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Sewerage Systems, Alexander, Arkansas. NPDES permit AR0050181, in force until May 31, 2031. Last 12 months: over a limit 6 times (last January 2026), 2 required values missing, 9 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Copper, dissolved [as Cu], daily maximum | .588 lb/d | ≤ .012 lb/d | 4800% |
| November 2025 | Copper, dissolved [as Cu], monthly average | .588 lb/d | ≤ .006 lb/d | 9700% |
| December 2025 | Copper, dissolved [as Cu], daily maximum | .532 lb/d | ≤ .055 lb/d | 867% |
| December 2025 | Copper, dissolved [as Cu], monthly average | .532 lb/d | ≤ .028 lb/d | 1800% |
| January 2026 | Copper, dissolved [as Cu], daily maximum | .532 lb/d | ≤ .055 lb/d | 867% |
| January 2026 | Copper, dissolved [as Cu], monthly average | .532 lb/d | ≤ .028 lb/d | 1800% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Flow rate | monthly average | report only (%) | all year |
| Flow rate | daily maximum | report only (%) | all year |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 2 mg/L | all year |
| 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 | daily maximum | ≤ 30 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 10 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 15 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.1 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 15 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.1 mg/L | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 lb/d | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5 lb/d | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.1 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3 lb/d | May–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.5 lb/d | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.1 lb/d | Apr |
| Copper, total recoverable | monthly average | ≤ 12.2 ug/L | Jun–Nov |
| Copper, total recoverable | monthly average | ≤ 55.2 ug/L | Jan, Feb, Mar, Apr, May, Dec |
| Copper, total recoverable | daily maximum | ≤ 24.4 ug/L | Jun–Nov |
| Copper, total recoverable | daily maximum | ≤ 111 ug/L | Jan, Feb, Mar, Apr, May, Dec |
| Copper, total recoverable | monthly average | ≤ .0061 lb/d | Jun–Nov |
| Copper, total recoverable | monthly average | ≤ .028 lb/d | Jan, Feb, Mar, Apr, May, Dec |
| Copper, total recoverable | daily maximum | ≤ .012 lb/d | Jun–Nov |
| Copper, total recoverable | daily maximum | ≤ .055 lb/d | Jan, Feb, Mar, Apr, May, Dec |
| 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 |
| E. coli | monthly geometric mean | ≤ 630 #/100mL | all year |
| E. coli | daily maximum | ≤ 2050 #/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] | daily maximum | ≤ 23 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 7.5 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 11.3 lb/d | all year |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Copper, total recoverable, daily maximum | 90.7 ug/L (Jan, Feb, Mar, Apr, May, Dec) | tighter | — | — |
| Copper, total recoverable, daily maximum | 0.045 lb/d (Jan, Feb, Mar, Apr, May, Dec) | tighter | — | — |
| Copper, total recoverable, daily maximum | 20.4 ug/L (Jun–Nov) | tighter | 6.4 ug/L (3 values) | 0.314× |
| Copper, total recoverable, daily maximum | 0.01 lb/d (Jun–Nov) | tighter | 0.001 lb/d (3 values) | 0.1× |
| Copper, total recoverable, monthly average | 45.2 ug/L (Jan, Feb, Mar, Apr, May, Dec) | tighter | — | — |
| Copper, total recoverable, monthly average | 0.022 lb/d (Jan, Feb, Mar, Apr, May, Dec) | tighter | — | — |
| Copper, total recoverable, monthly average | 10.2 ug/L (Jun–Nov) | tighter | 6.4 ug/L (3 values) | 0.627× |
| Copper, total recoverable, monthly average | 0.0051 lb/d (Jun–Nov) | tighter | 0.001 lb/d (3 values) | 0.196× |
Cited limits by parameter: Arkansas's rules and the federal ones.
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