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Sewage treatment plant, Eudora, Arkansas. NPDES permit AR0033839 expired Mar 31, 2026; its limits still apply. Last 12 months: over a limit 8 times (last July 2026), 18 required values missing, 10 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Oxygen, dissolved [DO], instantaneous minimum | 4.38 mg/L | ≥ 5 mg/L | 12% |
| October 2025 | Oxygen, dissolved [DO], instantaneous minimum | 4.38 mg/L | ≥ 5 mg/L | 12% |
| January 2026 | pH, maximum | 9.4 SU | ≤ 9 SU | — |
| May 2026 | Nitrogen, ammonia total [as N], 7-day average | 24 mg/L | ≤ 7.5 mg/L | 220% |
| May 2026 | Nitrogen, ammonia total [as N], monthly average | 8.5 mg/L | ≤ 5 mg/L | 70% |
| May 2026 | Oxygen, dissolved [DO], instantaneous minimum | 3.8 mg/L | ≥ 5 mg/L | 24% |
| July 2026 | Coliform, fecal general, 30-day geometric mean | 487.9 #/100mL | ≤ 200 #/100mL | 144% |
| July 2026 | Coliform, fecal general, 7-day geometric mean | > 2400 #/100mL | ≤ 400 #/100mL | — |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | May–Oct |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 2 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, 5-day, 20 deg. C | 7-day average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 150.1 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 150.1 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 7.5 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 25 lb/d | May–Oct |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Coliform, fecal general | 30-day geometric mean | ≤ 200 #/100mL | May–Sep |
| Coliform, fecal general | 30-day geometric mean | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Coliform, fecal general | 7-day geometric mean | ≤ 400 #/100mL | May–Sep |
| Coliform, fecal general | 7-day geometric mean | ≤ 2000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Overflows | monthly total | report only (occur/mo) | all year |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (gal) | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 38 mg/L | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 125.1 lb/d | May–Oct |
Cited limits by parameter: Arkansas'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/AR0033839 · MCP: https://passage-data.com/mcp