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LA GRUA

PWS ID: PR0005496 · SANTURCE, Puerto Rico 00916

LA GRUA serves 3,527 people in SANTURCE, Puerto Rico using Groundwater water sources. It has 162 recorded EPA violations, including 5 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: LA GRUA

LA GRUA is a local-owned community water system that delivers drinking water to 3,527 residents in SANTURCE, Puerto Rico (Yabucoa Municipio County) through 1,321 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 162 total violations for this system , of which 5 (3%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 151 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 Lead and Copper Rule, recorded in 23 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. LA GRUA's 162 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
3,527
Total Violations
162
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,321
County
Yabucoa Municipio
School/Daycare
No
MCL Violations
5
Monitoring Violations
151
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 23 2019
Coliform (TCR) MCL 5 2010
Consumer Confidence Rule Other 4 2020
Nitrate MR 4 2014
1,2,4-Trichlorobenzene MR 3 2012
cis-1,2-Dichloroethylene MR 3 2012
DICHLOROMETHANE MR 3 2012
o-Dichlorobenzene MR 3 2012
p-Dichlorobenzene MR 3 2012
1,1-Dichloroethylene MR 3 2012
trans-1,2-Dichloroethylene MR 3 2012
Carbon tetrachloride MR 3 2012
1,2-Dichloropropane MR 3 2012
Trichloroethylene MR 3 2012
Tetrachloroethylene MR 3 2012
CHLOROBENZENE MR 3 2012
Benzene MR 3 2012
Toluene MR 3 2012
Styrene MR 3 2012
1,1,1-Trichloroethane MR 3 2012
Ethylbenzene MR 3 2012
Vinyl chloride MR 3 2012
1,1,2-Trichloroethane MR 3 2012
1,2-Dichloroethane MR 3 2012
Xylenes, Total MR 3 2012
BHC-GAMMA MR 2 2013
Toxaphene MR 2 2013
Endothall MR 2 2013
Di(2-ethylhexyl) adipate MR 2 2013
Carbofuran MR 2 2013

PFAS Testing Results (UCMR5)

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

Contaminant Date Result MRL Status
PFMBA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 9/25/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFEESA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/25/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 9/25/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 9/25/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 9/25/2024 <0.008 µg/L 0.008 µg/L Not Detected
lithium 9/25/2024 <9 µg/L 9 µg/L Not Detected
NMeFOSAA 9/25/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFOA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 9/25/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/25/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFDoA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 9/25/2024 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 9/25/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 9/25/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFPeA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 9/25/2024 <0.004 µg/L 0.004 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 LA GRUA.

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 PR0005496 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 Mercury MR 2 SDWIS / PR0005496 / 1035
2020 Consumer Confidence Rule Other 4 SDWIS / PR0005496 / 7000
2019 Lead and Copper Rule MR 23 SDWIS / PR0005496 / 5000
2014 Nitrate MR 4 SDWIS / PR0005496 / 1040
2013 BHC-GAMMA MR 2 SDWIS / PR0005496 / 2010
2013 Toxaphene MR 2 SDWIS / PR0005496 / 2020
2013 Endothall MR 2 SDWIS / PR0005496 / 2033
2013 Di(2-ethylhexyl) adipate MR 2 SDWIS / PR0005496 / 2035
2013 Carbofuran MR 2 SDWIS / PR0005496 / 2046
2013 2,4-D MR 2 SDWIS / PR0005496 / 2105
2013 Pentachlorophenol MR 2 SDWIS / PR0005496 / 2326
2013 Total Polychlorinated Biphenyls (PCB) MR 2 SDWIS / PR0005496 / 2383
2013 Simazine MR 2 SDWIS / PR0005496 / 2037
2013 Dinoseb MR 2 SDWIS / PR0005496 / 2041
2013 Heptachlor epoxide MR 2 SDWIS / PR0005496 / 2067

How LA GRUA Compares

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

Metric LA GRUA Puerto Rico avg Federal benchmark
Total violations 162 358.4 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 3,527 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 LA GRUA water safe to drink? ▼
LA GRUA (PWS ID: PR0005496) has 162 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,527 people using Groundwater sources.
How many people does LA GRUA serve? ▼
LA GRUA serves 3,527 people in SANTURCE, Puerto Rico. It is a Local-owned system using Groundwater water sources with 1,321 service connections.
What type of violations does LA GRUA have? ▼
LA GRUA has 162 total violations: 5 health-based violations (MCL exceedances or treatment failures), 151 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in LA GRUA water? ▼
No. LA GRUA was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does LA GRUA use? ▼
LA GRUA 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.

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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