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CIMARRONA

PWS ID: PR0004765 · GUAYAMA, Puerto Rico 00784

CIMARRONA serves 1,976 people in GUAYAMA, Puerto Rico using Groundwater water sources. It has 63 recorded EPA violations, including 3 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: CIMARRONA

CIMARRONA is a local-owned community water system that delivers drinking water to 1,976 residents in GUAYAMA, Puerto Rico (Guayama Municipio County) through 740 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 63 total violations for this system , of which 3 (5%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 53 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 Fluoride, recorded in 3 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. CIMARRONA's 63 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
1,976
Total Violations
63
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
740
County
Guayama Municipio
School/Daycare
No
MCL Violations
3
Monitoring Violations
53
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Fluoride MR 3 2005
Coliform (TCR) MCL 3 2006
Endrin MR 3 2010
Toxaphene MR 3 2010
Heptachlor MR 3 2010
Heptachlor epoxide MR 3 2010
HEXACHLOROBENZENE MR 3 2010
Total Polychlorinated Biphenyls (PCB) MR 3 2010
Chlordane MR 3 2010
Consumer Confidence Rule Other 3 2022
Methoxychlor MR 3 2010
BHC-GAMMA MR 3 2010
Coliform (TCR) MR 2 2003
Lead and Copper Rule MR 2 2012
TTHM MR 2 2014
Benzo(a)pyrene MR 2 2014
Di(2-ethylhexyl) adipate MR 2 2014
Di(2-ethylhexyl) phthalate MR 2 2014
Total Haloacetic Acids (HAA5) MR 2 2014
Mercury MR 1 1984
Selenium MR 1 1984
Cadmium MR 1 1984
Chromium MR 1 1984
Nitrate MR 1 1984
Barium MR 1 1984
Arsenic MR 1 1984
Combined Radium (-226 and -228) MR 1 1980
Gross Alpha, Excl. Radon and U MR 1 1980

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 CIMARRONA.

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 PR0004765 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 3 SDWIS / PR0004765 / 7000
2014 TTHM MR 2 SDWIS / PR0004765 / 2950
2014 Benzo(a)pyrene MR 2 SDWIS / PR0004765 / 2306
2014 Di(2-ethylhexyl) adipate MR 2 SDWIS / PR0004765 / 2035
2014 Di(2-ethylhexyl) phthalate MR 2 SDWIS / PR0004765 / 2039
2014 Total Haloacetic Acids (HAA5) MR 2 SDWIS / PR0004765 / 2456
2012 Lead and Copper Rule MR 2 SDWIS / PR0004765 / 5000
2010 Endrin MR 3 SDWIS / PR0004765 / 2005
2010 Toxaphene MR 3 SDWIS / PR0004765 / 2020
2010 Heptachlor MR 3 SDWIS / PR0004765 / 2065
2010 Heptachlor epoxide MR 3 SDWIS / PR0004765 / 2067
2010 HEXACHLOROBENZENE MR 3 SDWIS / PR0004765 / 2274
2010 Total Polychlorinated Biphenyls (PCB) MR 3 SDWIS / PR0004765 / 2383
2010 Chlordane MR 3 SDWIS / PR0004765 / 2959
2010 Methoxychlor MR 3 SDWIS / PR0004765 / 2015

How CIMARRONA Compares

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

Metric CIMARRONA Puerto Rico avg Federal benchmark
Total violations 63 358.4 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 3 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 1,976 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 CIMARRONA water safe to drink? ▼
CIMARRONA (PWS ID: PR0004765) has 63 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,976 people using Groundwater sources.
How many people does CIMARRONA serve? ▼
CIMARRONA serves 1,976 people in GUAYAMA, Puerto Rico. It is a Local-owned system using Groundwater water sources with 740 service connections.
What type of violations does CIMARRONA have? ▼
CIMARRONA has 63 total violations: 3 health-based violations (MCL exceedances or treatment failures), 53 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in CIMARRONA water? ▼
No PFAS testing data is available for CIMARRONA under the EPA's UCMR5 monitoring program.
What water source does CIMARRONA use? ▼
CIMARRONA 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