FRONTON
PWS ID: PR0003012 · CIALES, Puerto Rico 00638
FRONTON serves 2,862 people in CIALES, Puerto Rico using Surface Water water sources. It has 383 recorded EPA violations, including 162 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: FRONTON
FRONTON is a local-owned community water system that delivers drinking water to 2,862 residents in CIALES, Puerto Rico (Ciales Municipio County) through 1,072 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 383 total violations for this system , of which 162 (42%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 188 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 Surface Water Treatment Rule, recorded in 122 violations (TT, health-based). 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. FRONTON's 383 violations sit above 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.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,072
- County
- Ciales Municipio
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 188
- Treatment Tech Violations
- 159
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 122 | 2018 |
| Interim Enhanced Surface Water Treatment Rule | TT | 34 | 2006 |
| Lead and Copper Rule | MR | 20 | 2016 |
| Surface Water Treatment Rule | MR | 7 | 2019 |
| Consumer Confidence Rule | Other | 5 | 2022 |
| BHC-GAMMA | MR | 4 | 2018 |
| Methoxychlor | MR | 4 | 2018 |
| Toxaphene | MR | 4 | 2018 |
| Total Polychlorinated Biphenyls (PCB) | MR | 4 | 2018 |
| Heptachlor | MR | 4 | 2018 |
| Heptachlor epoxide | MR | 4 | 2018 |
| HEXACHLOROBENZENE | MR | 4 | 2018 |
| Endrin | MR | 4 | 2018 |
| Chlordane | MR | 4 | 2018 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2009 |
| cis-1,2-Dichloroethylene | MR | 3 | 2009 |
| Xylenes, Total | MR | 3 | 2009 |
| o-Dichlorobenzene | MR | 3 | 2009 |
| p-Dichlorobenzene | MR | 3 | 2009 |
| Vinyl chloride | MR | 3 | 2009 |
| trans-1,2-Dichloroethylene | MR | 3 | 2009 |
| 1,1,1-Trichloroethane | MR | 3 | 2009 |
| Carbon tetrachloride | MR | 3 | 2009 |
| 1,2-Dichloropropane | MR | 3 | 2009 |
| Trichloroethylene | MR | 3 | 2009 |
| 1,1,2-Trichloroethane | MR | 3 | 2009 |
| CHLOROBENZENE | MR | 3 | 2009 |
| Toluene | MR | 3 | 2009 |
| Ethylbenzene | MR | 3 | 2009 |
| DICHLOROMETHANE | MR | 3 | 2009 |
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 FRONTON.
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 PR0003012 on SDWISSource: EPA SDWIS Federal Reports Search
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 SDWISViolation 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 | 5 | SDWIS / PR0003012 / 7000 |
| 2019 | Surface Water Treatment Rule | MR | 7 | SDWIS / PR0003012 / 0200 |
| 2019 | Revised Total Coliform Rule | MON | 2 | SDWIS / PR0003012 / 8000 |
| 2018 | Surface Water Treatment Rule | TT | 122 | SDWIS / PR0003012 / 0200 |
| 2018 | BHC-GAMMA | MR | 4 | SDWIS / PR0003012 / 2010 |
| 2018 | Methoxychlor | MR | 4 | SDWIS / PR0003012 / 2015 |
| 2018 | Toxaphene | MR | 4 | SDWIS / PR0003012 / 2020 |
| 2018 | Total Polychlorinated Biphenyls (PCB) | MR | 4 | SDWIS / PR0003012 / 2383 |
| 2018 | Heptachlor | MR | 4 | SDWIS / PR0003012 / 2065 |
| 2018 | Heptachlor epoxide | MR | 4 | SDWIS / PR0003012 / 2067 |
| 2018 | HEXACHLOROBENZENE | MR | 4 | SDWIS / PR0003012 / 2274 |
| 2018 | Endrin | MR | 4 | SDWIS / PR0003012 / 2005 |
| 2018 | Chlordane | MR | 4 | SDWIS / PR0003012 / 2959 |
| 2018 | 1,2-DIBROMO-3-CHLOROPROPANE | MR | 3 | SDWIS / PR0003012 / 2931 |
| 2018 | ETHYLENE DIBROMIDE | MR | 3 | SDWIS / PR0003012 / 2946 |
How FRONTON Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | FRONTON | Puerto Rico avg | Federal benchmark |
|---|---|---|---|
| Total violations | 383 | 358.4 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 162 | 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 | 2,862 | 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
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Related Data for Puerto Rico
Read our methodology — how this data is sourced, computed, and verified.