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Sewage treatment plant, Bonanza, Arkansas. NPDES permit AR0051080, in force until Dec 31, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 2 mg/L | Jan, Feb, Mar, Nov, Dec |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | Apr–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 | ≤ 13.3 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4 mg/L | May, Jun |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5.6 mg/L | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4 mg/L | Jul–Oct |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 5.6 mg/L | May, Jun |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 15 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 5.6 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 6 mg/L | Jul–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 lb/d | May, Jun |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.7 lb/d | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.7 lb/d | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 lb/d | Jul–Oct |
| 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 |
| E. coli | 30-day geometric mean | ≤ 630 #/100mL | all year |
| E. coli | 7-day geometric mean | ≤ 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] | 7-day average | ≤ 23 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 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/AR0051080 · MCP: https://passage-data.com/mcp