Edmunds County, South Dakota — public water systems
At a glance
6 active public water systems are filed under Edmunds County, South Dakota in EPA's SDWIS records, together reporting 2,720 people served. The largest is Ipswich, which reports serving 928 people. All 6 are community water systems serving people where they live.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
6
Population served
2.7K
Community systems
6
Groundwater share
16.7%
How does Edmunds County compare with other South Dakota counties?
Edmunds County has the 22nd-most active public water systems among the 73 counties listed for active South Dakota systems in EPA records; among the 48 with 3 or more systems, the median has 6. Its systems report 2,720 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 453 people, well below the South Dakota average of 1,387. 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 Edmunds County's drinking water come from?
By primary water source, Edmunds County's active systems draw on purchased surface water (5, 83%) and groundwater (1, 17%). Overall, 17% rely mainly on groundwater (including purchased groundwater) and 83% on surface water, compared with 76% and 24% across South Dakota. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. The county's largest system, Ipswich, draws primarily on purchased surface water.
What kinds of water systems operate in Edmunds County?
Edmunds County's active systems break down as 6 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 (83%) and private (17%).
Water systems in Edmunds County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Ipswich | Edmunds | 928 | Community | Purchased surface water |
| 2 | Mina Lake Sanitary District | Edmunds | 863 | Community | Purchased surface water |
| 3 | Bowdle | Edmunds | 470 | Community | Purchased surface water |
| 4 | Roscoe | Edmunds | 269 | Community | Purchased surface water |
| 5 | Hosmer | Edmunds | 164 | Community | Purchased surface water |
| 6 | Boulder Colony | Edmunds | 26 | Community | Groundwater |
Also serving Edmunds County
These systems serve several counties, including Edmunds County. EPA lists another county first for them, so they are not included in the counts above.
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Web Water Development Association | Walworth + 9 more | 20,750 | Community | Surface water |
Edmunds County water systems: frequently asked questions
How many public water systems are in Edmunds County, South Dakota?
EPA's SDWIS records file 6 active public water systems under Edmunds County, South Dakota: 6 community systems (100%). At least 1 more system is listed under another county but also serve Edmunds County.
Who supplies drinking water in Edmunds County, SD?
The largest community water systems filed under Edmunds County are Ipswich (928 people served), Mina Lake Sanitary District (863 people served) and Bowdle (470 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 Edmunds County's drinking water come from groundwater or surface water?
Of the 6 active public water systems in Edmunds County, 17% draw mainly on groundwater and 83% on surface water, counting purchased supplies. The largest system, Ipswich, uses purchased surface water.
Where can I find a water quality report for Edmunds 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. 6 community systems are filed under Edmunds 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 Edmunds 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 South Dakota 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 Edmunds County, South Dakota”, https://aquacensus.com/water-systems/south-dakota/edmunds (data as of October 1, 2026).