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Pottawatomie County, Kansas — public water systems

At a glance

19 active public water systems are filed under Pottawatomie County, Kansas in EPA's SDWIS records, together reporting 23,206 people served. The largest is Pottawatomie Co Rwd 1, which reports serving 7,535 people. 17 are community water systems serving people where they live; the other 2 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

19

Population served

23.2K

Community systems

17

Groundwater share

100%

How does Pottawatomie County compare with other Kansas counties?

Pottawatomie County has the 5th-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 23,206 people served in total, the 25th-largest county figure in the state and 0.8% of the statewide total. The average system here reports serving 1,221 people, about 56% 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 Pottawatomie County's drinking water come from?

By primary water source, Pottawatomie County's active systems draw on groundwater (16, 84%) and purchased groundwater (3, 16%). Overall, all rely mainly on groundwater (including purchased groundwater) and none 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, Pottawatomie Co Rwd 1, draws primarily on groundwater.

What kinds of water systems operate in Pottawatomie County?

Pottawatomie County's active systems break down as 17 community systems (89%) and 2 transient non-community systems (11%). 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 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 (68%) and private (32%).

Water systems in Pottawatomie County

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Active public water systems in Pottawatomie County, Kansas
#Water systemCountyPopulation servedTypeSource
1Pottawatomie Co Rwd 1Pottawatomie7,535CommunityGroundwater
2Wamego, City ofPottawatomie4,860CommunityGroundwater
3St Marys, City ofPottawatomie2,781CommunityGroundwater
4Pottawatomie Co Rwd 3Pottawatomie1,455CommunityGroundwater
5Pottawatomie Co Rwd 4Pottawatomie1,125CommunityGroundwater
6St George, City ofPottawatomie998CommunityGroundwater
7Pottawatomie Co Rwd 2Pottawatomie865CommunityGroundwater
8Timber Creek East Water DistrictPottawatomie850CommunityGroundwater
9Westmoreland, City ofPottawatomie716CommunityPurchased groundwater
10Onaga, City ofPottawatomie671CommunityGroundwater
11Neighbors of Walnut Grove, LLCPottawatomie256CommunityGroundwater
12Olsburg, City ofPottawatomie221CommunityGroundwater
13Walnut Grove Mhc BrooksPottawatomie203CommunityGroundwater
14Belvue, City ofPottawatomie190CommunityPurchased groundwater
15Emmett, City ofPottawatomie170CommunityGroundwater
16Havensville, City ofPottawatomie125CommunityPurchased groundwater
17Rocky Ford Mobile Home CourtPottawatomie120CommunityGroundwater
18Living Water RanchPottawatomie40Transient non-communityGroundwater
19Broken Arrow RanchPottawatomie25Transient non-communityGroundwater

Pottawatomie County water systems: frequently asked questions

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

EPA's SDWIS records file 19 active public water systems under Pottawatomie County, Kansas: 17 community systems (89%) and 2 transient non-community systems (11%).

Who supplies drinking water in Pottawatomie County, KS?

The largest community water systems filed under Pottawatomie County are Pottawatomie Co Rwd 1 (7,535 people served), City of Wamego (4,860 people served) and City of St Marys (2,781 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 Pottawatomie County's drinking water come from groundwater or surface water?

Of the 19 active public water systems in Pottawatomie County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Pottawatomie Co Rwd 1, uses groundwater.

Where can I find a water quality report for Pottawatomie 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. 17 community systems are filed under Pottawatomie 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 Pottawatomie 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 Pottawatomie County, Kansas”, https://aquacensus.com/water-systems/kansas/pottawatomie (data as of October 1, 2026).