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GUAYABOTA

PWS ID: PR0005186 · YABUCOA, Puerto Rico 00767

GUAYABOTA serves 1,028 people in YABUCOA, Puerto Rico using Surface Water water sources. It has 891 recorded EPA violations, including 181 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: GUAYABOTA

GUAYABOTA is a local-owned community water system that delivers drinking water to 1,028 residents in YABUCOA, Puerto Rico (Yabucoa Municipio County) through 385 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 891 total violations for this system , of which 181 (20%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 648 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 142 violations (TT, health-based). 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. GUAYABOTA's 891 violations sit above 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
1,028
Total Violations
891
Health-Based Violations
181
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
385
County
Yabucoa Municipio
School/Daycare
No
MCL Violations
6
Monitoring Violations
648
Treatment Tech Violations
175

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule TT 142 2005
Surface Water Treatment Rule MR 119 2020
Long Term 2 Enhanced Surface Water Treatment Rule TT 30 2018
1,2-DIBROMO-3-CHLOROPROPANE MR 15 2013
2,4,5-TP MR 15 2013
2,4-D MR 15 2013
Atrazine MR 15 2013
Carbofuran MR 15 2013
Di(2-ethylhexyl) adipate MR 15 2013
Dinoseb MR 15 2013
Diquat MR 15 2013
Endrin MR 15 2013
Glyphosate MR 15 2013
Heptachlor MR 15 2013
HEXACHLOROBENZENE MR 15 2013
Methoxychlor MR 15 2013
OXAMYL MR 15 2013
Picloram MR 15 2013
Simazine MR 15 2013
Total Polychlorinated Biphenyls (PCB) MR 15 2013
BHC-GAMMA MR 15 2013
Endothall MR 15 2013
Heptachlor epoxide MR 15 2013
Benzo(a)pyrene MR 15 2013
ETHYLENE DIBROMIDE MR 15 2013
Chlordane MR 15 2013
Dalapon MR 15 2013
Hexachlorocyclopentadiene MR 15 2013
Toxaphene MR 15 2013
Pentachlorophenol MR 15 2013

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 GUAYABOTA.

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 PR0005186 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 / PR0005186 / 7000
2020 Surface Water Treatment Rule MR 119 SDWIS / PR0005186 / 0200
2019 Lead and Copper Rule MR 8 SDWIS / PR0005186 / 5000
2018 Long Term 2 Enhanced Surface Water Treatment Rule TT 30 SDWIS / PR0005186 / 0800
2018 Nitrate MR 6 SDWIS / PR0005186 / 1040
2018 E. COLI MR 3 SDWIS / PR0005186 / 3014
2018 Public Notice Other 3 SDWIS / PR0005186 / 7500
2016 TTHM MR 5 SDWIS / PR0005186 / 2950
2016 Total Haloacetic Acids (HAA5) MR 4 SDWIS / PR0005186 / 2456
2013 1,2-DIBROMO-3-CHLOROPROPANE MR 15 SDWIS / PR0005186 / 2931
2013 2,4,5-TP MR 15 SDWIS / PR0005186 / 2110
2013 2,4-D MR 15 SDWIS / PR0005186 / 2105
2013 Atrazine MR 15 SDWIS / PR0005186 / 2050
2013 Carbofuran MR 15 SDWIS / PR0005186 / 2046
2013 Di(2-ethylhexyl) adipate MR 15 SDWIS / PR0005186 / 2035

How GUAYABOTA Compares

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

Metric GUAYABOTA Puerto Rico avg Federal benchmark
Total violations 891 358.4 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 181 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 1,028 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 GUAYABOTA water safe to drink? ▼
GUAYABOTA (PWS ID: PR0005186) has 891 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,028 people using Surface Water sources.
How many people does GUAYABOTA serve? ▼
GUAYABOTA serves 1,028 people in YABUCOA, Puerto Rico. It is a Local-owned system using Surface Water water sources with 385 service connections.
What type of violations does GUAYABOTA have? ▼
GUAYABOTA has 891 total violations: 181 health-based violations (MCL exceedances or treatment failures), 648 monitoring/reporting violations, and 175 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in GUAYABOTA water? ▼
No PFAS testing data is available for GUAYABOTA under the EPA's UCMR5 monitoring program.
What water source does GUAYABOTA use? ▼
GUAYABOTA 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. This data is provided for informational purposes only.

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

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