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Chemical Preparations, Pearlington, Mississippi. NPDES permit MS0054127, in force until Dec 31, 2028. Last 12 months: over a limit once (last May 2026), 1 of 15 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| May 2026 | Solids, total suspended, daily maximum | 80 mg/L | ≤ 60 mg/L | 33% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 12.8 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 19.3 lb/d | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 12.8 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 25.7 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 24.2 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 161 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chemical Oxygen Demand [COD] | monthly average | report only (mg/L) | all year | 001 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 001 |
| Chemical Oxygen Demand [COD] | monthly average | report only (lb/d) | all year | 001 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (lb/d) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | quarterly maximum | ≤ 60 mg/L | all year | 002 |
| Oil & Grease | quarterly maximum | ≤ 15 mg/L | all year | 002 |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | quarterly maximum | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | quarterly average | report only (lb/d) | all year | 002 |
| Nitrogen, total [as N] | quarterly maximum | report only (lb/d) | all year | 002 |
| Flow, in conduit or thru treatment plant | quarterly maximum | report only (MGD) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | quarterly average | report only (mg/L) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | quarterly maximum | report only (mg/L) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | quarterly average | report only (lb/d) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | quarterly maximum | report only (lb/d) | all year | 002 |
| Chemical Oxygen Demand [COD] | quarterly average | report only (mg/L) | all year | 002 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (mg/L) | all year | 002 |
| Chemical Oxygen Demand [COD] | quarterly average | report only (lb/d) | all year | 002 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (lb/d) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | annual maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | annual average | report only (mg/L) | all year | 003 |
| Solids, total suspended | annual maximum | report only (mg/L) | all year | 003 |
| Oil & Grease | annual average | report only (mg/L) | all year | 003 |
| Oil & Grease | annual maximum | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | annual average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | annual maximum | report only (MGD) | all year | 003 |
Cited limits by parameter: Mississippi's rules and the federal ones.
Same industry: the 23 Chemicals and Allied Products permits in Mississippi.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MS0054127 · MCP: https://passage-data.com/mcp