PlainWater
States → Puerto Rico

Community Water System · PWS PR0003822

Arraijanes

Morovis, Puerto Rico 00687 - drinking water served from groundwater sources to 198 people, tracked in EPA SDWIS and UCMR5.

198
People served
106
EPA violations
17
Health-based
Untested
UCMR5 result

The verdict

EPA records 106 drinking-water violations at Arraijanes, 16% of them health-based - below the Puerto Rico per-system average.

106
Total EPA violations on record
16%
Health-based (MCL / treatment failure)
198
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Arraijanes

Arraijanes is a local-owned community water system that delivers drinking water to 198 residents in Morovis, Puerto Rico (Morovis Municipio County) through 74 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 106 total violations for this system , of which 17 (16%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 81 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 31 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%).

Arraijanes's 106 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
198
Total Violations
106
Health-Based Violations
17
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
74
County
Morovis Municipio
School/Daycare
No
MCL Violations
17
Monitoring Violations
81
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 31 2015
Coliform (TCR) MCL 17 2005
TTHM MR 8 2006
Total Haloacetic Acids (HAA5) MR 7 2006
Consumer Confidence Rule Other 6 2022
Endrin MR 2 2010
BHC-GAMMA MR 2 2010
Heptachlor MR 2 2010
Heptachlor epoxide MR 2 2010
HEXACHLOROBENZENE MR 2 2010
Chlordane MR 2 2010
OXAMYL MR 2 2015
Carbofuran MR 2 2015
Nitrate MR 2 2018
Total Polychlorinated Biphenyls (PCB) MR 2 2010
Toxaphene MR 2 2010
Methoxychlor MR 2 2010
Cadmium MR 1 2007
Mercury MR 1 2007
Nickel MR 1 2007
Antimony, Total MR 1 2007
Beryllium, Total MR 1 2007
Selenium MR 1 2007
Coliform (TCR) MR 1 2005
Thallium, Total MR 1 2007
Barium MR 1 2007
Arsenic MR 1 2007
Chromium MR 1 2007

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 Arraijanes.

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 PR0003822 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 6 SDWIS / PR0003822 / 7000
2018 Nitrate MR 2 SDWIS / PR0003822 / 1040
2015 Lead and Copper Rule MR 31 SDWIS / PR0003822 / 5000
2015 OXAMYL MR 2 SDWIS / PR0003822 / 2036
2015 Carbofuran MR 2 SDWIS / PR0003822 / 2046
2010 Endrin MR 2 SDWIS / PR0003822 / 2005
2010 BHC-GAMMA MR 2 SDWIS / PR0003822 / 2010
2010 Heptachlor MR 2 SDWIS / PR0003822 / 2065
2010 Heptachlor epoxide MR 2 SDWIS / PR0003822 / 2067
2010 HEXACHLOROBENZENE MR 2 SDWIS / PR0003822 / 2274
2010 Chlordane MR 2 SDWIS / PR0003822 / 2959
2010 Total Polychlorinated Biphenyls (PCB) MR 2 SDWIS / PR0003822 / 2383
2010 Toxaphene MR 2 SDWIS / PR0003822 / 2020
2010 Methoxychlor MR 2 SDWIS / PR0003822 / 2015
2007 Cadmium MR 1 SDWIS / PR0003822 / 1015

How Arraijanes Compares

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

Metric Arraijanes Puerto Rico avg Federal benchmark
Total violations 106 358.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 17 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 198 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 Arraijanes water safe to drink? ▼
Arraijanes (PWS ID: PR0003822) has 106 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 198 people using Groundwater sources.
How many people does Arraijanes serve? ▼
Arraijanes serves 198 people in Morovis, Puerto Rico. It is a Local-owned system using Groundwater water sources with 74 service connections.
What type of violations does Arraijanes have? ▼
Arraijanes has 106 total violations: 17 health-based violations (MCL exceedances or treatment failures), 81 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Arraijanes water? ▼
No PFAS testing data is available for Arraijanes under the EPA's UCMR5 monitoring program.
What water source does Arraijanes use? ▼
Arraijanes 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.