Public water system · NM3506621

Active

Ojo Caliente Mdwca

At a glance

Ojo Caliente Mdwca (PWSID NM3506621) is an active community water system in Taos County, New Mexico. It reports serving 226 people through 103 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in October 2024.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

226

Service connections

103

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDNM3506621

System typeCommunity water system

Activity statusActive

Population served226

Service connections103

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyNM state drinking water program

City servedOjo Caliente

StateNew Mexico

ZIP—

CountyTaos County

How does Ojo Caliente Mdwca compare with other water systems in Taos County?

By EPA's size categories, Ojo Caliente Mdwca is a very small system (500 people or fewer). Taos County has 94 active public water systems. Its population served is about 15% below the county average of 266 people per system, and accounts for 0.9% of the 25,046 people reported by systems filed under the county. Across New Mexico, the 1,165 active systems average 1,885 people each. Nationally, the average active community water system reports serving 6,703 people, so Ojo Caliente Mdwca is well below that figure.

What does “community water system” mean?

A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. New Mexico has 645 active community water systems, 55% of the state's 1,165 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,009 New Mexico systems (87%) list groundwater as their primary source.

Who owns and regulates Ojo Caliente Mdwca?

EPA lists Ojo Caliente Mdwca as owned by a local government. The NM state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 36 of the 94 active systems in Taos County (38%) are also owned by a local government.

Does Ojo Caliente Mdwca have drinking water violations?

Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in October 2024. The violations listed here began between September 2019 and October 2024. By type: 6 contaminant level above the legal limit, 3 public notice, recordkeeping or other, 2 required treatment not met and 1 reporting. The contaminant or rule involved most often is Combined Uranium (6 of them). EPA lists 10 as resolved and 2 as addressed. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Addressed means the violation is not resolved or archived and is covered by formal enforcement.

Began	Violation	Contaminant or rule	Health-based	Status
2024-10-17	ReportingLSL Reporting · code 4G	Lead and Copper Rule Revisionscode 5200	No	Addressed
2024-10-17	Required treatment not metLSL Inventory · code 2E	Lead and Copper Rule Revisionscode 5200	Yes	Addressed
2023-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2023-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Uraniumcode 4006	Yes	Resolved
2022-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Uraniumcode 4006	Yes	Resolved
2022-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Uraniumcode 4006	Yes	Resolved
2021-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2020-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Uraniumcode 4006	Yes	Resolved
2020-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Uraniumcode 4006	Yes	Resolved
2019-12-14	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2019-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Uraniumcode 4006	Yes	Resolved
2019-09-18	Required treatment not metFailure To Address Deficiency · code 45	Groundwater Rulecode 0700	Yes	Resolved

The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.

Ojo Caliente Mdwca: frequently asked questions

Who runs Ojo Caliente Mdwca?

Ojo Caliente Mdwca (PWSID NM3506621) is a community water system owned by a local government. It is regulated by the NM state drinking water program.

How many people does Ojo Caliente Mdwca serve?

Ojo Caliente Mdwca reports serving 226 people through 103 service connections in Taos County, New Mexico.

Where does Ojo Caliente Mdwca get its water?

EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.

Does Ojo Caliente Mdwca have any drinking water violations?

Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in October 2024. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.

Is Ojo Caliente Mdwca's water safe to drink?

AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the NM state drinking water program.

Where can I find Ojo Caliente Mdwca's water quality report?

As a community water system, Ojo Caliente Mdwca must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.

Other water systems in Taos County

Water system	County	Population served	Type	Source
Taos Municipal Water System	Taos	5,528	Community	Groundwater
Questa Water System	Taos	2,337	Community	Groundwater
El Prado Water & Sanitation District	Taos	1,076	Community	Groundwater
Village of Taos Ski Valley	Taos	1,025	Community	Groundwater
Llano Quemado Mdwca	Taos	800	Community	Groundwater
Ranchos De Taos Mdwca	Taos	750	Community	Groundwater

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About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Ojo Caliente Mdwca, PWSID NM3506621, New Mexico”, https://aquacensus.com/water-systems/new-mexico/ojo-caliente-mdwca-nm3506621 (data as of October 1, 2026).