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McKinley County, New Mexico — public water systems

At a glance

27 active public water systems are filed under McKinley County, New Mexico in EPA's SDWIS records, together reporting 33,611 people served. The largest is Gallup Water System, which reports serving 20,880 people. 16 are community water systems serving people where they live; the other 11 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

27

Population served

33.6K

Community systems

16

Groundwater share

100%

How does McKinley County compare with other New Mexico counties?

McKinley County has the 14th-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 33,611 people served in total, the 13th-largest county figure in the state and 1.5% of the statewide total. The average system here reports serving 1,245 people, about 34% 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 McKinley County's drinking water come from?

By primary water source, McKinley County's active systems draw on groundwater (26, 96%) and purchased groundwater (1, 3.7%). Overall, all rely mainly on groundwater (including purchased groundwater) and none 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, Gallup Water System, draws primarily on groundwater.

What kinds of water systems operate in McKinley County?

McKinley County's active systems break down as 16 community systems (59%), 3 non-transient non-community systems (11%) and 8 transient non-community systems (30%). 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 private (63%), local government (30%) and state government (7.4%).

Water systems in McKinley County

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Active public water systems in McKinley County, New Mexico
#Water systemCountyPopulation servedTypeSource
1Gallup Water SystemMcKinley20,880CommunityGroundwater
2Manuelito Rest AreaMcKinley2,501Transient non-communityGroundwater
3Gamerco Water & SanitationMcKinley1,744CommunityPurchased groundwater
4Gallup Port of EntryMcKinley1,500Transient non-communityGroundwater
5St Bonaventure MissionMcKinley1,350Transient non-communityGroundwater
6Thoreau Water & Sanitation DistrictMcKinley1,173CommunityGroundwater
7Speedys Black Hat StoreMcKinley800Transient non-communityGroundwater
8Ramah Water & Sanitation DistrictMcKinley517CommunityGroundwater
9Yah Ta Hey W & SdMcKinley435CommunityGroundwater
10Whispering Cedars Water AssociationMcKinley425CommunityGroundwater
11White Cliffs MdwuaMcKinley323CommunityGroundwater
12Broken Arrow Bible RanchMcKinley300Transient non-communityGroundwater
13El Segundo SiteMcKinley238Non-transient non-communityGroundwater
14Top of the World Water Association CorpMcKinley177CommunityGroundwater
15Kamp KiwanisMcKinley150Transient non-communityGroundwater
16El Sabino StoreMcKinley150Transient non-communityGroundwater
17Lee Ranch MineMcKinley135Non-transient non-communityGroundwater
18Bluewater Lake MdwcaMcKinley135CommunityGroundwater
19Coal Basin DwuaMcKinley116CommunityGroundwater
20D & S Trailer RanchMcKinley109CommunityGroundwater
21T & R Market Water SupplyMcKinley100Non-transient non-communityGroundwater
22Block A Well Co-OpMcKinley92CommunityGroundwater
23St Williams Mobile Home ParkMcKinley82CommunityGroundwater
24Cedar Ridge Trailer ParkMcKinley65CommunityGroundwater
25Sagebrush Water Co-OpMcKinley54CommunityGroundwater
26Manuelito Navajo Childrens HomeMcKinley35CommunityGroundwater
27Jem TradingMcKinley25Transient non-communityGroundwater

McKinley County water systems: frequently asked questions

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

EPA's SDWIS records file 27 active public water systems under McKinley County, New Mexico: 16 community systems (59%), 3 non-transient non-community systems (11%) and 8 transient non-community systems (30%).

Who supplies drinking water in McKinley County, NM?

The largest community water systems filed under McKinley County are Gallup Water System (20,880 people served), Gamerco Water & Sanitation (1,744 people served) and Thoreau Water & Sanitation District (1,173 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 McKinley County's drinking water come from groundwater or surface water?

Of the 27 active public water systems in McKinley County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Gallup Water System, uses groundwater.

Where can I find a water quality report for McKinley 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. 16 community systems are filed under McKinley 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 McKinley 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 McKinley County, New Mexico”, https://aquacensus.com/water-systems/new-mexico/mckinley (data as of October 1, 2026).