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Sewage treatment plant, Rector, Arkansas. NPDES permit AR0021911, in force until Nov 30, 2027. Last 12 months: over a limit 50 times (last August 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | BOD, carbonaceous [5 day, 20 C], 7-day average | 25.9 mg/L | ≤ 23 mg/L | 13% |
| October 2025 | BOD, carbonaceous [5 day, 20 C], monthly average | 23.4 mg/L | ≤ 15 mg/L | 56% |
| October 2025 | Nitrogen, ammonia total [as N], monthly average | 6.2 mg/L | ≤ 5 mg/L | 24% |
| October 2025 | Oxygen, dissolved [DO], instantaneous minimum | 2.31 mg/L | ≥ 3 mg/L | 23% |
| October 2025 | Solids, total suspended, 7-day average | 100 mg/L | ≤ 30 mg/L | 233% |
| October 2025 | Solids, total suspended, monthly average | 132.62 lb/d | ≤ 83.4 lb/d | 59% |
| October 2025 | Solids, total suspended, monthly average | 74 mg/L | ≤ 20 mg/L | 270% |
| November 2025 | BOD, carbonaceous [5 day, 20 C], monthly average | 17.5 mg/L | ≤ 15 mg/L | 17% |
| November 2025 | Oxygen, dissolved [DO], instantaneous minimum | 4.47 mg/L | ≥ 5 mg/L | 11% |
| November 2025 | Solids, total suspended, 7-day average | 60 mg/L | ≤ 30 mg/L | 100% |
| November 2025 | Solids, total suspended, monthly average | 122.05 lb/d | ≤ 83.4 lb/d | 46% |
| November 2025 | Solids, total suspended, monthly average | 51 mg/L | ≤ 20 mg/L | 155% |
| December 2025 | Chlorine, total residual, instantaneous maximum | .05 mg/L | ≤ .011 mg/L | 355% |
| December 2025 | Solids, total suspended, 7-day average | 46 mg/L | ≤ 30 mg/L | 53% |
| December 2025 | Solids, total suspended, monthly average | 39 mg/L | ≤ 20 mg/L | 95% |
| December 2025 | Solids, total suspended, monthly average | 96.92 lb/d | ≤ 83.4 lb/d | 16% |
| January 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 16 mg/L | ≤ 15 mg/L | 7% |
| January 2026 | Chlorine, total residual, instantaneous maximum | .04 mg/L | ≤ .011 mg/L | 264% |
| January 2026 | Oxygen, dissolved [DO], instantaneous minimum | 4.63 mg/L | ≥ 5 mg/L | 7% |
| February 2026 | BOD, carbonaceous [5 day, 20 C], 7-day average | 39.9 mg/L | ≤ 23 mg/L | 73% |
| February 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 32 mg/L | ≤ 15 mg/L | 113% |
| February 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 75.42 lb/d | ≤ 62.6 lb/d | 20% |
| February 2026 | Coliform, fecal general, 30-day geometric mean | > 1758 #/100mL | ≤ 1000 #/100mL | — |
| February 2026 | Coliform, fecal general, 7-day geometric mean | > 2000 #/100mL | ≤ 2000 #/100mL | — |
| February 2026 | Oxygen, dissolved [DO], instantaneous minimum | 3.39 mg/L | ≥ 5 mg/L | 32% |
| February 2026 | Solids, total suspended, 7-day average | 46 mg/L | ≤ 30 mg/L | 53% |
| February 2026 | Solids, total suspended, monthly average | 40.5 mg/L | ≤ 20 mg/L | 103% |
| February 2026 | Solids, total suspended, monthly average | 88.01 lb/d | ≤ 83.4 lb/d | 6% |
| March 2026 | Chlorine, total residual, instantaneous maximum | .19 mg/L | ≤ .011 mg/L | 1627% |
| March 2026 | Oxygen, dissolved [DO], instantaneous minimum | 2.41 mg/L | ≥ 5 mg/L | 52% |
| April 2026 | Oxygen, dissolved [DO], instantaneous minimum | 2.63 mg/L | ≥ 5 mg/L | 47% |
| April 2026 | Solids, total suspended, monthly average | 26.5 mg/L | ≤ 20 mg/L | 33% |
| May 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 20.7 mg/L | ≤ 15 mg/L | 38% |
| May 2026 | Chlorine, total residual, instantaneous maximum | .22 mg/L | ≤ .011 mg/L | 1900% |
| May 2026 | Oxygen, dissolved [DO], instantaneous minimum | 2.39 mg/L | ≥ 3 mg/L | 20% |
| May 2026 | Solids, total suspended, 7-day average | 60 mg/L | ≤ 30 mg/L | 100% |
| May 2026 | Solids, total suspended, monthly average | 43 mg/L | ≤ 20 mg/L | 115% |
| May 2026 | Solids, total suspended, monthly average | 85.16 lb/d | ≤ 83.4 lb/d | 2% |
| June 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 16.5 mg/L | ≤ 15 mg/L | 10% |
| June 2026 | Chlorine, total residual, instantaneous maximum | .2 mg/L | ≤ .011 mg/L | 1718% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 6.1 mg/L | ≤ 5 mg/L | 22% |
| June 2026 | Oxygen, dissolved [DO], instantaneous minimum | 2.31 mg/L | ≥ 3 mg/L | 23% |
| June 2026 | Solids, total suspended, 7-day average | 64 mg/L | ≤ 30 mg/L | 113% |
| June 2026 | Solids, total suspended, monthly average | 58.5 mg/L | ≤ 20 mg/L | 193% |
| July 2026 | Chlorine, total residual, instantaneous maximum | .22 mg/L | ≤ .011 mg/L | 1900% |
| August 2026 | BOD, carbonaceous [5 day, 20 C], 7-day average | 35.8 mg/L | ≤ 23 mg/L | 56% |
| August 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 28.3 mg/L | ≤ 15 mg/L | 89% |
| August 2026 | Chlorine, total residual, instantaneous maximum | .45 mg/L | ≤ .011 mg/L | 3991% |
| August 2026 | Solids, total suspended, 7-day average | 45 mg/L | ≤ 30 mg/L | 50% |
| August 2026 | Solids, total suspended, monthly average | 33.5 mg/L | ≤ 20 mg/L | 68% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 3 mg/L | May–Oct |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year |
| Solids, total suspended | 7-day average | ≤ 30 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 83.4 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 12 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5.2 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 7.5 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 14.7 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 5.2 mg/L | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 20.9 lb/d | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 50 lb/d | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 21.7 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 |
| Chlorine, total residual | instantaneous maximum | ≤ .011 mg/L | 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 | ≤ 15 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 23 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 62.6 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
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