Public water system · NM3512007
ActiveLower Rio Grande Pwwa East Mesa
At a glance
Lower Rio Grande Pwwa East Mesa (PWSID NM3512007) is an active community water system in Dona Ana County, New Mexico. It reports serving 2,104 people through 812 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in January 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,104
Service connections
812
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Lower Rio Grande Pwwa East Mesa compare with other water systems in Dona Ana County?
By EPA's size categories, Lower Rio Grande Pwwa East Mesa is a small system (501 to 3,300 people). Dona Ana County has 68 active public water systems. Its population served is about 44% below the county average of 3,744 people per system, and accounts for 0.8% of the 254,574 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 Lower Rio Grande Pwwa East Mesa 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 Lower Rio Grande Pwwa East Mesa?
EPA lists Lower Rio Grande Pwwa East Mesa 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. 23 of the 68 active systems in Dona Ana County (34%) are also owned by a local government.
Does Lower Rio Grande Pwwa East Mesa have drinking water violations?
EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in January 2011. The violations listed here began between October 1979 and January 2011. By type: 5 monitoring and reporting, 3 public notice, recordkeeping or other and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 9 as resolved and 1 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2011-01-12 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2010-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2009-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-06-04 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2006-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1999-10-19 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1979-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Archived |
All 10 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.
Lower Rio Grande Pwwa East Mesa: frequently asked questions
Who runs Lower Rio Grande Pwwa East Mesa?
Lower Rio Grande Pwwa East Mesa (PWSID NM3512007) is a community water system owned by a local government. It is regulated by the NM state drinking water program.
How many people does Lower Rio Grande Pwwa East Mesa serve?
Lower Rio Grande Pwwa East Mesa reports serving 2,104 people through 812 service connections in Dona Ana County, New Mexico.
Where does Lower Rio Grande Pwwa East Mesa 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 Lower Rio Grande Pwwa East Mesa have any drinking water violations?
EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in January 2011. 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 Lower Rio Grande Pwwa East Mesa'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. EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in January 2011. For current results, consult the system's annual water quality report, EPA ECHO, or the NM state drinking water program.
Where can I find Lower Rio Grande Pwwa East Mesa's water quality report?
As a community water system, Lower Rio Grande Pwwa East Mesa 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 Dona Ana County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Las Cruces Municipal Water System | Dona Ana | 98,175 | Community | Groundwater |
| New Mexico State University | Dona Ana | 24,000 | Community | Groundwater |
| Camino Real Regional Utility Authority | Dona Ana | 19,466 | Community | Groundwater |
| Dona Ana Mdwca | Dona Ana | 16,987 | Community | Groundwater |
| Lake Section Water Company | Dona Ana | 14,619 | Community | Groundwater |
| Moongate West | Dona Ana | 13,362 | 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, “Lower Rio Grande Pwwa East Mesa, PWSID NM3512007, New Mexico”, https://aquacensus.com/water-systems/new-mexico/lower-rio-grande-pwwa-east-mesa-nm3512007 (data as of October 1, 2026).