Lyon County, Kansas — public water systems
At a glance
12 active public water systems are filed under Lyon County, Kansas in EPA's SDWIS records, together reporting 30,663 people served. The largest is City of Emporia, which reports serving 24,009 people. All 12 are community water systems serving people where they live.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
12
Population served
30.7K
Community systems
12
Groundwater share
0%
How does Lyon County compare with other Kansas counties?
Lyon County has the 34th-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 30,663 people served in total, the 17th-largest county figure in the state and 1.1% of the statewide total. The average system here reports serving 2,555 people, roughly in line with 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 Lyon County's drinking water come from?
By primary water source, Lyon County's active systems draw on purchased surface water (11, 92%) and surface water (1, 8.3%). Overall, none rely mainly on groundwater (including purchased groundwater) and all 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 Emporia, draws primarily on surface water.
What kinds of water systems operate in Lyon County?
Lyon County's active systems break down as 12 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 (92%) and private (8.3%).
Water systems in Lyon County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Emporia, City of | Lyon | 24,009 | Community | Surface water |
| 2 | Lyon Co Rwd 1 | Lyon | 1,595 | Community | Purchased surface water |
| 3 | Lyon Co Rwd 5 | Lyon | 1,310 | Community | Purchased surface water |
| 4 | Lyon Co Rwd 4 | Lyon | 980 | Community | Purchased surface water |
| 5 | Lyon Co Rwd 2 | Lyon | 750 | Community | Purchased surface water |
| 6 | Olpe, City of | Lyon | 513 | Community | Purchased surface water |
| 7 | Lyon Co Rwd 3 | Lyon | 479 | Community | Purchased surface water |
| 8 | Hartford, City of | Lyon | 356 | Community | Purchased surface water |
| 9 | Park Place Communities Mgt LLC | Lyon | 200 | Community | Purchased surface water |
| 10 | Reading, City of | Lyon | 182 | Community | Purchased surface water |
| 11 | Allen, City of | Lyon | 159 | Community | Purchased surface water |
| 12 | Admire, City of | Lyon | 130 | Community | Purchased surface water |
Lyon County water systems: frequently asked questions
How many public water systems are in Lyon County, Kansas?
EPA's SDWIS records file 12 active public water systems under Lyon County, Kansas: 12 community systems (100%).
Who supplies drinking water in Lyon County, KS?
The largest community water systems filed under Lyon County are City of Emporia (24,009 people served), Lyon Co Rwd 1 (1,595 people served) and Lyon Co Rwd 5 (1,310 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 Lyon County's drinking water come from groundwater or surface water?
Of the 12 active public water systems in Lyon County, none draw mainly on groundwater and all on surface water, counting purchased supplies. The largest system, City of Emporia, uses surface water.
Where can I find a water quality report for Lyon 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. 12 community systems are filed under Lyon 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 Lyon 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 Lyon County, Kansas”, https://aquacensus.com/water-systems/kansas/lyon (data as of October 1, 2026).