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Emmet County, Iowa — public water systems

At a glance

12 active public water systems are filed under Emmet County, Iowa in EPA's SDWIS records, together reporting 8,060 people served. The largest is Estherville Water Treatment Plant, which reports serving 5,904 people. 7 are community water systems serving people where they live; the other 5 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

12

Population served

8.1K

Community systems

7

Groundwater share

100%

How does Emmet County compare with other Iowa counties?

Emmet County has the 59th-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 8,060 people served in total, the 74th-largest county figure in the state and 0.3% of the statewide total. The average system here reports serving 672 people, about 61% 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 Emmet County's drinking water come from?

By primary water source, Emmet County's active systems draw on groundwater (10, 83%) and purchased groundwater (2, 17%). 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, Estherville Water Treatment Plant, draws primarily on groundwater.

What kinds of water systems operate in Emmet County?

Emmet County's active systems break down as 7 community systems (58%) and 5 transient non-community systems (42%). 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 (67%) and private (33%).

Water systems in Emmet County

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Active public water systems in Emmet County, Iowa
#Water systemCountyPopulation servedTypeSource
1Estherville Water Treatment PlantEmmet5,904CommunityGroundwater
2Armstrong Water SupplyEmmet918CommunityGroundwater
3Ringsted Water SupplyEmmet365CommunityGroundwater
4Wallingford Municipal WaterworksEmmet170CommunityPurchased groundwater
5Droessler'S WaterEmmet158CommunityPurchased groundwater
6Culvers of PetoskeyEmmet125Transient non-communityGroundwater
7Ingham Lake Bible CampEmmet100Transient non-communityGroundwater
8Wolden Recreation AreaEmmet100Transient non-communityGroundwater
9Tuttle Lake-Emmet ConservationEmmet75Transient non-communityGroundwater
10Dolliver Muni Water SupplyEmmet65CommunityGroundwater
11Oak ShoresEmmet55CommunityGroundwater
12Iowa Lake - Emmet Co ConservationEmmet25Transient non-communityGroundwater

Emmet County water systems: frequently asked questions

How many public water systems are in Emmet County, Iowa?

EPA's SDWIS records file 12 active public water systems under Emmet County, Iowa: 7 community systems (58%) and 5 transient non-community systems (42%).

Who supplies drinking water in Emmet County, IA?

The largest community water systems filed under Emmet County are Estherville Water Treatment Plant (5,904 people served), Armstrong Water Supply (918 people served) and Ringsted Water Supply (365 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 Emmet County's drinking water come from groundwater or surface water?

Of the 12 active public water systems in Emmet County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Estherville Water Treatment Plant, uses groundwater.

Where can I find a water quality report for Emmet 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. 7 community systems are filed under Emmet 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 Emmet 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 Emmet County, Iowa”, https://aquacensus.com/water-systems/iowa/emmet (data as of October 1, 2026).