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Community Water System · PWS PR0604086

Bayamoncito

Aguas Buenas, Puerto Rico 00703 - drinking water served from groundwater sources to 536 people, tracked in EPA SDWIS and UCMR5.

536
People served
473
EPA violations
143
Health-based
Untested
UCMR5 result

The verdict

EPA records 473 drinking-water violations at Bayamoncito, 30% of them health-based - above the Puerto Rico per-system average.

473
Total EPA violations on record
30%
Health-based (MCL / treatment failure)
536
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Bayamoncito

Bayamoncito is a private-owned community water system that delivers drinking water to 536 residents in Aguas Buenas, Puerto Rico (Aguas Buenas Municipio County) through 200 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 473 total violations for this system , of which 143 (30%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 242 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 143 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%).

Bayamoncito's 473 violations sit above 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
536
Total Violations
473
Health-Based Violations
143
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
200
County
Aguas Buenas Municipio
School/Daycare
No
MCL Violations
136
Monitoring Violations
242
Treatment Tech Violations
7

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 143 2016
Coliform (TCR) MCL 134 2013
Surface Water Treatment Rule MR 99 2005
Surface Water Treatment Rule TT 5 1992
Revised Total Coliform Rule MCL 2 2017
Public Notice Other 2 2017
LEAD AND COPPER RULE REVISIONS TT 2 2024
LEAD AND COPPER RULE REVISIONS RPT 1 2024

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 Bayamoncito.

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 PR0604086 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
2024 LEAD AND COPPER RULE REVISIONS TT 2 SDWIS / PR0604086 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / PR0604086 / 5200
2017 Revised Total Coliform Rule MCL 2 SDWIS / PR0604086 / 8000
2017 Public Notice Other 2 SDWIS / PR0604086 / 7500
2016 Coliform (TCR) MR 143 SDWIS / PR0604086 / 3100
2013 Coliform (TCR) MCL 134 SDWIS / PR0604086 / 3100
2005 Surface Water Treatment Rule MR 99 SDWIS / PR0604086 / 0200
1992 Surface Water Treatment Rule TT 5 SDWIS / PR0604086 / 0200

How Bayamoncito Compares

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

Metric Bayamoncito Puerto Rico avg Federal benchmark
Total violations 473 358.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 143 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 536 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 Bayamoncito water safe to drink? ▼
Bayamoncito (PWS ID: PR0604086) has 473 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 536 people using Groundwater sources.
How many people does Bayamoncito serve? ▼
Bayamoncito serves 536 people in Aguas Buenas, Puerto Rico. It is a Private-owned system using Groundwater water sources with 200 service connections.
What type of violations does Bayamoncito have? ▼
Bayamoncito has 473 total violations: 143 health-based violations (MCL exceedances or treatment failures), 242 monitoring/reporting violations, and 7 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Bayamoncito water? ▼
No PFAS testing data is available for Bayamoncito under the EPA's UCMR5 monitoring program.
What water source does Bayamoncito use? ▼
Bayamoncito 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.
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.