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States → New Mexico

Community Water System · PWS NM3500721

Rio Embudo Mdwca

Dixon, New Mexico 87527 - drinking water served from groundwater sources to 159 people, tracked in EPA SDWIS and UCMR5.

159
People served
335
EPA violations
23
Health-based
Untested
UCMR5 result

The verdict

EPA records 335 drinking-water violations at Rio Embudo Mdwca, 7% of them health-based - above the New Mexico per-system average.

335
Total EPA violations on record
7%
Health-based (MCL / treatment failure)
159
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Rio Embudo Mdwca

Rio Embudo Mdwca is a local-owned community water system that delivers drinking water to 159 residents in Dixon, New Mexico (Rio Arriba County) through 63 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 335 total violations for this system , of which 23 (7%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 210 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 Coliform (TCR), recorded in 182 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 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%).

Rio Embudo Mdwca's 335 violations sit above 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
159
Total Violations
335
Health-Based Violations
23
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
63
County
Rio Arriba
School/Daycare
No
MCL Violations
11
Monitoring Violations
210
Treatment Tech Violations
12

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 182 1996
Consumer Confidence Rule Other 26 2020
Revised Total Coliform Rule MON 15 2020
Coliform (TCR) Other 13 1994
Public Notice Other 12 2021
Coliform (TCR) MCL 11 1996
Surface Water Treatment Rule TT 8 1992
Nitrate-Nitrite MR 6 2006
Lead and Copper Rule MR 6 2022
Groundwater Rule Other 5 2019
Revised Total Coliform Rule Other 4 2016
Groundwater Rule TT 4 2019
Nitrate MR 1 2000

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 Rio Embudo Mdwca.

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 NM3500721 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
2022 Lead and Copper Rule MR 6 SDWIS / NM3500721 / 5000
2021 Public Notice Other 12 SDWIS / NM3500721 / 7500
2020 Consumer Confidence Rule Other 26 SDWIS / NM3500721 / 7000
2020 Revised Total Coliform Rule MON 15 SDWIS / NM3500721 / 8000
2019 Groundwater Rule Other 5 SDWIS / NM3500721 / 0700
2019 Groundwater Rule TT 4 SDWIS / NM3500721 / 0700
2016 Revised Total Coliform Rule Other 4 SDWIS / NM3500721 / 8000
2006 Nitrate-Nitrite MR 6 SDWIS / NM3500721 / 1038
2000 Nitrate MR 1 SDWIS / NM3500721 / 1040
1996 Coliform (TCR) MR 182 SDWIS / NM3500721 / 3100
1996 Coliform (TCR) MCL 11 SDWIS / NM3500721 / 3100
1994 Coliform (TCR) Other 13 SDWIS / NM3500721 / 3100
1992 Surface Water Treatment Rule TT 8 SDWIS / NM3500721 / 0200

How Rio Embudo Mdwca Compares

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

Metric Rio Embudo Mdwca New Mexico avg Federal benchmark
Total violations 335 149 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 23 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 159 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 Rio Embudo Mdwca water safe to drink? ▼
Rio Embudo Mdwca (PWS ID: NM3500721) has 335 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 159 people using Groundwater sources.
How many people does Rio Embudo Mdwca serve? ▼
Rio Embudo Mdwca serves 159 people in Dixon, New Mexico. It is a Local-owned system using Groundwater water sources with 63 service connections.
What type of violations does Rio Embudo Mdwca have? ▼
Rio Embudo Mdwca has 335 total violations: 23 health-based violations (MCL exceedances or treatment failures), 210 monitoring/reporting violations, and 12 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Rio Embudo Mdwca water? ▼
No PFAS testing data is available for Rio Embudo Mdwca under the EPA's UCMR5 monitoring program.
What water source does Rio Embudo Mdwca use? ▼
Rio Embudo Mdwca 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.