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SAN SEBASTIAN

PR — Community Water System — PWSID: PR0003303

System Information

PWSIDPR0003303
System NameSAN SEBASTIAN
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region02
Serves SchoolNo
WholesalerNo
First ReportedMar 1, 1980
Last ReportedDec 23, 2025

Location & Contact

StatePR
CitySAN SEBASTIAN
ZIP Code00685
AddressCARR. 449 TO THE END
OrganizationSAN SEBASTIAN
Phone787-620-2277

Population & Service

Population Served24,449
Service Connections9,157

Drinking Water Violations (232)

This water system has 232 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Jul 1, 2020 — Consumer Confidence Rule Other No No — — — Resolved Jul 31, 2020 Consumer Confidence Rule
Apr 1, 2020 Jun 30, 2020 Total Haloacetic Acids (HAA5) MCL Yes No .062 MG/L 0.060 mg/L .06 Resolved Jun 30, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2020 Jun 30, 2020 Total Haloacetic Acids (HAA5) MCL Yes No .062 MG/L 0.060 mg/L .06 Resolved Jun 30, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2020 Jun 30, 2020 Total Haloacetic Acids (HAA5) MCL Yes No .062 MG/L 0.060 mg/L .06 Resolved Jun 30, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 Total Haloacetic Acids (HAA5) MCL Yes No .079 MG/L 0.060 mg/L .06 Resolved Dec 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 — Consumer Confidence Rule Other No No — — — Resolved Aug 13, 2019 Consumer Confidence Rule
Oct 1, 2018 — Consumer Confidence Rule Other No No — — — Resolved Aug 13, 2019 Consumer Confidence Rule
Oct 1, 2018 Dec 31, 2018 Total Haloacetic Acids (HAA5) MCL Yes No .079 MG/L 0.060 mg/L .06 Resolved Dec 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2018 Apr 30, 2018 Cryptosporidium MR No No — — — Resolved Apr 30, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Apr 1, 2018 Jun 30, 2018 Total Haloacetic Acids (HAA5) MCL Yes No .088 MG/L 0.060 mg/L .06 Resolved Jun 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2018 Jun 30, 2018 Total Haloacetic Acids (HAA5) MCL Yes No .088 MG/L 0.060 mg/L .06 Resolved Jun 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2018 Apr 30, 2018 Turbidity MR No No — TT — Resolved Apr 30, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Apr 1, 2018 Apr 30, 2018 E. COLI MR No No — — — Resolved Apr 30, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Apr 1, 2018 Apr 30, 2018 Cryptosporidium MR No No — — — Resolved Apr 30, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Apr 1, 2018 Apr 30, 2018 E. COLI MR No No — — — Resolved Apr 30, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Apr 1, 2018 Apr 30, 2018 Turbidity MR No No — TT — Resolved Apr 30, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2018 Jan 31, 2018 Turbidity MR No No — TT — Resolved Jan 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2018 Jan 31, 2018 Turbidity MR No No — TT — Resolved Jan 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2018 Mar 31, 2018 Total Haloacetic Acids (HAA5) MCL Yes No .066 MG/L 0.060 mg/L .06 Resolved Mar 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2018 Jan 31, 2018 Turbidity MR No No — TT — Resolved Jan 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2018 Jan 31, 2018 Cryptosporidium MR No No — — — Resolved Jan 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2018 Mar 31, 2018 Total Haloacetic Acids (HAA5) MCL Yes No .066 MG/L 0.060 mg/L .06 Resolved Mar 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2018 Jan 31, 2018 E. COLI MR No No — — — Resolved Jan 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2018 Jan 31, 2018 Cryptosporidium MR No No — — — Resolved Jan 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2018 Jan 31, 2018 E. COLI MR No No — — — Resolved Jan 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2018 Jan 31, 2018 E. COLI MR No No — — — Resolved Jan 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2018 Jan 31, 2018 Cryptosporidium MR No No — — — Resolved Jan 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Jul 1, 2017 Jul 31, 2017 Cryptosporidium MR No Yes — — — Resolved Jul 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jul 1, 2017 Jul 31, 2017 E. COLI MR No Yes — — — Resolved Jul 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jul 1, 2017 Jul 31, 2017 E. COLI MR No Yes — — — Resolved Jul 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jul 1, 2017 Jul 31, 2017 Turbidity MR No Yes — TT — Resolved Jul 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jul 1, 2017 Jul 31, 2017 Cryptosporidium MR No Yes — — — Resolved Jul 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jul 1, 2017 Jul 31, 2017 Turbidity MR No Yes — TT — Resolved Jul 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jun 1, 2017 Jun 30, 2017 E. COLI MR No No — — — Resolved Jun 30, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jun 1, 2017 Jun 30, 2017 Cryptosporidium MR No No — — — Resolved Jun 30, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jun 1, 2017 Jun 30, 2017 Cryptosporidium MR No No — — — Resolved Jun 30, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jun 1, 2017 Jun 30, 2017 E. COLI MR No No — — — Resolved Jun 30, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jun 1, 2017 Jun 30, 2017 Turbidity MR No No — TT — Resolved Jun 30, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jun 1, 2017 Jun 30, 2017 Turbidity MR No No — TT — Resolved Jun 30, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
May 1, 2017 May 31, 2017 Cryptosporidium MR No Yes — — — Resolved May 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
May 1, 2017 May 31, 2017 Cryptosporidium MR No Yes — — — Resolved May 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
May 1, 2017 May 31, 2017 Turbidity MR No Yes — TT — Resolved May 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
May 1, 2017 May 31, 2017 E. COLI MR No Yes — — — Resolved May 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
May 1, 2017 May 31, 2017 E. COLI MR No Yes — — — Resolved May 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
May 1, 2017 May 31, 2017 Turbidity MR No Yes — TT — Resolved May 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2017 Feb 28, 2017 Turbidity MR No Yes — TT — Resolved Feb 28, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2017 Feb 28, 2017 Turbidity MR No Yes — TT — Resolved Feb 28, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2017 Feb 28, 2017 Cryptosporidium MR No Yes — — — Resolved Feb 28, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2017 Feb 28, 2017 E. COLI MR No Yes — — — Resolved Feb 28, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2017 Feb 28, 2017 E. COLI MR No Yes — — — Resolved Feb 28, 2017 Long Term 2 Enhanced Surface Water Treatment Rule

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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