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States → New Mexico

Community Water System · PWS NM3566026

Chupadero Mdwca

Tesuque, New Mexico 87574 - drinking water served from groundwater sources to 131 people, tracked in EPA SDWIS and UCMR5.

131
People served
146
EPA violations
57
Health-based
Untested
UCMR5 result

The verdict

EPA records 146 drinking-water violations at Chupadero Mdwca, 39% of them health-based - below the New Mexico per-system average.

146
Total EPA violations on record
39%
Health-based (MCL / treatment failure)
131
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Chupadero Mdwca

Chupadero Mdwca is a local-owned community water system that delivers drinking water to 131 residents in Tesuque, New Mexico (Santa Fe County) through 54 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 146 total violations for this system , of which 57 (39%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 42 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 Groundwater Rule, recorded in 51 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%).

Chupadero Mdwca's 146 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
131
Total Violations
146
Health-Based Violations
57
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
54
County
Santa Fe
School/Daycare
No
MCL Violations
6
Monitoring Violations
42
Treatment Tech Violations
51

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Groundwater Rule TT 51 2019
Consumer Confidence Rule Other 21 2024
Public Notice Other 11 2020
Lead and Copper Rule MR 10 2022
Fluoride MR 5 2005
Gross Beta Particle Activity MR 4 2006
Groundwater Rule Other 4 2019
Radium-228 MR 4 2006
Combined Uranium MR 4 2006
Gross Alpha, Excl. Radon and U MR 4 2006
Combined Uranium MCL 4 2004
Radium-226 MR 4 2006
Fluoride MCL 2 1986
Selenium MR 1 1980
Arsenic MR 1 1980
Mercury MR 1 1980
Nitrate-Nitrite MR 1 2006
Cadmium MR 1 1980
Chromium MR 1 1980
Barium MR 1 1980

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 Chupadero 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 NM3566026 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
2024 Consumer Confidence Rule Other 21 SDWIS / NM3566026 / 7000
2022 Lead and Copper Rule MR 10 SDWIS / NM3566026 / 5000
2020 Public Notice Other 11 SDWIS / NM3566026 / 7500
2019 Groundwater Rule TT 51 SDWIS / NM3566026 / 0700
2019 Groundwater Rule Other 4 SDWIS / NM3566026 / 0700
2006 Gross Beta Particle Activity MR 4 SDWIS / NM3566026 / 4100
2006 Radium-228 MR 4 SDWIS / NM3566026 / 4030
2006 Combined Uranium MR 4 SDWIS / NM3566026 / 4006
2006 Gross Alpha, Excl. Radon and U MR 4 SDWIS / NM3566026 / 4000
2006 Radium-226 MR 4 SDWIS / NM3566026 / 4020
2006 Nitrate-Nitrite MR 1 SDWIS / NM3566026 / 1038
2005 Fluoride MR 5 SDWIS / NM3566026 / 1025
2004 Combined Uranium MCL 4 SDWIS / NM3566026 / 4006
1986 Fluoride MCL 2 SDWIS / NM3566026 / 1025
1980 Selenium MR 1 SDWIS / NM3566026 / 1045

How Chupadero Mdwca Compares

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

Metric Chupadero Mdwca New Mexico avg Federal benchmark
Total violations 146 149 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 57 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 131 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 Chupadero Mdwca water safe to drink? ▼
Chupadero Mdwca (PWS ID: NM3566026) has 146 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 131 people using Groundwater sources.
How many people does Chupadero Mdwca serve? ▼
Chupadero Mdwca serves 131 people in Tesuque, New Mexico. It is a Local-owned system using Groundwater water sources with 54 service connections.
What type of violations does Chupadero Mdwca have? ▼
Chupadero Mdwca has 146 total violations: 57 health-based violations (MCL exceedances or treatment failures), 42 monitoring/reporting violations, and 51 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Chupadero Mdwca water? ▼
No PFAS testing data is available for Chupadero Mdwca under the EPA's UCMR5 monitoring program.
What water source does Chupadero Mdwca use? ▼
Chupadero 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.