Adams County, Idaho — public water systems

At a glance

16 active public water systems are filed under Adams County, Idaho in EPA's SDWIS records, together reporting 3,761 people served. The largest is City of Council, which reports serving 900 people. 5 are community water systems serving people where they live; the other 11 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

Population served

3.8K

Community systems

Groundwater share

100%

How does Adams County compare with other Idaho counties?

Adams County has the 34th-most active public water systems among the 64 counties listed for active Idaho systems in EPA records; among the 47 with 3 or more systems, the median has 27. Its systems report 3,761 people served in total, the 41st-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 235 people, well below the Idaho average of 899. 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 Adams County's drinking water come from?

By primary water source, Adams County's active systems draw on groundwater (16, 100%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 96% and 4.1% across Idaho. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, City of Council, draws primarily on groundwater.

What kinds of water systems operate in Adams County?

Adams County's active systems break down as 5 community systems (31%), 1 non-transient non-community systems (6.3%) and 10 transient non-community systems (63%). 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 private (69%), federal government (19%) and local government (13%).

Water systems in Adams County

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Active public water systems in Adams County, Idaho
#	Water system	County	Population served	Type	Source
1	Council City of	Adams	900	Community	Groundwater
2	Meadow Creek Property Owners Assn Inc.	Adams	800	Community	Groundwater
3	New Meadows City of	Adams	582	Community	Groundwater
4	Payette Lakes Ski Club	Adams	300	Transient non-community	Groundwater
5	Zims Hot Spring	Adams	300	Transient non-community	Groundwater
6	Brundage Ski Lodge	Adams	250	Transient non-community	Groundwater
7	Hells Canyon Park H C Dam Idaho Power Co	Adams	154	Transient non-community	Groundwater
8	Kings Pines Estates Water System	Adams	96	Community	Groundwater
9	Creek Side Rv Campground	Adams	89	Transient non-community	Groundwater
10	Tamarack Mills LLC Dba Evergreen Forests	Adams	80	Non-transient non-community	Groundwater
11	Mccormick Park	Adams	55	Transient non-community	Groundwater
12	Usfs Cold Springs Campground	Adams	41	Transient non-community	Groundwater
13	Usfs Price Valley Guard Station	Adams	37	Transient non-community	Groundwater
14	Pineridge	Adams	26	Transient non-community	Groundwater
15	Goose Creek Rentals	Adams	26	Community	Groundwater
16	Usfs Grouse Campground	Adams	25	Transient non-community	Groundwater

Adams County water systems: frequently asked questions

How many public water systems are in Adams County, Idaho?

EPA's SDWIS records file 16 active public water systems under Adams County, Idaho: 5 community systems (31%), 1 non-transient non-community systems (6.3%) and 10 transient non-community systems (63%).

Who supplies drinking water in Adams County, ID?

The largest community water systems filed under Adams County are City of Council (900 people served), Meadow Creek Property Owners Assn Inc. (800 people served) and City of New Meadows (582 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 Adams County's drinking water come from groundwater or surface water?

Of the 16 active public water systems in Adams County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, City of Council, uses groundwater.

Where can I find a water quality report for Adams 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. 5 community systems are filed under Adams 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 Adams 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 Idaho 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 Adams County, Idaho”, https://aquacensus.com/water-systems/idaho/adams (data as of October 1, 2026).