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CABALLO LAKE MDWCA

PWS ID: NM3510027 · CABALLO, New Mexico 87931

CABALLO LAKE MDWCA serves 95 people in CABALLO, New Mexico using Groundwater water sources. It has 197 recorded EPA violations, including 5 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: CABALLO LAKE MDWCA

CABALLO LAKE MDWCA is a local-owned community water system that delivers drinking water to 95 residents in CABALLO, New Mexico (Sierra County) through 49 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 197 total violations for this system , of which 5 (3%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 172 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 Consumer Confidence Rule, recorded in 9 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. CABALLO LAKE MDWCA's 197 violations sit above the New Mexico average. Statewide, 70 of 72 UCMR5-tested systems have reported PFAS detections (97.2%). 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
95
Total Violations
197
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
49
County
Sierra
School/Daycare
No
MCL Violations
5
Monitoring Violations
172
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 9 2021
Coliform (TCR) MR 6 1998
Coliform (TCR) MCL 5 2002
Arsenic MR 4 2002
Nickel MR 4 2002
Antimony, Total MR 4 2002
Thallium, Total MR 4 2002
Xylenes, Total MR 4 2002
DICHLOROMETHANE MR 4 2002
o-Dichlorobenzene MR 4 2002
p-Dichlorobenzene MR 4 2002
Vinyl chloride MR 4 2002
1,1-Dichloroethylene MR 4 2002
1,1,1-Trichloroethane MR 4 2002
Carbon tetrachloride MR 4 2002
Trichloroethylene MR 4 2002
1,1,2-Trichloroethane MR 4 2002
Tetrachloroethylene MR 4 2002
Benzene MR 4 2002
Toluene MR 4 2002
Mercury MR 4 2002
Ethylbenzene MR 4 2002
Barium MR 4 2002
Cadmium MR 4 2002
Beryllium, Total MR 4 2002
Fluoride MR 4 2002
Selenium MR 4 2002
Chromium MR 4 2002
1,2-Dichloroethane MR 4 2002
trans-1,2-Dichloroethylene MR 4 2002

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 CABALLO LAKE 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 NM3510027 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 Consumer Confidence Rule Other 9 SDWIS / NM3510027 / 7000
2002 Coliform (TCR) MCL 5 SDWIS / NM3510027 / 3100
2002 Arsenic MR 4 SDWIS / NM3510027 / 1005
2002 Nickel MR 4 SDWIS / NM3510027 / 1036
2002 Antimony, Total MR 4 SDWIS / NM3510027 / 1074
2002 Thallium, Total MR 4 SDWIS / NM3510027 / 1085
2002 Xylenes, Total MR 4 SDWIS / NM3510027 / 2955
2002 DICHLOROMETHANE MR 4 SDWIS / NM3510027 / 2964
2002 o-Dichlorobenzene MR 4 SDWIS / NM3510027 / 2968
2002 p-Dichlorobenzene MR 4 SDWIS / NM3510027 / 2969
2002 Vinyl chloride MR 4 SDWIS / NM3510027 / 2976
2002 1,1-Dichloroethylene MR 4 SDWIS / NM3510027 / 2977
2002 1,1,1-Trichloroethane MR 4 SDWIS / NM3510027 / 2981
2002 Carbon tetrachloride MR 4 SDWIS / NM3510027 / 2982
2002 Trichloroethylene MR 4 SDWIS / NM3510027 / 2984

How CABALLO LAKE MDWCA Compares

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

Metric CABALLO LAKE MDWCA New Mexico avg Federal benchmark
Total violations 197 149 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 5 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 95 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is CABALLO LAKE MDWCA water safe to drink? ▼
CABALLO LAKE MDWCA (PWS ID: NM3510027) has 197 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 95 people using Groundwater sources.
How many people does CABALLO LAKE MDWCA serve? ▼
CABALLO LAKE MDWCA serves 95 people in CABALLO, New Mexico. It is a Local-owned system using Groundwater water sources with 49 service connections.
What type of violations does CABALLO LAKE MDWCA have? ▼
CABALLO LAKE MDWCA has 197 total violations: 5 health-based violations (MCL exceedances or treatment failures), 172 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in CABALLO LAKE MDWCA water? ▼
No PFAS testing data is available for CABALLO LAKE MDWCA under the EPA's UCMR5 monitoring program.
What water source does CABALLO LAKE MDWCA use? ▼
CABALLO LAKE 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.

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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.

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