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Sewage treatment plant, Star City, Arkansas. NPDES permit AR0046477, in force until Jun 30, 2029. Last 12 months: over a limit 20 times (last May 2026), 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Coliform, fecal general, 7-day geometric mean | > 2420 #/100mL | ≤ 2000 #/100mL | — |
| December 2025 | BOD, carbonaceous [5 day, 20 C], monthly average | 11.5 mg/L | ≤ 10 mg/L | 15% |
| December 2025 | Coliform, fecal general, 30-day geometric mean | > 2420 #/100mL | ≤ 1000 #/100mL | — |
| December 2025 | Coliform, fecal general, 7-day geometric mean | > 2420 #/100mL | ≤ 2000 #/100mL | — |
| December 2025 | Oxygen, dissolved [DO], instantaneous minimum | 5.51 mg/L | ≥ 6 mg/L | 8% |
| January 2026 | Coliform, fecal general, 7-day geometric mean | > 2420 #/100mL | ≤ 2000 #/100mL | — |
| January 2026 | Solids, total suspended, monthly average | 57 lb/d | ≤ 46.9 lb/d | 22% |
| February 2026 | Solids, total suspended, monthly average | 60.6 lb/d | ≤ 46.9 lb/d | 29% |
| March 2026 | BOD, carbonaceous [5 day, 20 C], 7-day average | 20.2 mg/L | ≤ 15 mg/L | 35% |
| March 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 11.1 mg/L | ≤ 10 mg/L | 11% |
| March 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 90 lb/d | ≤ 31.3 lb/d | 188% |
| March 2026 | Coliform, fecal general, 30-day geometric mean | 1055 #/100mL | ≤ 1000 #/100mL | 6% |
| March 2026 | Coliform, fecal general, 7-day geometric mean | > 2420 #/100mL | ≤ 2000 #/100mL | — |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 36.12 lb/d | ≤ 25 lb/d | 44% |
| March 2026 | Solids, total suspended, monthly average | 78.2 lb/d | ≤ 46.9 lb/d | 67% |
| April 2026 | Coliform, fecal general, 30-day geometric mean | > 2420 #/100mL | ≤ 1000 #/100mL | — |
| April 2026 | Coliform, fecal general, 7-day geometric mean | > 2420 #/100mL | ≤ 2000 #/100mL | — |
| May 2026 | Solids, total suspended, 7-day average | 31.5 mg/L | ≤ 22.5 mg/L | 40% |
| May 2026 | Solids, total suspended, monthly average | 110.09 lb/d | ≤ 46.9 lb/d | 135% |
| May 2026 | Solids, total suspended, monthly average | 16.5 mg/L | ≤ 15 mg/L | 10% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | May–Oct |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 15 mg/L | all year |
| Solids, total suspended | 7-day average | ≤ 22.5 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 46.9 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.1 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 6.1 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 12 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 6.1 mg/L | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 15.6 lb/d | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 25 lb/d | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 19.1 lb/d | Apr |
| 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 | ≤ 1000 #/100mL | all year |
| Coliform, fecal general | 7-day geometric mean | ≤ 2000 #/100mL | all year |
| 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 | ≤ 10 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 15 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 31.3 lb/d | all year |
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/AR0046477 · MCP: https://passage-data.com/mcp