GARZAS

Q: 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.

Q: 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.

Q: 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.

Q: 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.

Q: 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.

Q: 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.

Reviewed byPlainWater Editorial, Drinking Water Quality Editorial Team · June 4, 2026

PWS ID: PR0004584 · ADJUNTAS, Puerto Rico 00601

GARZAS serves 3,402 people in ADJUNTAS, Puerto Rico using Surface Water water sources. It has 145 recorded EPA violations, including 6 health-based violations. No PFAS contamination was detected in UCMR5 testing.

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. GARZAS's 145 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

3,402

Total Violations

145

Health-Based Violations

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 120 samples detected PFAS.

Contaminant	Date	Result	MRL	Status
PFDoA	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeA	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
8:2 FTS	8/22/2023	<0.005 µg/L	0.005 µg/L	Not Detected
4:2 FTS	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
6:2 FTS	8/22/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFBA	8/22/2023	<0.005 µg/L	0.005 µg/L	Not Detected
HFPO-DA	8/22/2023	<0.005 µg/L	0.005 µg/L	Not Detected
ADONA	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
9Cl-PF3ONS	8/22/2023	<0.002 µg/L	0.002 µg/L	Not Detected
11Cl-PF3OUdS	8/22/2023	<0.005 µg/L	0.005 µg/L	Not Detected
lithium	8/22/2023	<9 µg/L	9 µg/L	Not Detected
PFHxA	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFMBA	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFDA	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFOA	8/22/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFOS	8/22/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFNA	8/22/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHxS	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFBS	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
NMeFOSAA	8/22/2023	<0.006 µg/L	0.006 µg/L	Not Detected
NEtFOSAA	8/22/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFTrDA	8/22/2023	<0.007 µg/L	0.007 µg/L	Not Detected
PFTA	8/22/2023	<0.008 µg/L	0.008 µg/L	Not Detected
PFUnA	8/22/2023	<0.002 µg/L	0.002 µg/L	Not Detected
NFDHA	8/22/2023	<0.02 µg/L	0.02 µg/L	Not Detected
PFPeS	8/22/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFMPA	8/22/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpS	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	8/22/2023	<0.003 µg/L	0.003 µg/L	Not Detected
9Cl-PF3ONS	5/17/2023	<0.002 µg/L	0.002 µg/L	Not Detected
11Cl-PF3OUdS	5/17/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFUnA	5/17/2023	<0.002 µg/L	0.002 µg/L	Not Detected
PFHxA	5/17/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	5/17/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFOA	5/17/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFNA	5/17/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHxS	5/17/2023	<0.003 µg/L	0.003 µg/L	Not Detected
ADONA	5/17/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFBS	5/17/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFMBA	5/17/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFOS	5/17/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpA	5/17/2023	<0.003 µg/L	0.003 µg/L	Not Detected
NFDHA	5/17/2023	<0.02 µg/L	0.02 µg/L	Not Detected
NMeFOSAA	5/17/2023	<0.006 µg/L	0.006 µg/L	Not Detected
NEtFOSAA	5/17/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFTrDA	5/17/2023	<0.007 µg/L	0.007 µg/L	Not Detected
PFTA	5/17/2023	<0.008 µg/L	0.008 µg/L	Not Detected
lithium	5/17/2023	<9 µg/L	9 µg/L	Not Detected
PFMPA	5/17/2023	<0.004 µg/L	0.004 µg/L	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
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.

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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.

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