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RAFAEL MATIAS

PWS ID: PR0003294 · SANTURCE, Puerto Rico 00916

RAFAEL MATIAS serves 235 people in SANTURCE, Puerto Rico using Groundwater water sources. It has 100 recorded EPA violations, including 8 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: RAFAEL MATIAS

RAFAEL MATIAS is a local-owned community water system that delivers drinking water to 235 residents in SANTURCE, Puerto Rico (Aguada Municipio County) through 88 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 100 total violations for this system , of which 8 (8%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 86 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 9 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Puerto Rico, EPA tracks 458 public water systems serving 3,328,141 people, with 164,144 cumulative violations and 34,657 health-based violations on record. About 100% of systems in the state carry at least one violation, and state-wide the average per system is 358.4 violations. RAFAEL MATIAS's 100 violations sit below the Puerto Rico average. Statewide, 40 of 99 UCMR5-tested systems have reported PFAS detections (40.4%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
235
Total Violations
100
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
88
County
Aguada Municipio
School/Daycare
No
MCL Violations
8
Monitoring Violations
86
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 9 2004
Coliform (TCR) MCL 8 2013
Consumer Confidence Rule Other 6 2022
Lead and Copper Rule MR 4 2016
Endrin MR 3 2014
Toxaphene MR 3 2014
Simazine MR 3 2014
Hexachlorocyclopentadiene MR 3 2014
Atrazine MR 3 2014
LASSO MR 3 2014
Heptachlor epoxide MR 3 2014
Total Polychlorinated Biphenyls (PCB) MR 3 2014
Methoxychlor MR 3 2014
Heptachlor MR 3 2014
HEXACHLOROBENZENE MR 3 2014
Chlordane MR 3 2014
BHC-GAMMA MR 3 2014
Diquat MR 2 2014
Glyphosate MR 2 2014
Di(2-ethylhexyl) adipate MR 2 2014
Di(2-ethylhexyl) phthalate MR 2 2014
Picloram MR 2 2014
Dinoseb MR 2 2014
Carbofuran MR 2 2014
2,4-D MR 2 2014
2,4,5-TP MR 2 2014
Benzo(a)pyrene MR 2 2014
Pentachlorophenol MR 2 2014
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2014
OXAMYL MR 2 2014

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for RAFAEL MATIAS.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID PR0003294 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Puerto Rico Drinking Water Authority

Puerto Rico's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find PR regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2022 Consumer Confidence Rule Other 6 SDWIS / PR0003294 / 7000
2016 Lead and Copper Rule MR 4 SDWIS / PR0003294 / 5000
2014 Endrin MR 3 SDWIS / PR0003294 / 2005
2014 Toxaphene MR 3 SDWIS / PR0003294 / 2020
2014 Simazine MR 3 SDWIS / PR0003294 / 2037
2014 Hexachlorocyclopentadiene MR 3 SDWIS / PR0003294 / 2042
2014 Atrazine MR 3 SDWIS / PR0003294 / 2050
2014 LASSO MR 3 SDWIS / PR0003294 / 2051
2014 Heptachlor epoxide MR 3 SDWIS / PR0003294 / 2067
2014 Total Polychlorinated Biphenyls (PCB) MR 3 SDWIS / PR0003294 / 2383
2014 Methoxychlor MR 3 SDWIS / PR0003294 / 2015
2014 Heptachlor MR 3 SDWIS / PR0003294 / 2065
2014 HEXACHLOROBENZENE MR 3 SDWIS / PR0003294 / 2274
2014 Chlordane MR 3 SDWIS / PR0003294 / 2959
2014 BHC-GAMMA MR 3 SDWIS / PR0003294 / 2010

How RAFAEL MATIAS Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric RAFAEL MATIAS Puerto Rico avg Federal benchmark
Total violations 100 358.4 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 8 75.7 Indicates a contaminant exceeded a federal MCL
PFAS detection None 40.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 235 7,267 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 458 regulated public water systems in Puerto Rico.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is RAFAEL MATIAS water safe to drink? ▼
RAFAEL MATIAS (PWS ID: PR0003294) has 100 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 235 people using Groundwater sources.
How many people does RAFAEL MATIAS serve? ▼
RAFAEL MATIAS serves 235 people in SANTURCE, Puerto Rico. It is a Local-owned system using Groundwater water sources with 88 service connections.
What type of violations does RAFAEL MATIAS have? ▼
RAFAEL MATIAS has 100 total violations: 8 health-based violations (MCL exceedances or treatment failures), 86 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in RAFAEL MATIAS water? ▼
No PFAS testing data is available for RAFAEL MATIAS under the EPA's UCMR5 monitoring program.
What water source does RAFAEL MATIAS use? ▼
RAFAEL MATIAS uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial