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States → New Mexico

Community Water System · PWS NM3506329

Llano Quemado Mdwca

Ranchos de Taos, New Mexico 87557 - drinking water served from groundwater sources to 800 people, tracked in EPA SDWIS and UCMR5.

800
People served
332
EPA violations
191
Health-based
Untested
UCMR5 result

The verdict

EPA records 332 drinking-water violations at Llano Quemado Mdwca, 58% of them health-based - above the New Mexico per-system average.

332
Total EPA violations on record
58%
Health-based (MCL / treatment failure)
800
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Llano Quemado Mdwca

Llano Quemado Mdwca is a local-owned community water system that delivers drinking water to 800 residents in Ranchos de Taos, New Mexico (Taos County) through 240 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 332 total violations for this system , of which 191 (58%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 97 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Fluoride, recorded in 143 violations (MCL, 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%).

Llano Quemado Mdwca's 332 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
800
Total Violations
332
Health-Based Violations
191
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
240
County
Taos
School/Daycare
No
MCL Violations
143
Monitoring Violations
97
Treatment Tech Violations
48

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Fluoride MCL 143 2016
Groundwater Rule TT 48 2014
Fluoride MR 30 2006
Revised Total Coliform Rule MON 27 2020
Consumer Confidence Rule Other 15 2019
Coliform (TCR) MR 12 2010
Public Notice Other 8 2021
Total Haloacetic Acids (HAA5) MR 8 2014
TTHM MR 8 2014
Chlorine MR 8 2018
Revised Total Coliform Rule Other 4 2016
Lead and Copper Rule MR 4 2015
Groundwater Rule Other 2 2020

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 Llano Quemado 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 NM3506329 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
2021 Public Notice Other 8 SDWIS / NM3506329 / 7500
2020 Revised Total Coliform Rule MON 27 SDWIS / NM3506329 / 8000
2020 Groundwater Rule Other 2 SDWIS / NM3506329 / 0700
2019 Consumer Confidence Rule Other 15 SDWIS / NM3506329 / 7000
2018 Chlorine MR 8 SDWIS / NM3506329 / 0999
2016 Fluoride MCL 143 SDWIS / NM3506329 / 1025
2016 Revised Total Coliform Rule Other 4 SDWIS / NM3506329 / 8000
2015 Lead and Copper Rule MR 4 SDWIS / NM3506329 / 5000
2014 Groundwater Rule TT 48 SDWIS / NM3506329 / 0700
2014 Total Haloacetic Acids (HAA5) MR 8 SDWIS / NM3506329 / 2456
2014 TTHM MR 8 SDWIS / NM3506329 / 2950
2010 Coliform (TCR) MR 12 SDWIS / NM3506329 / 3100
2006 Fluoride MR 30 SDWIS / NM3506329 / 1025

How Llano Quemado Mdwca Compares

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

Metric Llano Quemado Mdwca New Mexico avg Federal benchmark
Total violations 332 149 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 191 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 800 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 Llano Quemado Mdwca water safe to drink? ▼
Llano Quemado Mdwca (PWS ID: NM3506329) has 332 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 800 people using Groundwater sources.
How many people does Llano Quemado Mdwca serve? ▼
Llano Quemado Mdwca serves 800 people in Ranchos de Taos, New Mexico. It is a Local-owned system using Groundwater water sources with 240 service connections.
What type of violations does Llano Quemado Mdwca have? ▼
Llano Quemado Mdwca has 332 total violations: 191 health-based violations (MCL exceedances or treatment failures), 97 monitoring/reporting violations, and 48 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Llano Quemado Mdwca water? ▼
No PFAS testing data is available for Llano Quemado Mdwca under the EPA's UCMR5 monitoring program.
What water source does Llano Quemado Mdwca use? ▼
Llano Quemado 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.