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Pitkin County, Colorado — public water systems

At a glance

49 active public water systems are filed under Pitkin County, Colorado in EPA's SDWIS records, together reporting 53,175 people served. The largest is City of Aspen, which reports serving 31,100 people. 26 are community water systems serving people where they live; the other 23 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

49

Population served

53.2K

Community systems

26

Groundwater share

77.6%

How does Pitkin County compare with other Colorado counties?

Pitkin County has the 16th-most active public water systems among the 113 counties listed for active Colorado systems in EPA records; among the 65 with 3 or more systems, the median has 18. Its systems report 53,175 people served in total, the 20th-largest county figure in the state and 0.7% of the statewide total. The average system here reports serving 1,085 people, well below the Colorado average of 3,400. 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 Pitkin County's drinking water come from?

By primary water source, Pitkin County's active systems draw on groundwater (34, 69%), surface water (9, 18%), groundwater under influence of surface water (4, 8.2%) and purchased surface water (2, 4.1%). Overall, 78% rely mainly on groundwater (including purchased groundwater) and 22% on surface water, compared with 74% and 26% across Colorado. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, City of Aspen, draws primarily on surface water.

What kinds of water systems operate in Pitkin County?

Pitkin County's active systems break down as 26 community systems (53%), 3 non-transient non-community systems (6.1%) and 20 transient non-community systems (41%). 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 (71%), local government (18%) and federal government (10%).

Water systems in Pitkin County

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Active public water systems in Pitkin County, Colorado
#Water systemCountyPopulation servedTypeSource
1Aspen City ofPitkin31,100CommunitySurface water
2Snowmass Village WsdPitkin6,353CommunitySurface water
3Aspen Ski Corp Hi Alpine L9Pitkin2,900Transient non-communitySurface water
4Aspen Ski Corp Garrett GulchPitkin2,630Transient non-communitySurface water
5Aspen Ski Co SundeckPitkin1,801Transient non-communityGroundwater under influence of surface water
6Aspen Ski Corp Elk CampPitkin1,380Transient non-communitySurface water
7Aspen Ski Co Cliff HousePitkin1,002Transient non-communityGroundwater
8Maroon LakePitkin550Transient non-communityGroundwater
9Brush Creek WdPitkin516CommunityPurchased surface water
10Roaring Fork ClubPitkin364Non-transient non-communityGroundwater
11Wj Metro DistrictPitkin324CommunityGroundwater under influence of surface water
12Lazy Glen HoaPitkin322CommunityGroundwater
13Aspen Village MdPitkin300CommunityGroundwater under influence of surface water
14Starwood Metropolitan DistrictPitkin300CommunityGroundwater
15Holland Hills MdPitkin225CommunityGroundwater
16Woody Creek Metropolitan DistrictPitkin220CommunityGroundwater
17Catto Center at ToklatPitkin206Transient non-communitySurface water
18Buttermilk MdPitkin200CommunityPurchased surface water
19Compass Aspen Community SchoolPitkin181Non-transient non-communityGroundwater
20Redstone WsdPitkin180CommunitySurface water
21Gateway MdPitkin160CommunityGroundwater
22Little Elk CreekPitkin150CommunityGroundwater under influence of surface water
23Pine Creek CookhousePitkin144Transient non-communitySurface water
24Carbondale Crystal River KoaPitkin129Transient non-communityGroundwater
25Beyul Retreat Inc.Pitkin112Transient non-communityGroundwater
26T Lazy 7 Guest RanchPitkin111Transient non-communityGroundwater
27Difficult CgPitkin105Transient non-communityGroundwater
28Grace Church of the Roaring Fork ValleyPitkin101Transient non-communityGroundwater
29Pitkin Green HoaPitkin99Transient non-communityGroundwater
30Swiss Village HoaPitkin95CommunityGroundwater
31Chapman CampgroundPitkin90Transient non-communityGroundwater
32Redstone IiPitkin74Transient non-communityGroundwater
33White Horse Springs WdPitkin70CommunityGroundwater
34Kk Water AssocPitkin70CommunityGroundwater
35Orchard EstatesPitkin64CommunityGroundwater
36Avalanche AssocPitkin59Transient non-communityGroundwater
37Prince Creek Village HoaPitkin50CommunityGroundwater
38Wildwood SchoolPitkin50Non-transient non-communityGroundwater
39Redstone I Osgood CgPitkin48Transient non-communityGroundwater
40Phillips Mobile Home ParkPitkin44CommunityGroundwater
41Pitkin Iron HoaPitkin41CommunityGroundwater
42Crystal River Country Estates Water CoPitkin40CommunityGroundwater
43Aspen Ski Co Cafe WestPitkin35Transient non-communityGroundwater
44Wildcat RanchPitkin33CommunitySurface water
45Rivers Bend Condo AssocPitkin32CommunityGroundwater
46Aspen Camp for the DeafPitkin30Transient non-communityGroundwater
47Water View Condominium AssocPitkin30CommunityGroundwater
48West Ranch SubdPitkin28CommunityGroundwater
49Lazy O RanchPitkin27CommunityGroundwater

Pitkin County water systems: frequently asked questions

How many public water systems are in Pitkin County, Colorado?

EPA's SDWIS records file 49 active public water systems under Pitkin County, Colorado: 26 community systems (53%), 3 non-transient non-community systems (6.1%) and 20 transient non-community systems (41%).

Who supplies drinking water in Pitkin County, CO?

The largest community water systems filed under Pitkin County are City of Aspen (31,100 people served), Snowmass Village Wsd (6,353 people served) and Brush Creek Wd (516 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 Pitkin County's drinking water come from groundwater or surface water?

Of the 49 active public water systems in Pitkin County, 78% draw mainly on groundwater and 22% on surface water, counting purchased supplies. The largest system, City of Aspen, uses surface water.

Where can I find a water quality report for Pitkin 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 Pitkin 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 Pitkin 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 Colorado 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 Pitkin County, Colorado”, https://aquacensus.com/water-systems/colorado/pitkin (data as of October 1, 2026).