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Federal facility (Noncommercial Research Organizations), Batavia, Illinois. NPDES permit IL0026123, in force until Aug 31, 2030. Last 12 months: over a limit 2 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit |
|---|---|---|---|---|
| May 2026 | 001 | pH, monthly maximum | 9.13 SU | ≤ 9 SU |
| May 2026 | 002 | pH, monthly maximum | 9.15 SU | ≤ 9 SU |
| 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 | ≥ 6.5 SU | all year | 001 |
| pH | monthly maximum | ≤ 9 SU | 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 |
| Tritium, total | 30-day average | report only (uCi/mL) | all year | 001 |
| Tritium, total | daily maximum | report only (uCi/mL) | all year | 001 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 63 deg F | Jan, Feb, Mar, Dec | 002 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 93 deg F | Apr–Nov | 002 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 002 |
| pH | monthly maximum | ≤ 9 SU | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 002 |
| Tritium, total | 30-day average | report only (uCi/mL) | all year | 002 |
| Tritium, total | daily maximum | report only (uCi/mL) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 63 deg F | Jan, Feb, Mar, Dec | 003 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 93 deg F | Apr–Nov | 003 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 003 |
| pH | monthly maximum | ≤ 9 SU | all year | 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 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 003 |
| Tritium, total | 30-day average | report only (uCi/mL) | all year | 003 |
| Tritium, total | daily maximum | report only (uCi/mL) | all year | 003 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 63 deg F | Jan, Feb, Mar, Dec | 004 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 93 deg F | Apr–Nov | 004 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 004 |
| pH | monthly maximum | ≤ 9 SU | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Tritium, total | 30-day average | report only (uCi/mL) | all year | 004 |
| Tritium, total | daily maximum | report only (uCi/mL) | all year | 004 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 63 deg F | Jan, Feb, Mar, Dec | 005 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 93 deg F | Apr–Nov | 005 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 005 |
| pH | monthly maximum | ≤ 9 SU | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Tritium, total | 30-day average | report only (uCi/mL) | all year | 005 |
| Tritium, total | daily maximum | report only (uCi/mL) | all year | 005 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 63 deg F | Jan, Feb, Mar, Dec | 006 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 93 deg F | Apr–Nov | 006 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 006 |
| pH | monthly maximum | ≤ 9 SU | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Tritium, total | 30-day average | report only (uCi/mL) | all year | 006 |
| Tritium, total | daily maximum | report only (uCi/mL) | all year | 006 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 63 deg F | Jan, Feb, Mar, Dec | 007 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 93 deg F | Apr–Nov | 007 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 007 |
| pH | monthly maximum | ≤ 9 SU | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Tritium, total | 30-day average | report only (uCi/mL) | all year | 007 |
| Tritium, total | daily maximum | report only (uCi/mL) | all year | 007 |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 7 Engineering, Accounting, Research and Management Services permits in Illinois.
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On EPA ECHO: Facility report · DMR history
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