PlainWater
Counties → Idaho

Twin Falls County, Idaho

Water Systems
54
Population Served
76,016
Total Violations
2,851
683 health-based
PFAS Detected
2
of 2 tested

Violation Analysis

96.3%
Systems with Violations
52.8
Avg Violations per System
24.0%
Health-Based Violations

Water Source Types

GW
50 systems (93%)

PFAS Contamination

2
Systems Tested
2
PFAS Detected
100.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Twin Falls Idaho water systems by violation status, EPA SDWIS records.

No violations on record (1) One or more violations (49)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Twin Falls City Of 56,121 164 Clean
Kimberly City Of 5,359 48 -
Buhl City Of 4,518 117 Clean
Filer Water Works 2,858 276 -
Hansen City Of 1,200 13 -
Lds Church Kimberly SC 659 40 -
Amalgamated Sugar Twin Falls 460 45 -
Lds Church Murtaugh 451 6 -
Twin Falls City County Airport 410 55 -
Chobani 390 15 -
Valley View Country School 295 66 -
Castleford City Of 275 47 -
Hollister City Of 220 107 -
Kanaka Rapids Ranch Water System Inc 220 143 -
Shoshone Falls Park Twin Falls 200 7 -
Community Christian Church 150 20 -
Twin Falls Gun Club 150 6 -
Rock Ledge Estates 150 2 -
Meander Point Subd 140 110 -
Murtaugh City Of 130 69 -
Countryside Village 108 91 -
Dierkes 100 8 -
Thousand Springs Resort 100 20 -
Rock Creek General Store 100 93 -
Hilltop Adventist Church 90 65 -
Deep Creek Mennonite School 75 51 -
Rogerson Water Dist 75 70 -
Curry Junction 75 81 -
S&s 75 0 -
Legacy Fields 51 19 -
Balanced Rock Park 50 27 -
Clover Trinity Lutheran School 50 46 -
Rock Creek Park Twin Falls County 50 63 -
Sportsmans River Resort 50 25 -
Oasis Stop N Go 50 29 -
Murtaugh Lake Park 50 17 -
Centennial Waterfront Park 50 16 -
Usda Ars 46 104 -
Miracle Hot Springs 35 12 -
Kws Seeds LLC 30 6 -
Banburys Hot Springs 25 10 -
Blm Salmon Dam Recreation Site 25 9 -
Camp Tawakani 25 93 -
Curry Trailer Park 25 13 -
Kum Ba Yah Church Camp 25 83 -
Nat Soo Pah 25 75 -
Train Station Pizza 25 100 -
Magic Valley Speedway 25 56 -
Good 2 Go Star Stop 25 46 -
Pleasant Valley Golf Course 25 47 -

Other Counties in Idaho

Ada County
87 systems · 511,181 served · 5,380 violations
Canyon County
143 systems · 214,619 served · 9,692 violations
Kootenai County
195 systems · 178,648 served · 7,546 violations
Bonneville County
135 systems · 138,969 served · 4,633 violations
Bannock County
49 systems · 83,349 served · 2,778 violations
Madison County
33 systems · 50,343 served · 998 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Twin Falls County? ▼
Twin Falls County has 2,851 total drinking water violations across 54 water systems, of which 683 are health-based violations. 96.3% of systems have at least one violation.
How many people get water from Twin Falls County systems? ▼
Water systems in Twin Falls County serve approximately 76,016 people through 54 public water systems.
Has PFAS been detected in Twin Falls County water? ▼
Of 2 water systems tested for PFAS in Twin Falls County, 2 had PFAS detected (100.0% detection rate).
What types of water sources supply Twin Falls County? ▼
Water systems in Twin Falls County use GW (50 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. 24.0% of Twin Falls County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - 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 Editorial

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.