Community Water System · PWS PR0004574

Tibes

Ponce, Puerto Rico 00731 - drinking water served from surface water sources to 134 people, tracked in EPA SDWIS and UCMR5.

Compiled by PlainWater Editorial, Drinking Water Quality Editorial Team · May 15, 2026

134
People served: 81
EPA violations: 5
Health-based: Untested
UCMR5 result

The verdict

EPA records 81 drinking-water violations at Tibes, 6% of them health-based - below the Puerto Rico per-system average.

81
Total EPA violations on record: 6%
Health-based (MCL / treatment failure): 134
People served by this system: N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Tibes

Tibes is a local-owned community water system that delivers drinking water to 134 residents in Ponce, Puerto Rico (Ponce Municipio County) through 50 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 81 total violations for this system , of which 5 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 71 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 9 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. Statewide, 40 of 99 UCMR5-tested systems have reported PFAS detections (40.4%).

Tibes's 81 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

134

Total Violations

Health-Based Violations

Water Source

Surface Water

System Details

System Type: Community
Owner Type: Local
Connections: 50
County: Ponce Municipio
School/Daycare: No
MCL Violations: 5
Monitoring Violations: 71
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Surface Water Treatment Rule	MR	9	2020
Lead and Copper Rule	MR	8	2016
Consumer Confidence Rule	Other	5	2022
Cryptosporidium	MR	4	2011
Total Haloacetic Acids (HAA5)	MCL	4	2015
cis-1,2-Dichloroethylene	MR	2	2005
1,1-Dichloroethylene	MR	2	2005
1,1,1-Trichloroethane	MR	2	2005
Tetrachloroethylene	MR	2	2005
Ethylbenzene	MR	2	2005
Styrene	MR	2	2005
Simazine	MR	2	2013
Atrazine	MR	2	2013
LASSO	MR	2	2013
1,2-Dichloroethane	MR	2	2005
Carbon tetrachloride	MR	2	2005
1,1,2-Trichloroethane	MR	2	2005
trans-1,2-Dichloroethylene	MR	2	2005
1,2,4-Trichlorobenzene	MR	2	2005
DICHLOROMETHANE	MR	2	2005
CHLOROBENZENE	MR	2	2005
Trichloroethylene	MR	2	2005
o-Dichlorobenzene	MR	2	2005
Toluene	MR	2	2005
E. COLI	MR	2	2019
p-Dichlorobenzene	MR	2	2005
1,2-Dichloropropane	MR	2	2005
Xylenes, Total	MR	2	2005
Benzene	MR	2	2005
Vinyl chloride	MR	2	2005

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 Tibes.

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 PR0004574 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	5	SDWIS / PR0004574 / 7000
2020	Surface Water Treatment Rule	MR	9	SDWIS / PR0004574 / 0200
2019	E. COLI	MR	2	SDWIS / PR0004574 / 3014
2016	Lead and Copper Rule	MR	8	SDWIS / PR0004574 / 5000
2015	Total Haloacetic Acids (HAA5)	MCL	4	SDWIS / PR0004574 / 2456
2013	Simazine	MR	2	SDWIS / PR0004574 / 2037
2013	Atrazine	MR	2	SDWIS / PR0004574 / 2050
2013	LASSO	MR	2	SDWIS / PR0004574 / 2051
2011	Cryptosporidium	MR	4	SDWIS / PR0004574 / 3015
2005	cis-1,2-Dichloroethylene	MR	2	SDWIS / PR0004574 / 2380
2005	1,1-Dichloroethylene	MR	2	SDWIS / PR0004574 / 2977
2005	1,1,1-Trichloroethane	MR	2	SDWIS / PR0004574 / 2981
2005	Tetrachloroethylene	MR	2	SDWIS / PR0004574 / 2987
2005	Ethylbenzene	MR	2	SDWIS / PR0004574 / 2992
2005	Styrene	MR	2	SDWIS / PR0004574 / 2996

How Tibes Compares

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

Metric	Tibes	Puerto Rico avg	Federal benchmark
Total violations	81	358.4	SDWA compliance, any non-zero count is a recorded breach
Health-based violations	5	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	134	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 Tibes water safe to drink? ▼

Tibes (PWS ID: PR0004574) has 81 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 134 people using Surface Water sources.

How many people does Tibes serve? ▼

Tibes serves 134 people in Ponce, Puerto Rico. It is a Local-owned system using Surface Water water sources with 50 service connections.

What type of violations does Tibes have? ▼

Tibes has 81 total violations: 5 health-based violations (MCL exceedances or treatment failures), 71 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in Tibes water? ▼

No PFAS testing data is available for Tibes under the EPA's UCMR5 monitoring program.

What water source does Tibes use? ▼

Tibes 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. 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.