Geary County, Kansas — public water systems

At a glance

16 active public water systems are filed under Geary County, Kansas in EPA's SDWIS records, together reporting 59,609 people served. The largest is Frusi Water Treatment Plant, which reports serving 35,784 people. 8 are community water systems serving people where they live; the other 8 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

Population served

59.6K

Community systems

Groundwater share

93.8%

How does Geary County compare with other Kansas counties?

Geary County has the 14th-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 59,609 people served in total, the 8th-largest county figure in the state and 2% of the statewide total. The average system here reports serving 3,726 people, about 33% above 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 Geary County's drinking water come from?

By primary water source, Geary County's active systems draw on groundwater (12, 75%), purchased groundwater (3, 19%) and surface water (1, 6.3%). Overall, 94% rely mainly on groundwater (including purchased groundwater) and 6.3% on surface water, compared with 66% and 34% across Kansas. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Frusi Water Treatment Plant, draws primarily on groundwater.

What kinds of water systems operate in Geary County?

Geary County's active systems break down as 8 community systems (50%), 1 non-transient non-community systems (6.3%) and 7 transient non-community systems (44%). 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 (38%), federal government (38%) and private (25%).

Water systems in Geary County

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Active public water systems in Geary County, Kansas
#	Water system	County	Population served	Type	Source
1	Frusi Water Treatment Plant	Geary	35,784	Community	Groundwater
2	Junction City, City of	Geary	19,167	Community	Groundwater
3	Grandview Plaza, City of	Geary	1,663	Community	Purchased groundwater
4	Geary Co Rwd 4	Geary	1,005	Community	Groundwater
5	Frusi Multi Purpose Range Complex	Geary	970	Non-transient non-community	Groundwater
6	Milford, City of	Geary	400	Community	Purchased groundwater
7	Geary Co Rwd 1	Geary	216	Community	Purchased groundwater
8	Miller Mobile Home Park	Geary	113	Community	Groundwater
9	Geary Co Water District 2	Geary	78	Community	Groundwater
10	Kansas 4-H Foundation, Inc.	Geary	63	Transient non-community	Surface water
11	B J`S 66	Geary	25	Transient non-community	Groundwater
12	Us Army Coe Milford Timber Creek 2	Geary	25	Transient non-community	Groundwater
13	Us Army Coe Milford Curtis Creek	Geary	25	Transient non-community	Groundwater
14	Frusi Aqt Range Complex	Geary	25	Transient non-community	Groundwater
15	Us Army Coe Milford Rolling Hills	Geary	25	Transient non-community	Groundwater
16	Thunderbird Marina	Geary	25	Transient non-community	Groundwater

Geary County water systems: frequently asked questions

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

EPA's SDWIS records file 16 active public water systems under Geary County, Kansas: 8 community systems (50%), 1 non-transient non-community systems (6.3%) and 7 transient non-community systems (44%).

Who supplies drinking water in Geary County, KS?

The largest community water systems filed under Geary County are Frusi Water Treatment Plant (35,784 people served), City of Junction City (19,167 people served) and City of Grandview Plaza (1,663 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 Geary County's drinking water come from groundwater or surface water?

Of the 16 active public water systems in Geary County, 94% draw mainly on groundwater and 6.3% on surface water, counting purchased supplies. The largest system, Frusi Water Treatment Plant, uses groundwater.

Where can I find a water quality report for Geary 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 Geary 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 Geary 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 Geary County, Kansas”, https://aquacensus.com/water-systems/kansas/geary (data as of October 1, 2026).