Nemaha County, Kansas — public water systems
At a glance
11 active public water systems are filed under Nemaha County, Kansas in EPA's SDWIS records, together reporting 9,620 people served. The largest is Nemaha Co Rwd 3, which reports serving 2,800 people. All 11 are community water systems serving people where they live.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
11
Population served
9.6K
Community systems
11
Groundwater share
81.8%
How does Nemaha County compare with other Kansas counties?
Nemaha County has the 36th-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 9,620 people served in total, the 39th-largest county figure in the state and 0.3% of the statewide total. The average system here reports serving 875 people, well 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 Nemaha County's drinking water come from?
By primary water source, Nemaha County's active systems draw on groundwater (6, 55%), purchased groundwater (3, 27%) and surface water (2, 18%). Overall, 82% rely mainly on groundwater (including purchased groundwater) and 18% 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, Nemaha Co Rwd 3, draws primarily on groundwater.
What kinds of water systems operate in Nemaha County?
Nemaha County's active systems break down as 11 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 (100%).
Water systems in Nemaha County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Nemaha Co Rwd 3 | Nemaha | 2,800 | Community | Groundwater |
| 2 | Sabetha, City of | Nemaha | 2,519 | Community | Surface water |
| 3 | Seneca, City of | Nemaha | 2,130 | Community | Surface water |
| 4 | Centralia, City of | Nemaha | 486 | Community | Purchased groundwater |
| 5 | Nemaha Co Rwd 4 | Nemaha | 448 | Community | Groundwater |
| 6 | Nemaha Co Rwd 1 | Nemaha | 350 | Community | Groundwater |
| 7 | Wetmore, City of | Nemaha | 348 | Community | Groundwater |
| 8 | Corning, City of | Nemaha | 213 | Community | Purchased groundwater |
| 9 | Bern, City of | Nemaha | 163 | Community | Groundwater |
| 10 | Goff, City of | Nemaha | 105 | Community | Purchased groundwater |
| 11 | Oneida, City of | Nemaha | 58 | Community | Groundwater |
Nemaha County water systems: frequently asked questions
How many public water systems are in Nemaha County, Kansas?
EPA's SDWIS records file 11 active public water systems under Nemaha County, Kansas: 11 community systems (100%).
Who supplies drinking water in Nemaha County, KS?
The largest community water systems filed under Nemaha County are Nemaha Co Rwd 3 (2,800 people served), City of Sabetha (2,519 people served) and City of Seneca (2,130 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 Nemaha County's drinking water come from groundwater or surface water?
Of the 11 active public water systems in Nemaha County, 82% draw mainly on groundwater and 18% on surface water, counting purchased supplies. The largest system, Nemaha Co Rwd 3, uses groundwater.
Where can I find a water quality report for Nemaha 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. 11 community systems are filed under Nemaha 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 Nemaha 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
- Washington County· 12 systems
- Jackson County· 12 systems
- Lyon County· 12 systems
- Russell County· 12 systems
- Pratt County· 11 systems
- Chautauqua County· 10 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 Nemaha County, Kansas”, https://aquacensus.com/water-systems/kansas/nemaha (data as of October 1, 2026).