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Non-Transient Non-Community Water System · PWS PR0468044

Martex Farms

Santa Isabel, Puerto Rico 00757 - drinking water served from groundwater sources to 100 people, tracked in EPA SDWIS and UCMR5.

100
People served
147
EPA violations
5
Health-based
Untested
UCMR5 result

The verdict

EPA records 147 drinking-water violations at Martex Farms, 3% of them health-based - below the Puerto Rico per-system average.

147
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
100
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Martex Farms

Martex Farms is a local-owned non-transient non-community water system that delivers drinking water to 100 residents in Santa Isabel, Puerto Rico (Santa Isabel Municipio County) through 37 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 147 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 141 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 Nitrate, recorded in 20 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%).

Martex Farms's 147 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
100
Total Violations
147
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
37
County
Santa Isabel Municipio
School/Daycare
No
MCL Violations
2
Monitoring Violations
141
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 20 2023
Coliform (TCR) MR 13 2009
Lead and Copper Rule MR 9 2020
Total Haloacetic Acids (HAA5) MR 4 2021
TTHM MR 4 2021
Barium MR 3 2019
Chromium MR 3 2019
Fluoride MR 3 2019
Mercury MR 3 2019
Antimony, Total MR 3 2019
Selenium MR 3 2019
LEAD AND COPPER RULE REVISIONS TT 3 2024
CYANIDE MR 3 2019
Cadmium MR 3 2019
Thallium, Total MR 3 2019
Arsenic MR 3 2019
Beryllium, Total MR 3 2019
Coliform (TCR) MCL 2 2011
BHC-GAMMA MR 2 2019
Toxaphene MR 2 2019
Diquat MR 2 2019
Glyphosate MR 2 2019
Di(2-ethylhexyl) phthalate MR 2 2019
Picloram MR 2 2019
Dinoseb MR 2 2019
Hexachlorocyclopentadiene MR 2 2019
2,4-D MR 2 2019
HEXACHLOROBENZENE MR 2 2019
Benzo(a)pyrene MR 2 2019
Pentachlorophenol MR 2 2019

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 Martex Farms.

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 PR0468044 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 3 SDWIS / PR0468044 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / PR0468044 / 5200
2023 Nitrate MR 20 SDWIS / PR0468044 / 1040
2021 Total Haloacetic Acids (HAA5) MR 4 SDWIS / PR0468044 / 2456
2021 TTHM MR 4 SDWIS / PR0468044 / 2950
2020 Lead and Copper Rule MR 9 SDWIS / PR0468044 / 5000
2019 Barium MR 3 SDWIS / PR0468044 / 1010
2019 Chromium MR 3 SDWIS / PR0468044 / 1020
2019 Fluoride MR 3 SDWIS / PR0468044 / 1025
2019 Mercury MR 3 SDWIS / PR0468044 / 1035
2019 Antimony, Total MR 3 SDWIS / PR0468044 / 1074
2019 Selenium MR 3 SDWIS / PR0468044 / 1045
2019 CYANIDE MR 3 SDWIS / PR0468044 / 1024
2019 Cadmium MR 3 SDWIS / PR0468044 / 1015
2019 Thallium, Total MR 3 SDWIS / PR0468044 / 1085

How Martex Farms Compares

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

Metric Martex Farms Puerto Rico avg Federal benchmark
Total violations 147 358.4 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 100 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 Martex Farms water safe to drink? ▼
Martex Farms (PWS ID: PR0468044) has 147 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 100 people using Groundwater sources.
How many people does Martex Farms serve? ▼
Martex Farms serves 100 people in Santa Isabel, Puerto Rico. It is a Local-owned system using Groundwater water sources with 37 service connections.
What type of violations does Martex Farms have? ▼
Martex Farms has 147 total violations: 5 health-based violations (MCL exceedances or treatment failures), 141 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Martex Farms water? ▼
No PFAS testing data is available for Martex Farms under the EPA's UCMR5 monitoring program.
What water source does Martex Farms use? ▼
Martex Farms uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.