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San Miguel County, New Mexico — public water systems

At a glance

42 active public water systems are filed under San Miguel County, New Mexico in EPA's SDWIS records, together reporting 23,678 people served. The largest is Las Vegas (City of), which reports serving 14,530 people. 26 are community water systems serving people where they live; the other 16 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

42

Population served

23.7K

Community systems

26

Groundwater share

90.5%

How does San Miguel County compare with other New Mexico counties?

San Miguel County has the 10th-most active public water systems among the 49 counties listed for active New Mexico systems in EPA records; among the 31 with 3 or more systems, the median has 23. Its systems report 23,678 people served in total, the 19th-largest county figure in the state and 1.1% of the statewide total. The average system here reports serving 564 people, well below the New Mexico average of 1,885. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does San Miguel County's drinking water come from?

By primary water source, San Miguel County's active systems draw on groundwater (36, 86%), surface water (3, 7.1%), groundwater under influence of surface water (1, 2.4%) and purchased surface water (1, 2.4%). Overall, 90% rely mainly on groundwater (including purchased groundwater) and 9.5% on surface water, compared with 93% and 7.2% across New Mexico. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Las Vegas (City of), draws primarily on surface water.

What kinds of water systems operate in San Miguel County?

San Miguel County's active systems break down as 26 community systems (62%), 4 non-transient non-community systems (9.5%) and 12 transient non-community systems (29%). 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. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as local government (62%), private (21%), state government (12%) and federal government (4.8%).

Water systems in San Miguel County

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Active public water systems in San Miguel County, New Mexico
#Water systemCountyPopulation servedTypeSource
1Las Vegas (City of)San Miguel14,530CommunitySurface water
2Pecos Water SystemSan Miguel2,133CommunityGroundwater
3Pendaries MdwcaSan Miguel500CommunityGroundwater
4Conchas Dam State Park NorthsideSan Miguel450Transient non-communitySurface water
5East Pecos MdwcaSan Miguel413CommunityGroundwater
6Pendaries Rv ResortSan Miguel405Non-transient non-communityPurchased groundwater
7Ilfeld MdwcaSan Miguel400CommunityGroundwater
8Las Vegas KoaSan Miguel350Transient non-communityGroundwater
9United World CollegeSan Miguel350Non-transient non-communityPurchased surface water
10Pecos Dairy QueenSan Miguel300Transient non-communityGroundwater
11Pecos National Historical Park-AdminSan Miguel300Transient non-communityGroundwater
12Villanueva MdwcaSan Miguel268CommunityGroundwater
13Big Mesa Water MdwcaSan Miguel250CommunitySurface water
14Tecolotito MdwcaSan Miguel246CommunityGroundwater
15San Jose MdwcaSan Miguel200CommunityGroundwater
16La Pasada MdwcaSan Miguel191CommunityGroundwater
17Sena MdwcaSan Miguel180CommunityGroundwater
18El Porvenir Christian CampSan Miguel175Transient non-communityGroundwater
19Camp Blue HavenSan Miguel150Transient non-communityGroundwater
20San Juan MdwcaSan Miguel136CommunityGroundwater
21North San Ysidro MdwcaSan Miguel133CommunityGroundwater
22Valley Elementary and Middle SchoolSan Miguel130Non-transient non-communityGroundwater
23Tecolote MdwcaSan Miguel126CommunityGroundwater
24Villanueva State ParkSan Miguel126Transient non-communityGroundwater
25Griegos MarketSan Miguel125Transient non-communityGroundwater
26Gonzales Ranch MdwcaSan Miguel114CommunityGroundwater
27Ribera MdwcaSan Miguel113CommunityGroundwater
28El Ancon MdwcaSan Miguel112CommunityGroundwater
29Rowe MdwcaSan Miguel100CommunityGroundwater
30El Coruco MdwcaSan Miguel93CommunityGroundwater
31San Miguel Del Vado MdwcaSan Miguel79CommunityGroundwater
32Chapelle MdwcaSan Miguel60CommunityGroundwater
33Tres Lagunas Home Owners AssociationSan Miguel56Transient non-communityGroundwater under influence of surface water
34El Creston MdwcaSan Miguel50CommunityGroundwater
35Mike Mateo Elementary SchoolSan Miguel50Non-transient non-communityGroundwater
36La Cueva MdwcaSan Miguel48CommunityGroundwater
37Gabaldon MdwcaSan Miguel47CommunityGroundwater
38Lower Colonias MdwcaSan Miguel40CommunityGroundwater
39Benedictine MonasterySan Miguel40Transient non-communityGroundwater
40Pecos National Historic Park Visitor CntSan Miguel40Transient non-communityGroundwater
41South San Ysidro MdwcaSan Miguel35CommunityGroundwater
42Lisboa Springs Fish HatcherySan Miguel34Transient non-communityGroundwater

San Miguel County water systems: frequently asked questions

How many public water systems are in San Miguel County, New Mexico?

EPA's SDWIS records file 42 active public water systems under San Miguel County, New Mexico: 26 community systems (62%), 4 non-transient non-community systems (9.5%) and 12 transient non-community systems (29%).

Who supplies drinking water in San Miguel County, NM?

The largest community water systems filed under San Miguel County are Las Vegas (City of) (14,530 people served), Pecos Water System (2,133 people served) and Pendaries Mdwca (500 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does San Miguel County's drinking water come from groundwater or surface water?

Of the 42 active public water systems in San Miguel County, 90% draw mainly on groundwater and 9.5% on surface water, counting purchased supplies. The largest system, Las Vegas (City of), uses surface water.

Where can I find a water quality report for San Miguel County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 26 community systems are filed under San Miguel County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in San Miguel County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More New Mexico water systems

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, “Public water systems in San Miguel County, New Mexico”, https://aquacensus.com/water-systems/new-mexico/san-miguel (data as of October 1, 2026).