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Sewage treatment plant, Hardy, Arkansas. NPDES permit AR0037991, in force until Jul 31, 2028. Last 12 months: over a limit 17 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Coliform, fecal general, 30-day geometric mean | 325 #/100mL | ≤ 200 #/100mL | 63% |
| October 2025 | Coliform, fecal general, 7-day geometric mean | 480 #/100mL | ≤ 200 #/100mL | 140% |
| November 2025 | Coliform, fecal general, 7-day geometric mean | 484 #/100mL | ≤ 200 #/100mL | 142% |
| November 2025 | Solids, total suspended, 7-day average | 39 mg/L | ≤ 22.5 mg/L | 73% |
| November 2025 | Solids, total suspended, monthly average | 24.87 lb/d | ≤ 21.9 lb/d | 14% |
| November 2025 | Solids, total suspended, monthly average | 27 mg/L | ≤ 15 mg/L | 80% |
| December 2025 | Coliform, fecal general, 30-day geometric mean | 1395 #/100mL | ≤ 200 #/100mL | 598% |
| December 2025 | Coliform, fecal general, 7-day geometric mean | 1720 #/100mL | ≤ 200 #/100mL | 760% |
| December 2025 | Solids, total suspended, 7-day average | 36 mg/L | ≤ 22.5 mg/L | 60% |
| December 2025 | Solids, total suspended, monthly average | 30 mg/L | ≤ 15 mg/L | 100% |
| January 2026 | BOD, carbonaceous [5 day, 20 C], 7-day average | 27.3 mg/L | ≤ 15 mg/L | 82% |
| January 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 16.6 mg/L | ≤ 10 mg/L | 66% |
| January 2026 | Solids, total suspended, 7-day average | 35 mg/L | ≤ 22.5 mg/L | 56% |
| January 2026 | Solids, total suspended, monthly average | 23.5 mg/L | ≤ 15 mg/L | 57% |
| February 2026 | Coliform, fecal general, 7-day geometric mean | 238 #/100mL | ≤ 200 #/100mL | 19% |
| May 2026 | Coliform, fecal general, 7-day geometric mean | 244 #/100mL | ≤ 200 #/100mL | 22% |
| July 2026 | Coliform, fecal general, 7-day geometric mean | > 2000 #/100mL | ≤ 200 #/100mL | — |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 mg/L | all year |
| 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 | ≤ 21.9 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 7.5 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 15 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 7.3 lb/d | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 14.6 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | 7-day average | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | all year |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year |
| Nitrite + Nitrate total [as N] | 7-day average | report only (mg/L) | all year |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | 7-day average | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| 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 |
| Chlorine, total residual | instantaneous maximum | report only (mg/L) | all year |
| Coliform, fecal general | 30-day geometric mean | ≤ 200 #/100mL | all year |
| Coliform, fecal general | 7-day geometric mean | ≤ 200 #/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 | ≤ 14.6 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/AR0037991 · MCP: https://passage-data.com/mcp