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Flat Glass, Warsaw, Indiana. NPDES permit IN0045578 expired Oct 31, 2026. Last 12 months: over a limit 14 times (last March 2026), 70 required values missing, 8 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Oil and grease, hexane extr method, daily maximum | 9.8 mg/L | ≤ 5 mg/L | 96% |
| October 2025 | Oil and grease, hexane extr method, daily maximum | 9.8 mg/L | ≤ 5 mg/L | 96% |
| November 2025 | Chlorine, total residual, daily maximum | 1.2 mg/L | < .06 mg/L | 1900% |
| November 2025 | Chlorine, total residual, daily maximum | 1.2 mg/L | < .06 mg/L | 1900% |
| November 2025 | Chlorine, total residual, monthly average | .57 mg/L | < .06 mg/L | 850% |
| November 2025 | Chlorine, total residual, monthly average | .57 mg/L | < .06 mg/L | 850% |
| November 2025 | Oil and grease, hexane extr method, daily maximum | 9.6 mg/L | ≤ 5 mg/L | 92% |
| November 2025 | Oil and grease, hexane extr method, daily maximum | 9.6 mg/L | ≤ 5 mg/L | 92% |
| December 2025 | Chlorine, total residual, daily maximum | .4 mg/L | < .06 mg/L | 567% |
| December 2025 | Chlorine, total residual, daily maximum | .4 mg/L | < .06 mg/L | 567% |
| December 2025 | Chlorine, total residual, monthly average | .21 mg/L | < .06 mg/L | 250% |
| December 2025 | Chlorine, total residual, monthly average | .21 mg/L | < .06 mg/L | 250% |
| March 2026 | Temperature, water deg. fahrenheit, daily maximum | 72.8 deg F | ≤ 68 deg F | 7% |
| March 2026 | Temperature, water deg. fahrenheit, daily maximum | 72.8 deg F | ≤ 68 deg F | 7% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | ≤ 67 deg F | Jan |
| Temperature, water deg. fahrenheit | monthly average | ≤ 68 deg F | Feb, Mar |
| Temperature, water deg. fahrenheit | monthly average | ≤ 74 deg F | Apr, Nov |
| Temperature, water deg. fahrenheit | monthly average | ≤ 80 deg F | May |
| Temperature, water deg. fahrenheit | monthly average | ≤ 90 deg F | Jun–Sep |
| Temperature, water deg. fahrenheit | monthly average | ≤ 79 deg F | Oct |
| Temperature, water deg. fahrenheit | monthly average | ≤ 71 deg F | Dec |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 67 deg F | Jan |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 68 deg F | Feb, Mar |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 74 deg F | Apr, Nov |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 80 deg F | May |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 90 deg F | Jun–Sep |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 79 deg F | Oct |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 71 deg F | Dec |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Oil and grease, hexane extr method | daily maximum | ≤ 5 mg/L | all year |
| 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 | < .06 mg/L | all year |
| Chlorine, total residual | daily maximum | < .06 mg/L | all year |
| Flow, total | monthly total | report only (Mgal/mo) | all year |
Cited limits by parameter: Indiana's rules and the federal ones.
Same industry: the 80 Stone, Clay, Glass and Concrete Products permits in Indiana.
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On EPA ECHO: Facility report · DMR history
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