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Inorganic Pigments, Quincy, Illinois. NPDES permit IL0038270, in force until Jun 30, 2030. Last 12 months: no values over a limit, 2 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 63 deg F | Jan, Feb, Mar, Dec | 001 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 93 deg F | Apr–Nov | 001 |
| pH | monthly minimum | ≥ 6 SU | all year | 001 |
| pH | monthly maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | 30-day average | report only (mg/L) | Jan, Apr, Jul, Oct | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | Jan, Apr, Jul, Oct | 001 |
| Iron, total [as Fe] | 30-day average | report only (mg/L) | Jan, Apr, Jul, Oct | 001 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | Jan, Apr, Jul, Oct | 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 |
| pH | monthly minimum | report only (SU) | Jan, Apr, Jul, Oct | 003 |
| pH | monthly maximum | report only (SU) | Jan, Apr, Jul, Oct | 003 |
| Solids, total suspended | 30-day average | report only (mg/L) | Jan, Apr, Jul, Oct | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | Jan, Apr, Jul, Oct | 003 |
| Iron, total [as Fe] | 30-day average | report only (mg/L) | Jan, Apr, Jul, Oct | 003 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | Jan, Apr, Jul, Oct | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 58 Chemicals and Allied Products permits in Illinois.
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