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Water Supply, Perrysville, Indiana. NPDES permit IN0061972, in force until Oct 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| pH | quarterly minimum | ≥ 6 SU | Mar, Jun, Sep, Dec |
| pH | quarterly minimum | ≥ 6 SU | Mar, Jun, Sep, Dec |
| pH | quarterly maximum | ≤ 9 SU | Mar, Jun, Sep, Dec |
| pH | quarterly maximum | ≤ 9 SU | Mar, Jun, Sep, Dec |
| Solids, total suspended | quarterly average | ≤ 20 mg/L | Mar, Jun, Sep, Dec |
| Solids, total suspended | quarterly average | ≤ 20 mg/L | Mar, Jun, Sep, Dec |
| Solids, total suspended | quarterly maximum | ≤ 40 mg/L | Mar, Jun, Sep, Dec |
| Solids, total suspended | quarterly maximum | ≤ 40 mg/L | Mar, Jun, Sep, Dec |
| Iron, total recoverable | quarterly average | ≤ 1.8 mg/L | Mar, Jun, Sep, Dec |
| Iron, total recoverable | quarterly average | ≤ 1.8 mg/L | Mar, Jun, Sep, Dec |
| Iron, total recoverable | quarterly maximum | ≤ 4.1 mg/L | Mar, Jun, Sep, Dec |
| Iron, total recoverable | quarterly maximum | ≤ 4.1 mg/L | Mar, Jun, Sep, Dec |
| Flow, in conduit or thru treatment plant | quarterly average | report only (MGD) | Mar, Jun, Sep, Dec |
| Flow, in conduit or thru treatment plant | quarterly average | report only (MGD) | Mar, Jun, Sep, Dec |
| Flow, in conduit or thru treatment plant | quarterly maximum | report only (MGD) | Mar, Jun, Sep, Dec |
| Flow, in conduit or thru treatment plant | quarterly maximum | report only (MGD) | Mar, Jun, Sep, Dec |
| Chlorine, total residual | quarterly average | < .06 mg/L | Mar, Jun, Sep, Dec |
| Chlorine, total residual | quarterly average | < .06 mg/L | Mar, Jun, Sep, Dec |
| Chlorine, total residual | quarterly maximum | < .06 mg/L | Mar, Jun, Sep, Dec |
| Chlorine, total residual | quarterly maximum | < .06 mg/L | Mar, Jun, Sep, Dec |
| Flow, total | quarterly total | report only (Mgal/mo) | Mar, Jun, Sep, Dec |
| Flow, total | quarterly total | report only (Mgal/mo) | Mar, Jun, Sep, Dec |
Cited limits by parameter: Indiana's rules and the federal ones.
Same industry: the 95 Water Supply permits in Indiana.
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