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
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | El Dorado, City of | Butler | 12,810 | Community | Surface water |
| 2 | Augusta, City of | Butler | 9,267 | Community | Surface water |
| 3 | Butler Co Rwd 5 | Butler | 6,457 | Community | Purchased surface water |
| 4 | Rose Hill, City of | Butler | 4,269 | Community | Purchased surface water |
| 5 | Butler Co Rwd 6 | Butler | 2,655 | Community | Purchased surface water |
| 6 | Butler Co Rwd 4 | Butler | 1,565 | Community | Purchased surface water |
| 7 | Douglass, City of | Butler | 1,551 | Community | Purchased surface water |
| 8 | Butler Co Rwd 2 | Butler | 1,534 | Community | Purchased surface water |
| 9 | Butler Co Rwd 3 | Butler | 1,494 | Community | Purchased surface water |
| 10 | Butler Co Rwd 7 | Butler | 1,455 | Community | Purchased surface water |
| 11 | Towanda, City of | Butler | 1,445 | Community | Purchased surface water |
| 12 | Benton, City of | Butler | 946 | Community | Purchased surface water |
| 13 | Butler Co Rwd 1 | Butler | 782 | Community | Purchased surface water |
| 14 | Leon, City of | Butler | 667 | Community | Purchased surface water |
| 15 | Whitewater, City of | Butler | 666 | Community | Purchased surface water |
| 16 | Potwin, City of | Butler | 424 | Community | Purchased surface water |
| 17 | Elbing, City of | Butler | 225 | Community | Purchased groundwater |
| 18 | Cassoday, City of | Butler | 111 | Community | Purchased surface water |
| 19 | Latham, City of | Butler | 101 | Community | Purchased surface water |
| 20 | Simmons Subdivision Sanitation System | Butler | 75 | Community | Groundwater |
| 21 | Public Wholesale Wsd 8 | Butler | 1 | Community | Purchased 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
- All Kansas public water systems· 1,041 active
- Sedgwick County· 29 systems
- Reno County· 25 systems
- Jefferson County· 19 systems
- Pottawatomie County· 19 systems
- Sumner County· 19 systems
- Montgomery County· 18 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
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).