Public water system · NM3537526
ActiveLa Cienega Mdwca
At a glance
La Cienega Mdwca (PWSID NM3537526) is an active community water system in Santa Fe County, New Mexico. It reports serving 321 people through 138 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, 2 are health-based, and the most recent began in August 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
321
Service connections
138
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does La Cienega Mdwca compare with other water systems in Santa Fe County?
By EPA's size categories, La Cienega Mdwca is a very small system (500 people or fewer). Santa Fe County has 84 active public water systems. Its population served is well below the county average of 1,849 people per system, and accounts for 0.2% of the 155,343 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 La Cienega 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 La Cienega Mdwca?
EPA lists La Cienega 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. 33 of the 84 active systems in Santa Fe County (39%) are also owned by a local government.
Does La Cienega Mdwca have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in August 2025. The violations listed here began between January 2015 and August 2025. By type: 4 public notice, recordkeeping or other, 4 monitoring, 2 monitoring and reporting and 2 required treatment not met. The contaminant or rule involved most often is Public Notice (4 of them). EPA lists 11 as resolved and 1 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 |
|---|---|---|---|---|
| 2025-08-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2022-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2020-11-05 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-08-18 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2015-09-18 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2015-04-16 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2015-01-19 | 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.
La Cienega Mdwca: frequently asked questions
Who runs La Cienega Mdwca?
La Cienega Mdwca (PWSID NM3537526) is a community water system owned by a local government. It is regulated by the NM state drinking water program.
How many people does La Cienega Mdwca serve?
La Cienega Mdwca reports serving 321 people through 138 service connections in Santa Fe County, New Mexico.
Where does La Cienega 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 La Cienega Mdwca have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in August 2025. 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 La Cienega 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, 2 are health-based, and the most recent began in August 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the NM state drinking water program.
Where can I find La Cienega Mdwca's water quality report?
As a community water system, La Cienega 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 Santa Fe County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Santa Fe Water System (City of) | Santa Fe | 90,810 | Community | Surface water |
| Entranosa Water Association | Santa Fe + 1 more | 8,500 | Community | Groundwater |
| Eldorado Area Water and Sanitation Dist. | Santa Fe | 7,082 | Community | Purchased surface water |
| Epcor Water New Mexico Inc.., Edgewood | Santa Fe | 6,795 | Community | Groundwater |
| Santa Fe County South Sector | Santa Fe | 6,775 | Community | Purchased surface water |
| El Rancho De Los Golondrinas | Santa Fe | 4,500 | Transient non-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, “La Cienega Mdwca, PWSID NM3537526, New Mexico”, https://aquacensus.com/water-systems/new-mexico/la-cienega-mdwca-nm3537526 (data as of October 1, 2026).