AIBONITO URBANO

Q: Is AIBONITO URBANO water safe to drink?

AIBONITO URBANO (PWS ID: PR0004955) has 307 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 2 PFAS compounds found. This system serves 5,524 people using Surface Water sources.

Q: What type of violations does AIBONITO URBANO have?

AIBONITO URBANO has 307 total violations: 26 health-based violations (MCL exceedances or treatment failures), 277 monitoring/reporting violations, and 15 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Q: Has PFAS been detected in AIBONITO URBANO water?

Yes. UCMR5 testing detected 2 PFAS compounds in AIBONITO URBANO's water supply: PFOS, PFBS. PFAS are persistent "forever chemicals" that do not break down in the environment.

Q: What water source does AIBONITO URBANO use?

AIBONITO URBANO 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: PR0004955 · SANTURCE, Puerto Rico 00916

AIBONITO URBANO serves 5,524 people in SANTURCE, Puerto Rico using Surface Water water sources. It has 307 recorded EPA violations, including 26 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (2 compounds found).

Water Quality Snapshot: AIBONITO URBANO

AIBONITO URBANO is a local-owned community water system that delivers drinking water to 5,524 residents in SANTURCE, Puerto Rico (Aibonito Municipio County) through 2,069 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 307 total violations for this system , of which 26 (8%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 277 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Cryptosporidium, recorded in 24 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 2 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 0.0043 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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. AIBONITO URBANO's 307 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.

PFAS Detected

2 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served

5,524

Total Violations

307

Health-Based Violations

Water Source

Surface Water

System Details

System Type: Community
Owner Type: Local
Connections: 2,069
County: Aibonito Municipio
School/Daycare: No
MCL Violations: 11
Monitoring Violations: 277
Treatment Tech Violations: 15

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Cryptosporidium	MR	24	2017
CARBON, TOTAL	TT	15	2014
Lead and Copper Rule	MR	10	2016
E. COLI	MR	10	2018
TTHM	MCL	9	2020
Turbidity	MR	8	2017
Nitrate	MR	7	2022
OXAMYL	MR	7	2015
Carbofuran	MR	7	2015
Methoxychlor	MR	5	2014
Toxaphene	MR	5	2014
Dalapon	MR	5	2014
Di(2-ethylhexyl) adipate	MR	5	2014
Simazine	MR	5	2014
Hexachlorocyclopentadiene	MR	5	2014
Heptachlor	MR	5	2014
Pentachlorophenol	MR	5	2014
Endrin	MR	5	2014
BHC-GAMMA	MR	5	2014
Diquat	MR	5	2014
Endothall	MR	5	2014
Atrazine	MR	5	2014
LASSO	MR	5	2014
Heptachlor epoxide	MR	5	2014
2,4-D	MR	5	2014
HEXACHLOROBENZENE	MR	5	2014
Chlordane	MR	5	2014
ETHYLENE DIBROMIDE	MR	5	2014
Dinoseb	MR	5	2014
1,2-DIBROMO-3-CHLOROPROPANE	MR	5	2014

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 3 of 240 samples detected PFAS.

Contaminant	Date	Result	MRL	Status
NMeFOSAA	9/25/2023	<0.006 µg/L	0.006 µg/L	Not Detected
NEtFOSAA	9/25/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFDoA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFTrDA	9/25/2023	<0.007 µg/L	0.007 µg/L	Not Detected
PFTA	9/25/2023	<0.008 µg/L	0.008 µg/L	Not Detected
PFMPA	9/25/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpS	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeS	9/25/2023	<0.004 µg/L	0.004 µg/L	Not Detected
NFDHA	9/25/2023	<0.02 µg/L	0.02 µg/L	Not Detected
PFEESA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFMBA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFDA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFOA	9/25/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFOS	9/25/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFNA	9/25/2023	<0.004 µg/L	0.004 µg/L	Not Detected
lithium	9/25/2023	<9 µg/L	9 µg/L	Not Detected
8:2 FTS	9/25/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFHxS	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFBS	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFUnA	9/25/2023	<0.002 µg/L	0.002 µg/L	Not Detected
11Cl-PF3OUdS	9/25/2023	<0.005 µg/L	0.005 µg/L	Not Detected
9Cl-PF3ONS	9/25/2023	<0.002 µg/L	0.002 µg/L	Not Detected
ADONA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
HFPO-DA	9/25/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFBA	9/25/2023	<0.005 µg/L	0.005 µg/L	Not Detected
6:2 FTS	9/25/2023	<0.005 µg/L	0.005 µg/L	Not Detected
4:2 FTS	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFMBA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
NFDHA	9/25/2023	<0.02 µg/L	0.02 µg/L	Not Detected
PFPeS	9/25/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpS	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFOS	9/25/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFTrDA	9/25/2023	<0.007 µg/L	0.007 µg/L	Not Detected
PFTA	9/25/2023	<0.008 µg/L	0.008 µg/L	Not Detected
PFMPA	9/25/2023	<0.004 µg/L	0.004 µg/L	Not Detected
HFPO-DA	9/25/2023	<0.005 µg/L	0.005 µg/L	Not Detected
NEtFOSAA	9/25/2023	<0.005 µg/L	0.005 µg/L	Not Detected
NMeFOSAA	9/25/2023	<0.006 µg/L	0.006 µg/L	Not Detected
PFNA	9/25/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFUnA	9/25/2023	<0.002 µg/L	0.002 µg/L	Not Detected
PFBS	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxS	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	9/25/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxA	9/25/2023	<0.003 µg/L	0.003 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 AIBONITO URBANO.

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 PR0004955 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
2025	Surface Water Treatment Rule	MR	1	SDWIS / PR0004955 / 0200
2022	Nitrate	MR	7	SDWIS / PR0004955 / 1040
2022	Arsenic	MR	2	SDWIS / PR0004955 / 1005
2022	Barium	MR	2	SDWIS / PR0004955 / 1010
2022	Cadmium	MR	2	SDWIS / PR0004955 / 1015
2022	Chromium	MR	2	SDWIS / PR0004955 / 1020
2022	Antimony, Total	MR	2	SDWIS / PR0004955 / 1074
2022	Beryllium, Total	MR	2	SDWIS / PR0004955 / 1075
2022	Selenium	MR	2	SDWIS / PR0004955 / 1045
2022	Mercury	MR	2	SDWIS / PR0004955 / 1035
2022	CYANIDE	MR	2	SDWIS / PR0004955 / 1024
2022	Thallium, Total	MR	2	SDWIS / PR0004955 / 1085
2021	Xylenes, Total	MR	2	SDWIS / PR0004955 / 2955
2021	DICHLOROMETHANE	MR	2	SDWIS / PR0004955 / 2964
2021	o-Dichlorobenzene	MR	2	SDWIS / PR0004955 / 2968

How AIBONITO URBANO Compares

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

Metric	AIBONITO URBANO	Puerto Rico avg	Federal benchmark
Total violations	307	358.4	SDWA compliance — any non-zero count is a recorded breach
Health-based violations	26	75.7	Indicates a contaminant exceeded a federal MCL
PFAS detection	2 compounds	40.4%	EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served	5,524	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 AIBONITO URBANO water safe to drink? ▼

AIBONITO URBANO (PWS ID: PR0004955) has 307 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 2 PFAS compounds found. This system serves 5,524 people using Surface Water sources.

How many people does AIBONITO URBANO serve? ▼

AIBONITO URBANO serves 5,524 people in SANTURCE, Puerto Rico. It is a Local-owned system using Surface Water water sources with 2,069 service connections.

What type of violations does AIBONITO URBANO have? ▼

AIBONITO URBANO has 307 total violations: 26 health-based violations (MCL exceedances or treatment failures), 277 monitoring/reporting violations, and 15 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in AIBONITO URBANO water? ▼

Yes. UCMR5 testing detected 2 PFAS compounds in AIBONITO URBANO's water supply: PFOS, PFBS. PFAS are persistent "forever chemicals" that do not break down in the environment.

What water source does AIBONITO URBANO use? ▼

AIBONITO URBANO 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.

Explore PlainWater

Water in Puerto Rico

All systems in state

All States

Water quality by state

Contaminants

PFAS & other pollutants

Guides

Understanding water quality

Related Data for Puerto Rico

Environmental Data → Natural Hazards → Air Quality → Healthcare Access → Climate Data →

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.

Browse all → | Rankings →

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