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Butler County, Kansas — public water systems

At a glance

21 active public water systems are filed under Butler County, Kansas in EPA's SDWIS records, together reporting 48,500 people served. The largest is City of El Dorado, which reports serving 12,810 people. All 21 are community water systems serving people where they live.

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

Active systems

21

Population served

48.5K

Community systems

21

Groundwater share

9.5%

How does Butler County compare with other Kansas counties?

Butler County has the 3rd-most active public water systems among the 136 counties listed for active Kansas systems in EPA records; among the 101 with 3 or more systems, the median has 9. Its systems report 48,500 people served in total, the 11th-largest county figure in the state and 1.7% of the statewide total. The average system here reports serving 2,310 people, about 18% below the Kansas average of 2,800. 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 Butler County's drinking water come from?

By primary water source, Butler County's active systems draw on purchased surface water (17, 81%), surface water (2, 9.5%), purchased groundwater (1, 4.8%) and groundwater (1, 4.8%). Overall, 9.5% rely mainly on groundwater (including purchased groundwater) and 90% on surface water, compared with 66% and 34% across Kansas. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. The county's largest system, City of El Dorado, draws primarily on surface water.

What kinds of water systems operate in Butler County?

Butler County's active systems break down as 21 community systems (100%). 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. EPA lists their owner types as local government (95%) and private (4.8%).

Water systems in Butler County

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Active public water systems in Butler County, Kansas
#Water systemCountyPopulation servedTypeSource
1El Dorado, City ofButler12,810CommunitySurface water
2Augusta, City ofButler9,267CommunitySurface water
3Butler Co Rwd 5Butler6,457CommunityPurchased surface water
4Rose Hill, City ofButler4,269CommunityPurchased surface water
5Butler Co Rwd 6Butler2,655CommunityPurchased surface water
6Butler Co Rwd 4Butler1,565CommunityPurchased surface water
7Douglass, City ofButler1,551CommunityPurchased surface water
8Butler Co Rwd 2Butler1,534CommunityPurchased surface water
9Butler Co Rwd 3Butler1,494CommunityPurchased surface water
10Butler Co Rwd 7Butler1,455CommunityPurchased surface water
11Towanda, City ofButler1,445CommunityPurchased surface water
12Benton, City ofButler946CommunityPurchased surface water
13Butler Co Rwd 1Butler782CommunityPurchased surface water
14Leon, City ofButler667CommunityPurchased surface water
15Whitewater, City ofButler666CommunityPurchased surface water
16Potwin, City ofButler424CommunityPurchased surface water
17Elbing, City ofButler225CommunityPurchased groundwater
18Cassoday, City ofButler111CommunityPurchased surface water
19Latham, City ofButler101CommunityPurchased surface water
20Simmons Subdivision Sanitation SystemButler75CommunityGroundwater
21Public Wholesale Wsd 8Butler1CommunityPurchased surface water

Butler County water systems: frequently asked questions

How many public water systems are in Butler County, Kansas?

EPA's SDWIS records file 21 active public water systems under Butler County, Kansas: 21 community systems (100%).

Who supplies drinking water in Butler County, KS?

The largest community water systems filed under Butler County are City of El Dorado (12,810 people served), City of Augusta (9,267 people served) and Butler Co Rwd 5 (6,457 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 Butler County's drinking water come from groundwater or surface water?

Of the 21 active public water systems in Butler County, 9.5% draw mainly on groundwater and 90% on surface water, counting purchased supplies. The largest system, City of El Dorado, uses surface water.

Where can I find a water quality report for Butler 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. 21 community systems are filed under Butler 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 Butler 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 Kansas 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 Butler County, Kansas”, https://aquacensus.com/water-systems/kansas/butler (data as of October 1, 2026).