Public water system · NM3556109

Active

Rio De Arenas

At a glance

Rio De Arenas (PWSID NM3556109) is an active community water system in Grant County, New Mexico. It reports serving 205 people through 84 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2024.

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

Population served

205

Service connections

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDNM3556109

System typeCommunity water system

Activity statusActive

Population served205

Service connections84

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyNM state drinking water program

City servedSilver City

StateNew Mexico

ZIP—

CountyGrant County

How does Rio De Arenas compare with other water systems in Grant County?

By EPA's size categories, Rio De Arenas is a very small system (500 people or fewer). Grant County has 28 active public water systems. Its population served is well below the county average of 972 people per system, and accounts for 0.8% of the 27,216 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 Rio De Arenas 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 Rio De Arenas?

EPA lists Rio De Arenas as privately owned. 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. 10 of the 28 active systems in Grant County (36%) are also privately owned.

Does Rio De Arenas have drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2024. The violations listed here began between July 2019 and October 2024. By type: 10 public notice, recordkeeping or other, 1 required treatment not met and 1 reporting. The contaminant or rule involved most often is Consumer Confidence Rule (5 of them). EPA lists 10 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.

Began	Violation	Contaminant or rule	Health-based	Status
2024-10-17	Required treatment not metLSL Inventory · code 2E	Lead and Copper Rule Revisionscode 5200	Yes	Unaddressed
2024-10-17	ReportingLSL Reporting · code 4G	Lead and Copper Rule Revisionscode 5200	No	Unaddressed
2021-10-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Resolved
2021-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2020-10-02	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2020-10-02	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2020-10-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Resolved
2020-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2019-10-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Resolved
2019-07-19	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2019-07-19	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2019-07-19	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	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.

Rio De Arenas: frequently asked questions

Who runs Rio De Arenas?

Rio De Arenas (PWSID NM3556109) is a community water system privately owned. It is regulated by the NM state drinking water program.

How many people does Rio De Arenas serve?

Rio De Arenas reports serving 205 people through 84 service connections in Grant County, New Mexico.

Where does Rio De Arenas 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 Rio De Arenas have any drinking water violations?

Of the 12 most recent violations in EPA's records, one is 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 Rio De Arenas' 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, one is 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 Rio De Arenas' water quality report?

As a community water system, Rio De Arenas 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 Grant County

Water system	County	Population served	Type	Source
Silver City Water System	Grant	14,400	Community	Groundwater
Bayard Municipal Water System	Grant	2,616	Community	Groundwater
Santa Clara Water System	Grant	1,682	Community	Groundwater
Hurley, Town of	Grant	1,577	Community	Purchased groundwater
Arenas Valley Mdwca	Grant	1,204	Community	Purchased groundwater
Freeport Mcmoran Chino Mines	Grant	1,050	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, “Rio De Arenas, PWSID NM3556109, New Mexico”, https://aquacensus.com/water-systems/new-mexico/rio-de-arenas-nm3556109 (data as of October 1, 2026).