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Sewage treatment plant, major discharger, Dermott, Arkansas. NPDES permit AR0022250 expired Jan 31, 2026; its limits still apply. Last 12 months: over a limit 24 times (last August 2026), 81 required values missing, 12 of 15 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Chlorine, total residual, instantaneous maximum | 1.3 mg/L | ≤ .033 mg/L | 3839% |
| October 2025 | Oxygen, dissolved [DO], instantaneous minimum | 2.4 mg/L | ≥ 6 mg/L | 60% |
| December 2025 | Chlorine, total residual, instantaneous maximum | 4.4 mg/L | ≤ .07 mg/L | 6186% |
| December 2025 | Oxygen, dissolved [DO], instantaneous minimum | < 1 mg/L | ≥ 2 mg/L | — |
| May 2026 | BOD, carbonaceous [5 day, 20 C], 7-day average | 58.6 mg/L | ≤ 40 mg/L | 47% |
| May 2026 | BOD, carbonaceous [5 day, 20 C], 7-day average | 58.6 mg/L | ≤ 40 mg/L | 47% |
| May 2026 | Coliform, fecal general, 7-day average | > 2420 #/100mL | ≤ 400 #/100mL | — |
| May 2026 | Coliform, fecal general, 7-day average | > 2420 #/100mL | ≤ 400 #/100mL | — |
| May 2026 | Nitrogen, ammonia total [as N], 7-day average | 6.1 mg/L | ≤ 4.5 mg/L | 36% |
| May 2026 | Nitrogen, ammonia total [as N], 7-day average | 6.1 mg/L | ≤ 4.5 mg/L | 36% |
| May 2026 | Oxygen, dissolved [DO], instantaneous minimum | 1.2 mg/L | ≥ 6 mg/L | 80% |
| May 2026 | Oxygen, dissolved [DO], instantaneous minimum | 1.2 mg/L | ≥ 6 mg/L | 80% |
| May 2026 | pH, maximum | 9.3 SU | ≤ 9 SU | — |
| June 2026 | Coliform, fecal general, 7-day average | > 2420 #/100mL | ≤ 400 #/100mL | — |
| June 2026 | Coliform, fecal general, monthly average | 1058 #/100mL | ≤ 200 #/100mL | 429% |
| June 2026 | Oxygen, dissolved [DO], instantaneous minimum | < 1 mg/L | ≥ 6 mg/L | — |
| July 2026 | Coliform, fecal general, 7-day average | > 2420 #/100mL | ≤ 400 #/100mL | — |
| July 2026 | Coliform, fecal general, monthly average | 418 #/100mL | ≤ 200 #/100mL | 109% |
| July 2026 | Oxygen, dissolved [DO], instantaneous minimum | < 1 mg/L | ≥ 6 mg/L | — |
| August 2026 | BOD, carbonaceous [5 day, 20 C], 7-day average | 44.9 mg/L | ≤ 40 mg/L | 12% |
| August 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 35.1 mg/L | ≤ 25 mg/L | 40% |
| August 2026 | Coliform, fecal general, 7-day average | > 2420 #/100mL | ≤ 400 #/100mL | — |
| August 2026 | Coliform, fecal general, monthly average | 1139 #/100mL | ≤ 200 #/100mL | 470% |
| August 2026 | Oxygen, dissolved [DO], instantaneous minimum | < 1 mg/L | ≥ 6 mg/L | — |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 mg/L | May–Oct | 002 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 2 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Nov, Dec | 002 |
| BOD, 5-day, 20 deg. C | 7-day average | ≤ 45 mg/L | Jan, Feb, Mar, Nov, Dec | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 300.2 lb/d | Jan, Feb, Mar, Nov, Dec | 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 |
| Solids, total suspended | monthly average | ≤ 900.7 lb/d | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 13.6 mg/L | Apr | 002 |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 4.5 mg/L | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 22.5 mg/L | Apr | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 30 lb/d | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 136.1 lb/d | Apr | 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 |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | 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 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 002 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 002 |
| Chloride [as Cl] | 7-day average | report only (mg/L) | all year | 002 |
| Chloride [as Cl] | monthly average | ≤ 530.8 lb/d | all year | 002 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 002 |
| Sulfate, total [as SO4] | 7-day average | report only (mg/L) | all year | 002 |
| Sulfate, total [as SO4] | monthly average | ≤ 410.6 lb/d | 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 | report only (MGD) | all year | 002 |
| Chlorine, total residual | instantaneous maximum | ≤ .033 mg/L | May–Oct | 002 |
| Chlorine, total residual | instantaneous maximum | ≤ .07 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved | 7-day average | report only (mg/L) | all year | 002 |
| Solids, total dissolved | monthly average | ≤ 3244.9 lb/d | all year | 002 |
| Mercury, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Mercury, total recoverable | 7-day average | report only (ug/L) | all year | 002 |
| Mercury, total recoverable | monthly average | report only (lb/d) | all year | 002 |
| Coliform, fecal general | monthly average | ≤ 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 average | ≤ 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 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Apr–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 40 mg/L | Apr–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 250.2 lb/d | Apr–Oct | 002 |
| Whole effluent toxicity - retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole effluent toxicity - retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| WET, sublethal retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| WET, sublethal retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole Effluent Toxicity - Retest #3 | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole Effluent Toxicity, Sub-Lethal Retest #3 | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX2 |
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX2 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX2 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX2 |
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX2 |
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 7-day 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/AR0022250 · MCP: https://passage-data.com/mcp