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States → New Mexico

Community Water System · PWS NM3505326

Tesuque Mdwca

Santa Fe, New Mexico 87502 - drinking water served from groundwater sources to 258 people, tracked in EPA SDWIS and UCMR5.

258
People served
48
EPA violations
6
Health-based
Untested
UCMR5 result

The verdict

EPA records 48 drinking-water violations at Tesuque Mdwca, 13% of them health-based - below the New Mexico per-system average.

48
Total EPA violations on record
13%
Health-based (MCL / treatment failure)
258
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Tesuque Mdwca

Tesuque Mdwca is a local-owned community water system that delivers drinking water to 258 residents in Santa Fe, New Mexico (Santa Fe County) through 110 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 48 total violations for this system , of which 6 (13%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 9 monitoring and reporting violations are on file. The most recent violation on record dates to 2012.

The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 17 violations (Other). 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%).

Tesuque Mdwca's 48 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
258
Total Violations
48
Health-Based Violations
6
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
110
County
Santa Fe
School/Daycare
No
MCL Violations
6
Monitoring Violations
9
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 17 2010
Coliform (TCR) MCL 6 2012
Nitrate-Nitrite MR 3 2005
Chromium MR 1 1982
Selenium MR 1 1982
Arsenic MR 1 1982
Barium MR 1 1982
Cadmium MR 1 1982
Mercury MR 1 1982

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 Tesuque 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 NM3505326 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
2012 Coliform (TCR) MCL 6 SDWIS / NM3505326 / 3100
2010 Consumer Confidence Rule Other 17 SDWIS / NM3505326 / 7000
2005 Nitrate-Nitrite MR 3 SDWIS / NM3505326 / 1038
1982 Chromium MR 1 SDWIS / NM3505326 / 1020
1982 Selenium MR 1 SDWIS / NM3505326 / 1045
1982 Arsenic MR 1 SDWIS / NM3505326 / 1005
1982 Barium MR 1 SDWIS / NM3505326 / 1010
1982 Cadmium MR 1 SDWIS / NM3505326 / 1015
1982 Mercury MR 1 SDWIS / NM3505326 / 1035

How Tesuque Mdwca Compares

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

Metric Tesuque Mdwca New Mexico avg Federal benchmark
Total violations 48 149 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 6 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 258 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 Tesuque Mdwca water safe to drink? ▼
Tesuque Mdwca (PWS ID: NM3505326) has 48 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 258 people using Groundwater sources.
How many people does Tesuque Mdwca serve? ▼
Tesuque Mdwca serves 258 people in Santa Fe, New Mexico. It is a Local-owned system using Groundwater water sources with 110 service connections.
What type of violations does Tesuque Mdwca have? ▼
Tesuque Mdwca has 48 total violations: 6 health-based violations (MCL exceedances or treatment failures), 9 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Tesuque Mdwca water? ▼
No PFAS testing data is available for Tesuque Mdwca under the EPA's UCMR5 monitoring program.
What water source does Tesuque Mdwca use? ▼
Tesuque 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.