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Clay And Related Minerals, Bessemer, Alabama. NPDES permit AL0058971, in force until Aug 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | all year |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 8.5 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .9 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.35 mg/L | all year |
| Phosphorus, total [as P] | daily maximum | ≤ .3 mg/L | Apr–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 |
| Chlorine, total residual | monthly average | ≤ .011 mg/L | all year |
| Chlorine, total residual | daily maximum | ≤ .019 mg/L | all year |
| E. coli | monthly average | ≤ 548 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec |
| E. coli | monthly average | ≤ 126 #/100mL | May–Oct |
| E. coli | daily maximum | ≤ 2507 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec |
| E. coli | daily maximum | ≤ 298 #/100mL | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 3 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 4.5 mg/L | all year |
Cited limits by parameter: Alabama's rules and the federal ones.
Same industry: the 206 Mining and Quarrying of Nonmetallic Minerals permits in Alabama.
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On EPA ECHO: Facility report · DMR history
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