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Industrial or other facility, Unknown, Hawaii. NPDES permit HIS000556, in force until Jun 30, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Turbidity | daily maximum | ≤ 5 NTU (alert, not enforceable) | all year |
| pH | daily minimum | ≥ 7 SU (alert, not enforceable) | all year |
| pH | daily maximum | ≤ 8.6 SU (alert, not enforceable) | all year |
| Solids, total suspended | daily maximum | ≤ 100 mg/L (alert, not enforceable) | all year |
| Nitrogen, total [as N] | daily maximum | ≤ 500 ug/L (alert, not enforceable) | all year |
| Iron, total recoverable | daily maximum | ≤ 1 mg/L (alert, not enforceable) | all year |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ 110 ug/L (alert, not enforceable) | all year |
| Chromium, trivalent [as Cr] | daily maximum | ≤ 570 ug/L (alert, not enforceable) | all year |
| Nickel, total recoverable | daily maximum | ≤ 74 ug/L (alert, not enforceable) | all year |
| Zinc, total recoverable | daily maximum | ≤ 90 ug/L (alert, not enforceable) | all year |
| Aluminum, total recoverable | daily maximum | ≤ 750 ug/L (alert, not enforceable) | all year |
| Lead, total recoverable | daily maximum | ≤ 140 ug/L (alert, not enforceable) | all year |
| Copper, total recoverable | daily maximum | ≤ 2.9 ug/L (alert, not enforceable) | all year |
| Nitrogen, ammonia total [as NH4] | daily maximum | ≤ 20 ug/L (alert, not enforceable) | all year |
| Chemical Oxygen Demand [COD] | daily maximum | ≤ 120 mg/L (alert, not enforceable) | all year |
Cited limits by parameter: Hawaii's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/HIS000556 · MCP: https://passage-data.com/mcp