How many water violations are in Boise County?

Boise County has 3,508 total drinking water violations across 56 water systems, of which 783 are health-based violations. 100.0% of systems have at least one violation.

How many people get water from Boise County systems?

Water systems in Boise County serve approximately 7,343 people through 56 public water systems.

Has PFAS been detected in Boise County water?

No UCMR5 PFAS testing results are in this extract for Boise County water systems.

What types of water sources supply Boise County?

Water systems in Boise County use GW (49 systems), SW (7 systems) as their primary water sources.

Are health-based violations serious?

Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 22.3% of Boise County's violations are health-based. Among counties with any SDWIS violations, this extract puts Boise County in the middle health-based share band. Not all violations indicate immediate health risk, but they require corrective action.

Where does Boise County sit among U.S. counties for water-system population?

According to EPA SDWIS county population served used on /counties, Boise County ranks #2,582 of 3,254 counties by people served, and #29 of 44 counties in Idaho. Ordinals use the same total_population DESC sort as the counties directory. See /methodology#corpus-placement.

Counties → Idaho

Boise County, Idaho

Compiled by PlainWater · May 15, 2026

SDWIS compliance plate

Sheet ID015 · Boise County 56 sys · 3,508 viol · #2582/3254

VIOL-SEVERE · HEALTH-MID · RANK-LOWER · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-MID · BOOK-MOST

VIOL-SEVERE 100.0% flagged
HEALTH-MID 22.3% health
RANK-LOWER #2582/3254
PHOTO-FINISH ±0.0 pp
PFAS-NONE No UCMR5 set
SRC-GW GW lead 88%
SYS-MID 56 systems
BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Latah County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Boise County ranks #2,582 of 3,254 counties by people served, and #29 of 44 counties in Idaho. See methodology · corpus placement.

Boise County standing, mid-flagged corpus third

Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 22.3% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Boise County . Population served ranks #2,582 of 3,254 · #29 of 44 in Idaho.

Water Systems

System Name	Population	Violations	PFAS
Idpr Lucky Peak Sp Spring Shores	780	23	-
Bogus Basin Mtn Resort	750	196	-
Horseshoe Bend Water Supply	750	122	-
Wilderness Ranch Owners Association Inc	525	264	-
Idaho City Water Dept	478	205	-
Terrace Lakes Water Company	475	140	-
Mountain View Water and Road Assn	305	104	-
Castle Mountain Creeks Owners Assn	250	241	-
Garden Valley High School	200	44	-
Duquette Pines Homeowners Association	163	62	-
Crouch Community Church	160	16	-
Scriver Woods Homeowners Assn	150	128	-
Mores Creek Rim Ranch Water Dist	140	146	-
Rivers Point Property Owners Assn	140	47	-
Valley HI Estates	140	35	-
Idaho City Lds Meeting House	108	14	-
Osprey	100	64	-
Garden Valley Lds Meeting House	100	19	-
Calvary Chapel of Garden Valley	100	2	-
Starlight Mountain Theater	100	6	-
Mountain Shadows HOA Inc.	89	91	-
Garden Valley Ranchettes Homeowners	78	213	-
Corps Macks Creek Park	75	15	-
Karney Lakes Club	70	17	-
Ranch Subd	65	21	-
Sawtooth Lodge	65	33	-
Horseshu Vue Ranch Subd	51	177	-
Clear Creek Lodge	50	86	-
Camp Glenwood Church Camp	50	14	-
Pinetop Church Camp	50	12	-
River Canyon Retreat	50	46	-
Shilo Ranch Estates	44	12	-
Ten Ax Subdivision Water Assn	44	15	-
Scenic Properties Water Assn Inc	40	84	-
River at Pine Tree	40	15	-
Boise Holcomb Water Users Assoc. Inc	36	20	-
Cascade Raft and Kayak	35	14	-
Usfs Lowman Ranger Station Pc	35	64	-
HI de Ho Sports Trailer Club	30	4	-
Lowman Inn	30	128	-
Project Patch	30	8	-
Crouch Boardwalk	25	34	-
Garden Valley Chevron	25	34	-
Sourdough Lodge	25	55	-
South Fork Lodge	25	119	-
The Springs	25	19	-
Banks Store and Cafe	25	92	-
Haven Hot Springs	25	61	-
Garden Valley Motel	25	29	-
Lowman RV Park	25	2	-

Compare beyond Idaho

Mid-flagged peers for Boise County

Cross-state counties nearest Boise County on flagged-system share (100.0%) and cumulative violation count (3,508). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Compiled by PlainWater, Drinking Water Quality Editorial Process · May 15, 2026

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.