | all year | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | minimum value | report only (tox chronic) | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | single sample | report only (tox chronic) | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | single sample | report only (tox chronic) | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | minimum value | report only (tox chronic) | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | minimum value | report only (tox chronic) | all year | 001 |
| Mercury, total [as Hg] | 30-day average | report only (ug/L) | all year | 001 |
| Mercury, total [as Hg] | 30-day average | ≤ .01 ug/L | 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 (N=0;Y=1) | all year | 001 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (%) | all year | 001 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | single sample | report only (%) | all year | 001 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | report only (%) | all year | 001 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum value | ≥ 100 % | all year | 001 |
| %Effect Static Renewal 7Day Chronic Pimephales promelas | single sample | report only (%) | all year | 001 |
| %Effect Static Renewal 7Day Chronic Pimephales promelas | single sample | report only (%) | all year | 001 |
| %Effect Static Renewal 7Day Chronic Pimephales promelas | minimum value | report only (%) | all year | 001 |
| %Effect Static Renewal 7Day Chronic Pimephales promelas | minimum value | ≥ 100 % | all year | 001 |
| 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.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/CO0043010 · MCP: https://passage-data.com/mcp