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States → New Mexico

Community Water System · PWS NM3520023

Pueblo los Cerros

Corrales, New Mexico 87048 - drinking water served from groundwater sources to 180 people, tracked in EPA SDWIS and UCMR5.

180
People served
90
EPA violations
41
Health-based
Untested
UCMR5 result

The verdict

EPA records 90 drinking-water violations at Pueblo los Cerros, 46% of them health-based - below the New Mexico per-system average.

90
Total EPA violations on record
46%
Health-based (MCL / treatment failure)
180
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Pueblo los Cerros

Pueblo los Cerros is a private-owned community water system that delivers drinking water to 180 residents in Corrales, New Mexico (Sandoval County) through 100 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 90 total violations for this system , of which 41 (46%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 36 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Groundwater Rule, recorded in 33 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 New Mexico, EPA tracks 1,037 public water systems serving 2,027,497 people, with 154,522 cumulative violations and 38,650 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 149 violations. Statewide, 70 of 72 UCMR5-tested systems have reported PFAS detections (97.2%).

Pueblo los Cerros's 90 violations sit below the New Mexico 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
180
Total Violations
90
Health-Based Violations
41
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
100
County
Sandoval
School/Daycare
No
MCL Violations
8
Monitoring Violations
36
Treatment Tech Violations
33

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Groundwater Rule TT 33 2022
Lead and Copper Rule MR 14 2025
Coliform (TCR) MR 11 2014
Consumer Confidence Rule Other 10 2015
Coliform (TCR) MCL 8 2015
Revised Total Coliform Rule MON 4 2019
Asbestos MR 4 2020
Public Notice Other 3 2023
E. COLI MR 3 2014

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 Pueblo los Cerros.

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 NM3520023 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

New Mexico Drinking Water Authority

New Mexico'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 NM 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
2025 Lead and Copper Rule MR 14 SDWIS / NM3520023 / 5000
2023 Public Notice Other 3 SDWIS / NM3520023 / 7500
2022 Groundwater Rule TT 33 SDWIS / NM3520023 / 0700
2020 Asbestos MR 4 SDWIS / NM3520023 / 1094
2019 Revised Total Coliform Rule MON 4 SDWIS / NM3520023 / 8000
2015 Consumer Confidence Rule Other 10 SDWIS / NM3520023 / 7000
2015 Coliform (TCR) MCL 8 SDWIS / NM3520023 / 3100
2014 Coliform (TCR) MR 11 SDWIS / NM3520023 / 3100
2014 E. COLI MR 3 SDWIS / NM3520023 / 3014

How Pueblo los Cerros Compares

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

Metric Pueblo los Cerros New Mexico avg Federal benchmark
Total violations 90 149 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 41 37.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 97.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 180 1,955 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,037 regulated public water systems in New Mexico.

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 Pueblo los Cerros water safe to drink? ▼
Pueblo los Cerros (PWS ID: NM3520023) has 90 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 180 people using Groundwater sources.
How many people does Pueblo los Cerros serve? ▼
Pueblo los Cerros serves 180 people in Corrales, New Mexico. It is a Private-owned system using Groundwater water sources with 100 service connections.
What type of violations does Pueblo los Cerros have? ▼
Pueblo los Cerros has 90 total violations: 41 health-based violations (MCL exceedances or treatment failures), 36 monitoring/reporting violations, and 33 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Pueblo los Cerros water? ▼
No PFAS testing data is available for Pueblo los Cerros under the EPA's UCMR5 monitoring program.
What water source does Pueblo los Cerros use? ▼
Pueblo los Cerros 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.