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JAGUAS POZAS

PWS ID: PR0003802 · CIALES, Puerto Rico 00638

JAGUAS POZAS serves 4,563 people in CIALES, Puerto Rico using Surface Water water sources. It has 146 recorded EPA violations, including 1 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: JAGUAS POZAS

JAGUAS POZAS is a local-owned community water system that delivers drinking water to 4,563 residents in CIALES, Puerto Rico (Ciales Municipio County) through 1,709 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 146 total violations for this system , of which 1 (1%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 141 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Surface Water Treatment Rule, recorded in 32 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. JAGUAS POZAS's 146 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
4,563
Total Violations
146
Health-Based Violations
1
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,709
County
Ciales Municipio
School/Daycare
No
MCL Violations
0
Monitoring Violations
141
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule MR 32 2023
TTHM MR 7 2018
Total Haloacetic Acids (HAA5) MR 7 2018
E. COLI MR 6 2019
Coliform (TCR) MR 4 2013
Lead and Copper Rule MR 4 2016
Consumer Confidence Rule Other 4 2020
Endrin MR 3 2010
Methoxychlor MR 3 2010
Toxaphene MR 3 2010
Simazine MR 3 2013
Atrazine MR 3 2013
LASSO MR 3 2013
Heptachlor MR 3 2010
Heptachlor epoxide MR 3 2010
HEXACHLOROBENZENE MR 3 2010
Chlordane MR 3 2010
Revised Total Coliform Rule MON 3 2019
BHC-GAMMA MR 3 2010
Total Polychlorinated Biphenyls (PCB) MR 3 2010
Glyphosate MR 2 2009
Endothall MR 2 2006
Nitrate MR 1 2005
Dalapon MR 1 2006
OXAMYL MR 1 2006
Di(2-ethylhexyl) phthalate MR 1 2006
Picloram MR 1 2006
Dinoseb MR 1 2006
Hexachlorocyclopentadiene MR 1 2006
2,4-D MR 1 2006

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFHpA 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 7/23/2024 <0.02 µg/L 0.02 µg/L Not Detected
6:2 FTS 7/23/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 7/23/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 7/23/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 7/23/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 7/23/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFPeS 7/23/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 7/23/2024 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 7/23/2024 <0.006 µg/L 0.006 µg/L Not Detected
lithium 7/23/2024 <9 µg/L 9 µg/L Not Detected
PFNA 7/23/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 7/23/2024 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 7/23/2024 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 7/23/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 7/23/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 7/23/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/23/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 7/23/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 4/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 4/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 4/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 4/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 4/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 4/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 4/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 4/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 4/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 4/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 4/22/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFOS 4/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
lithium 4/22/2024 <9 µg/L 9 µg/L Not Detected
NMeFOSAA 4/22/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFDoA 4/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 4/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 4/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 4/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 4/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 4/22/2024 <0.007 µg/L 0.007 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 JAGUAS POZAS.

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 PR0003802 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
2023 Surface Water Treatment Rule MR 32 SDWIS / PR0003802 / 0200
2020 Consumer Confidence Rule Other 4 SDWIS / PR0003802 / 7000
2019 E. COLI MR 6 SDWIS / PR0003802 / 3014
2019 Revised Total Coliform Rule MON 3 SDWIS / PR0003802 / 8000
2018 TTHM MR 7 SDWIS / PR0003802 / 2950
2018 Total Haloacetic Acids (HAA5) MR 7 SDWIS / PR0003802 / 2456
2016 Lead and Copper Rule MR 4 SDWIS / PR0003802 / 5000
2013 Coliform (TCR) MR 4 SDWIS / PR0003802 / 3100
2013 Simazine MR 3 SDWIS / PR0003802 / 2037
2013 Atrazine MR 3 SDWIS / PR0003802 / 2050
2013 LASSO MR 3 SDWIS / PR0003802 / 2051
2011 Cryptosporidium MR 1 SDWIS / PR0003802 / 3015
2010 Endrin MR 3 SDWIS / PR0003802 / 2005
2010 Methoxychlor MR 3 SDWIS / PR0003802 / 2015
2010 Toxaphene MR 3 SDWIS / PR0003802 / 2020

How JAGUAS POZAS Compares

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

Metric JAGUAS POZAS Puerto Rico avg Federal benchmark
Total violations 146 358.4 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 1 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 4,563 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 JAGUAS POZAS water safe to drink? ▼
JAGUAS POZAS (PWS ID: PR0003802) has 146 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 4,563 people using Surface Water sources.
How many people does JAGUAS POZAS serve? ▼
JAGUAS POZAS serves 4,563 people in CIALES, Puerto Rico. It is a Local-owned system using Surface Water water sources with 1,709 service connections.
What type of violations does JAGUAS POZAS have? ▼
JAGUAS POZAS has 146 total violations: 1 health-based violations (MCL exceedances or treatment failures), 141 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in JAGUAS POZAS water? ▼
No. JAGUAS POZAS was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does JAGUAS POZAS use? ▼
JAGUAS POZAS 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.

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