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Final NPDES Permit for Las Marias Water Treatment Plant in Puerto Rico

Below are EPA's National Pollutant Discharge Elimination System (NPDES) final permit and supporting documents for the Las Marias Water Treatment Plant in Las Marias, Puerto Rico.

Permit number: PR0026930
Public Notice Date: 4/17/2026
Public Notice Comment Period End Date: 5/18/2026
Permit Effective Date: 10/1/2026
Permit Expiration Date: 9/30/2031

Final Permit (pdf) (634.86 KB)
Fact Sheet (pdf) (1.76 MB)
Response to Comments (pdf) (246.15 KB)
Public Notice (pdf) (148.91 KB)