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Water Supply, Scottsdale, Arizona. NPDES permit AZ0026123, in force until Nov 28, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| pH | minimum | ≥ 6.5 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| pH | minimum | report only (SU) | all year |
| pH | maximum | report only (SU) | all year |
| pH | minimum | report only (SU) | all year |
| pH | maximum | report only (SU) | all year |
| Arsenic, total recoverable | monthly average | ≤ 10 ug/L | all year |
| Arsenic, total recoverable | daily maximum | ≤ 14 ug/L | all year |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year |
| Chromium, hexavalent dissolved [as Cr] | monthly average | report only (ug/L) | all year |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year |
| Chloroform | daily maximum | report only (ug/L) | all year |
| Tetrachloroethylene | monthly average | report only (ug/L) | all year |
| Tetrachloroethylene | daily maximum | ≤ 5 ug/L | all year |
| 1,1-Dichloroethylene | daily maximum | report only (ug/L) | all year |
| 1,1,1-Trichloroethane | daily maximum | report only (ug/L) | all year |
| Trichloroethylene | monthly average | report only (ug/L) | all year |
| Trichloroethylene | daily maximum | ≤ 5 ug/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 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (cfs) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (cfs) | all year |
Cited limits by parameter: Arizona's rules and the federal ones.
Same industry: the 9 Water Supply permits in Arizona.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/AZ0026123 · MCP: https://passage-data.com/mcp