Plymouth County, Iowa — public water systems
At a glance
13 active public water systems are filed under Plymouth County, Iowa in EPA's SDWIS records, together reporting 17,703 people served. The largest is Lemars Water Department, which reports serving 10,606 people. 10 are community water systems serving people where they live; the other 3 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
13
Population served
17.7K
Community systems
10
Groundwater share
100%
How does Plymouth County compare with other Iowa counties?
Plymouth County has the 54th-most active public water systems among the 114 counties listed for active Iowa systems in EPA records; among the 96 with 3 or more systems, the median has 14. Its systems report 17,703 people served in total, the 33rd-largest county figure in the state and 0.6% of the statewide total. The average system here reports serving 1,362 people, about 21% below the Iowa average of 1,718. 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 Plymouth County's drinking water come from?
By primary water source, Plymouth County's active systems draw on groundwater (11, 85%) and purchased groundwater (2, 15%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 92% and 7.8% across Iowa. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Lemars Water Department, draws primarily on groundwater.
What kinds of water systems operate in Plymouth County?
Plymouth County's active systems break down as 10 community systems (77%) and 3 transient non-community systems (23%). 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 (77%) and private (23%).
Water systems in Plymouth County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Lemars Water Department | Plymouth | 10,606 | Community | Groundwater |
| 2 | Remsen Municipal Utilities | Plymouth | 1,678 | Community | Groundwater |
| 3 | Akron, City of | Plymouth | 1,558 | Community | Groundwater |
| 4 | Kingsley Water Supply | Plymouth | 1,396 | Community | Groundwater |
| 5 | Hinton Water Supply | Plymouth | 935 | Community | Groundwater |
| 6 | Merrill Municipal Water Supply | Plymouth | 717 | Community | Groundwater |
| 7 | Country Celebrations Event Center | Plymouth | 200 | Transient non-community | Groundwater |
| 8 | Brunsville Municipal Water Supply | Plymouth | 129 | Community | Purchased groundwater |
| 9 | Westfield Water Supply | Plymouth | 123 | Community | Groundwater |
| 10 | Hidden Acres Golf Course LLC | Plymouth | 100 | Transient non-community | Groundwater |
| 11 | Oyens Water Supply | Plymouth | 92 | Community | Groundwater |
| 12 | Hole N the Wall Lodge | Plymouth | 90 | Transient non-community | Groundwater |
| 13 | Craig Water Works | Plymouth | 79 | Community | Purchased groundwater |
Plymouth County water systems: frequently asked questions
How many public water systems are in Plymouth County, Iowa?
EPA's SDWIS records file 13 active public water systems under Plymouth County, Iowa: 10 community systems (77%) and 3 transient non-community systems (23%).
Who supplies drinking water in Plymouth County, IA?
The largest community water systems filed under Plymouth County are Lemars Water Department (10,606 people served), Remsen Municipal Utilities (1,678 people served) and City of Akron (1,558 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 Plymouth County's drinking water come from groundwater or surface water?
Of the 13 active public water systems in Plymouth County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Lemars Water Department, uses groundwater.
Where can I find a water quality report for Plymouth 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. 10 community systems are filed under Plymouth 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 Plymouth 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 Iowa 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 Plymouth County, Iowa”, https://aquacensus.com/water-systems/iowa/plymouth (data as of October 1, 2026).