Fremont County, Iowa — public water systems
At a glance
13 active public water systems are filed under Fremont County, Iowa in EPA's SDWIS records, together reporting 5,711 people served. The largest is Sidney Water Supply, which reports serving 1,077 people. 7 are community water systems serving people where they live; the other 6 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
5.7K
Community systems
7
Groundwater share
92.3%
How does Fremont County compare with other Iowa counties?
Fremont County has the 50th-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 5,711 people served in total, the 88th-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 439 people, well 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 Fremont County's drinking water come from?
By primary water source, Fremont County's active systems draw on groundwater (12, 92%) and surface water (1, 7.7%). Overall, 92% rely mainly on groundwater (including purchased groundwater) and 7.7% 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, Sidney Water Supply, draws primarily on surface water.
What kinds of water systems operate in Fremont County?
Fremont County's active systems break down as 7 community systems (54%), 2 non-transient non-community systems (15%) and 4 transient non-community systems (31%). 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 non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. 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 (62%), private (23%) and state government (15%).
Water systems in Fremont County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Sidney Water Supply | Fremont | 1,077 | Community | Surface water |
| 2 | Sapp Bros Travel Centers | Fremont | 1,074 | Non-transient non-community | Groundwater |
| 3 | Tabor Water Supply | Fremont | 1,014 | Community | Groundwater |
| 4 | Hamburg Water Supply | Fremont | 890 | Community | Groundwater |
| 5 | Farragut Water Supply | Fremont | 490 | Community | Groundwater |
| 6 | Riverton Water Works | Fremont | 250 | Community | Groundwater |
| 7 | Waubonsie St Pk (Overlook Well) | Fremont | 229 | Transient non-community | Groundwater |
| 8 | Randolph Water Works | Fremont | 192 | Community | Groundwater |
| 9 | Thurman Water Works | Fremont | 167 | Community | Groundwater |
| 10 | Fremont Golf Course | Fremont | 129 | Transient non-community | Groundwater |
| 11 | Fox Lake Rv Park LLC | Fremont | 75 | Non-transient non-community | Groundwater |
| 12 | Waubonsie St Pk (Bridle Trail) | Fremont | 66 | Transient non-community | Groundwater |
| 13 | Bartlett Shores | Fremont | 58 | Transient non-community | Groundwater |
Fremont County water systems: frequently asked questions
How many public water systems are in Fremont County, Iowa?
EPA's SDWIS records file 13 active public water systems under Fremont County, Iowa: 7 community systems (54%), 2 non-transient non-community systems (15%) and 4 transient non-community systems (31%).
Who supplies drinking water in Fremont County, IA?
The largest community water systems filed under Fremont County are Sidney Water Supply (1,077 people served), Tabor Water Supply (1,014 people served) and Hamburg Water Supply (890 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 Fremont County's drinking water come from groundwater or surface water?
Of the 13 active public water systems in Fremont County, 92% draw mainly on groundwater and 7.7% on surface water, counting purchased supplies. The largest system, Sidney Water Supply, uses surface water.
Where can I find a water quality report for Fremont 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 Fremont 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 Fremont 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 Fremont County, Iowa”, https://aquacensus.com/water-systems/iowa/fremont (data as of October 1, 2026).