Skip to content
AquaCensus

Logan County, Colorado — public water systems

At a glance

13 active public water systems are filed under Logan County, Colorado in EPA's SDWIS records, together reporting 17,903 people served. The largest is City of Sterling, which reports serving 15,100 people. 8 are community water systems serving people where they live; the other 5 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

13

Population served

17.9K

Community systems

8

Groundwater share

100%

How does Logan County compare with other Colorado counties?

Logan County has the 44th-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 17,903 people served in total, the 32nd-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 1,377 people, about 59% 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 Logan County's drinking water come from?

By primary water source, Logan County's active systems draw on groundwater (12, 92%) and groundwater under influence of surface water (1, 7.7%). Overall, all rely mainly on groundwater (including purchased groundwater) and none 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 Sterling, draws primarily on groundwater under influence of surface water.

What kinds of water systems operate in Logan County?

Logan County's active systems break down as 8 community systems (62%), 1 non-transient non-community systems (7.7%) and 4 transient non-community systems (31%). 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 (23%) and state government (15%).

Water systems in Logan County

🔒 Create a free account to export CSV
Active public water systems in Logan County, Colorado
#Water systemCountyPopulation servedTypeSource
1Sterling City ofLogan15,100CommunityGroundwater under influence of surface water
2Fleming Town ofLogan446CommunityGroundwater
3Reata Travel Stop - CrookLogan415Transient non-communityGroundwater
4Caliche SchoolLogan350Non-transient non-communityGroundwater
5Iliff Town ofLogan328CommunityGroundwater
6Peetz Town ofLogan295CommunityGroundwater
7Merino Town ofLogan235CommunityGroundwater
8Sage Pointe HoaLogan194CommunityGroundwater
9Crook Town ofLogan182CommunityGroundwater
10Sky Ranch GolfLogan144Transient non-communityGroundwater
11North Sterling Res Sp SouthLogan135Transient non-communityGroundwater
12North Sterling Res Sp NorthLogan50Transient non-communityGroundwater
13Sunnyslope HomeownersLogan29CommunityGroundwater

Logan County water systems: frequently asked questions

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

EPA's SDWIS records file 13 active public water systems under Logan County, Colorado: 8 community systems (62%), 1 non-transient non-community systems (7.7%) and 4 transient non-community systems (31%).

Who supplies drinking water in Logan County, CO?

The largest community water systems filed under Logan County are City of Sterling (15,100 people served), Town of Fleming (446 people served) and Town of Iliff (328 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 Logan County's drinking water come from groundwater or surface water?

Of the 13 active public water systems in Logan County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, City of Sterling, uses groundwater under influence of surface water.

Where can I find a water quality report for Logan 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. 8 community systems are filed under Logan 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 Logan 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 Logan County, Colorado”, https://aquacensus.com/water-systems/colorado/logan (data as of October 1, 2026).