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Sewage treatment plant, major discharger, Marion, Arkansas. NPDES permit AR0021971, in force until Dec 31, 2028. Last 12 months: over a limit 10 times (last July 2026), 28 required values missing, 5 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | BOD, 5-day, 20 deg. C, 7-day average | 67.6 mg/L | ≤ 45 mg/L | 50% |
| October 2025 | BOD, 5-day, 20 deg. C, 7-day average | 67.6 mg/L | ≤ 45 mg/L | 50% |
| October 2025 | BOD, 5-day, 20 deg. C, monthly average | 42.5 mg/L | ≤ 30 mg/L | 42% |
| October 2025 | BOD, 5-day, 20 deg. C, monthly average | 42.5 mg/L | ≤ 30 mg/L | 42% |
| January 2026 | BOD, 5-day, 20 deg. C, 7-day average | 68.7 mg/L | ≤ 45 mg/L | 53% |
| January 2026 | BOD, 5-day, 20 deg. C, monthly average | 46.83 mg/L | ≤ 30 mg/L | 56% |
| April 2026 | BOD, 5-day, 20 deg. C, 7-day average | 49.3 mg/L | ≤ 45 mg/L | 10% |
| April 2026 | BOD, 5-day, 20 deg. C, monthly average | 31.92 mg/L | ≤ 30 mg/L | 6% |
| July 2026 | BOD, 5-day, 20 deg. C, 7-day average | 47 mg/L | ≤ 45 mg/L | 4% |
| July 2026 | BOD, 5-day, 20 deg. C, monthly average | 32.7 mg/L | ≤ 30 mg/L | 9% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 2 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | 7-day average | ≤ 45 mg/L | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 90 mg/L | all year | 002 |
| Solids, total suspended | 7-day average | ≤ 135 mg/L | all year | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | 7-day average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | 7-day average | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 4.5 MGD | all year | 002 |
| Chlorine, total residual | instantaneous maximum | report only (mg/L) | all year | 002 |
| Coliform, fecal general | 30-day geometric mean | ≤ 200 #/100mL | May–Sep | 002 |
| Coliform, fecal general | 30-day geometric mean | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 002 |
| Coliform, fecal general | 7-day geometric mean | ≤ 400 #/100mL | May–Sep | 002 |
| Coliform, fecal general | 7-day geometric mean | ≤ 2000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 002 |
| Overflows | monthly total | report only (occur/mo) | all year | 002 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (gal) | all year | 002 |
| Whole effluent toxicity - retest #1 | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole effluent toxicity - retest #2 | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| WET, sublethal retest #1 | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| WET, sublethal retest #2 | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole Effluent Toxicity - Retest #3 | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole Effluent Toxicity, Sub-Lethal Retest #3 | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 48-hour minimum | report only (%) | all year | TX2 |
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 48-hour minimum | report only (%) | all year | TX2 |
| Coef Of Var Static Renewal 48Hr Acute D. pulex | 48-hour minimum | report only (%) | all year | TX2 |
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | 48-hour minimum | report only (%) | all year | TX2 |
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/AR0021971 · MCP: https://passage-data.com/mcp