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Water Supply, Rio Grande, Puerto Rico. NPDES permit PR0022471 expired Oct 31, 2024; its limits still apply. Last 12 months: no values over a limit, 2 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | ≤ 32.2 deg C | all year |
| Turbidity | daily maximum | ≤ 50 NTU | all year |
| Turbidity | daily maximum | ≤ 92 NTU | all year |
| Color [PT-CO units] | daily maximum | ≤ 15 col unit (pc) | all year |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 5 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 13 mg/L | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, settleable | daily maximum | report only (mL/L) | all year |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year |
| Cadmium, total [as Cd] | daily maximum | ≤ .16 ug/L | all year |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year |
| Copper, total [as Cu] | daily maximum | ≤ 4.9 ug/L | all year |
| Copper, total [as Cu] | daily maximum | ≤ 583.65 ug/L | all year |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .101 MGD | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Chlorine, total residual | daily maximum | ≤ 11 ug/L | all year |
| Ammonia & ammonium- total | daily maximum | report only (ug/L) | all year |
Cited limits by parameter: we hold no rule of Puerto Rico's own; the federal ones.
Same industry: the 108 Water Supply permits in Puerto Rico.
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Your permit document is the final word. As JSON: /api/v1/permits/PR0022471 · MCP: https://passage-data.com/mcp