San Sebastian, Puerto Rico Water Quality Report
Water quality data for 4 water systems serving 25,670 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (12)
75
Dec 1, 2024
2A
Dec 1, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
52
Jul 1, 2023
Resolved Violations (488)
3A
Sep 1, 2025 — Sep 30, 2025
3A
Aug 1, 2025 — Aug 31, 2025
3A
Jul 1, 2025 — Jul 31, 2025
3A
Jun 1, 2025 — Jun 30, 2025
3A
Jun 1, 2025 — Jun 30, 2025
+ 483 more resolved violations
Frequently Asked Questions
Is San Sebastian tap water safe to drink?
San Sebastian's water meets all EPA maximum contaminant levels. However, 0 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in San Sebastian tap water?
0 contaminants have been detected in San Sebastian's water supply across 4 water systems. See the full contaminant table above for details.
How can I improve my water quality in San Sebastian?
Install a water filter rated for the specific contaminants found in San Sebastian's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does San Sebastian have any water quality violations?
Yes, San Sebastian currently has 83 active violations. See the violations section above for details.