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Community Water System · PWS PR0004584

Garzas

Adjuntas, Puerto Rico 00601 - drinking water served from surface water sources to 3,402 people, tracked in EPA SDWIS and UCMR5.

3,402
People served
145
EPA violations
6
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 145 drinking-water violations at Garzas, 4% of them health-based - below the Puerto Rico per-system average.

145
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
3,402
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Garzas

Garzas is a local-owned community water system that delivers drinking water to 3,402 residents in Adjuntas, Puerto Rico (Adjuntas Municipio County) through 1,274 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 145 total violations for this system , of which 6 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 135 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 10 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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. Statewide, 40 of 99 UCMR5-tested systems have reported PFAS detections (40.4%).

Garzas's 145 violations sit below the Puerto Rico average.

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
3,402
Total Violations
145
Health-Based Violations
6
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,274
County
Adjuntas Municipio
School/Daycare
No
MCL Violations
6
Monitoring Violations
135
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 10 2015
Coliform (TCR) MCL 4 2012
cis-1,2-Dichloroethylene MR 4 2014
Xylenes, Total MR 4 2014
o-Dichlorobenzene MR 4 2014
Vinyl chloride MR 4 2014
Carbon tetrachloride MR 4 2014
1,2-Dichloropropane MR 4 2014
1,1,2-Trichloroethane MR 4 2014
Tetrachloroethylene MR 4 2014
Benzene MR 4 2014
Styrene MR 4 2014
Consumer Confidence Rule Other 4 2020
DICHLOROMETHANE MR 4 2014
1,1-Dichloroethylene MR 4 2014
1,2-Dichloroethane MR 4 2014
CHLOROBENZENE MR 4 2014
Ethylbenzene MR 4 2014
Toluene MR 4 2014
trans-1,2-Dichloroethylene MR 4 2014
1,1,1-Trichloroethane MR 4 2014
p-Dichlorobenzene MR 4 2014
1,2,4-Trichlorobenzene MR 4 2014
Trichloroethylene MR 4 2014
Endothall MR 3 2005
Simazine MR 3 2013
Atrazine MR 3 2013
LASSO MR 3 2013
E. COLI MR 2 2019
Total Haloacetic Acids (HAA5) MCL 2 2018

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFDoA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 8/22/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 8/22/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 8/22/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 8/22/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 8/22/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 8/22/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 8/22/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 8/22/2023 <8.00 ppt 8.00 ppt Not Detected
PFUnA 8/22/2023 <2.00 ppt 2.00 ppt Not Detected
NFDHA 8/22/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 8/22/2023 <4.00 ppt 4.00 ppt Not Detected
PFMPA 8/22/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 8/22/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 5/17/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 5/17/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 5/17/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 5/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 5/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 5/17/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 5/17/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 5/17/2023 <3.00 ppt 3.00 ppt Not Detected
ADONA 5/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 5/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 5/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 5/17/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpA 5/17/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 5/17/2023 <20.00 ppt 20.00 ppt Not Detected
NMeFOSAA 5/17/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 5/17/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 5/17/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 5/17/2023 <8.00 ppt 8.00 ppt Not Detected
PFMPA 5/17/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeS 5/17/2023 <4.00 ppt 4.00 ppt Not Detected
HFPO-DA 5/17/2023 <5.00 ppt 5.00 ppt Not Detected

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 Garzas.

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 PR0004584 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
2020 Consumer Confidence Rule Other 4 SDWIS / PR0004584 / 7000
2019 E. COLI MR 2 SDWIS / PR0004584 / 3014
2018 Total Haloacetic Acids (HAA5) MCL 2 SDWIS / PR0004584 / 2456
2015 Lead and Copper Rule MR 10 SDWIS / PR0004584 / 5000
2014 cis-1,2-Dichloroethylene MR 4 SDWIS / PR0004584 / 2380
2014 Xylenes, Total MR 4 SDWIS / PR0004584 / 2955
2014 o-Dichlorobenzene MR 4 SDWIS / PR0004584 / 2968
2014 Vinyl chloride MR 4 SDWIS / PR0004584 / 2976
2014 Carbon tetrachloride MR 4 SDWIS / PR0004584 / 2982
2014 1,2-Dichloropropane MR 4 SDWIS / PR0004584 / 2983
2014 1,1,2-Trichloroethane MR 4 SDWIS / PR0004584 / 2985
2014 Tetrachloroethylene MR 4 SDWIS / PR0004584 / 2987
2014 Benzene MR 4 SDWIS / PR0004584 / 2990
2014 Styrene MR 4 SDWIS / PR0004584 / 2996
2014 DICHLOROMETHANE MR 4 SDWIS / PR0004584 / 2964

How Garzas Compares

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

Metric Garzas Puerto Rico avg Federal benchmark
Total violations 145 358.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 6 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 3,402 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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Garzas water safe to drink? ▼
Garzas (PWS ID: PR0004584) has 145 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,402 people using Surface Water sources.
How many people does Garzas serve? ▼
Garzas serves 3,402 people in Adjuntas, Puerto Rico. It is a Local-owned system using Surface Water water sources with 1,274 service connections.
What type of violations does Garzas have? ▼
Garzas has 145 total violations: 6 health-based violations (MCL exceedances or treatment failures), 135 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Garzas water? ▼
No. Garzas was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Garzas use? ▼
Garzas uses Surface Water 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.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

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

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.