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Idaho Water Quality

2,005 public water systems serving 1,743,912 people.

Water Systems
2,005
Total Violations
104,850
Violation Rate
96.1%
PFAS Detection
66.7%
40 of 60 tested

Largest Water Systems

VEOLIA WATER IDAHO
BOISE, ID · 264,978 served
240 violations
MERIDIAN WATER DEPT
MERIDIAN, ID · 147,340 served
64 violations
NAMPA CITY OF
NAMPA, ID · 100,200 served
262 violations
CALDWELL CITY OF
CALDWELL, ID · 74,000 served
518 violations
IDAHO FALLS CITY OF
IDAHO FALLS, ID · 69,450 served
144 violations
POCATELLO CITY OF
POCATELLO, ID · 58,231 served
961 violations
TWIN FALLS CITY OF
TWIN FALLS, ID · 56,121 served
164 violations
COEUR D ALENE CITY OF
COEUR D ALENE, ID · 54,115 served
90 violations
REXBURG CITY OF
REXBURG, ID · 40,462 served
116 violations
KUNA CITY OF
KUNA, ID · 32,038 served
554 violations
MOSCOW WATER DEPT
MOSCOW, ID · 26,000 served
73 violations
FALLS WATER COMPANY INC
IDAHO FALLS, ID · 22,650 served
196 violations
POST FALLS CITY OF
POST FALLS, ID · 20,285 served
658 violations
LEWISTON ORCHARDS IRRIGATION DIST
LEWISTON, ID · 20,000 served
180 violations
AMMON CITY OF
AMMON, ID · 17,338 served
418 violations
CHUBBUCK CITY OF
CHUBBUCK, ID · 15,842 served
37 violations
LEWISTON CITY OF
LEWISTON, ID · 15,001 served
2 violations
MOUNTAIN HOME, CITY OF
MOUNTAIN HOME, ID · 14,651 served
249 violations
STAR SEWER AND WATER DIST WATER SYSTEM
STAR, ID · 14,000 served
30 violations
MIDDLETON CITY OF
MIDDLETON, ID · 13,190 served
81 violations

Most Violations

#1 VALLEY VIEW SUBDIVISION REXBURG
1,278
#2 CLEARWATER WATER DIST CLEARWATER
1,066
#3 POCATELLO CITY OF POCATELLO
961
#4 ASPEN RIDGE SUBD REXBURG
868
#5 SYMMS FRUIT RANCH INC CALDWELL
682
#6 MISSION CREEK WATER ASSN BONNERS FERRY
674
#7 POST FALLS CITY OF POST FALLS
658
#8 THE LEARNING ACADEMY DRIGGS
605
#9 MOUNTAIN HOME AIR FORCE BASE MOUNTAIN HOME AFB
574
#10 KUNA CITY OF KUNA
554
#11 SMILEY CREEK WATER USERS ASSN INC KETCHUM
553
#12 RED ROCK WATER LLC LEWISTON
521
#13 CALDWELL CITY OF CALDWELL
518
#14 PARTNERS PRODUCE PAYETTE
515
#15 SHOTGUN CHEROKEE SUBD 5 REXBURG
465

Counties in Idaho

Ada
87 systems · 511,181 served · 5,380 violations
Canyon
143 systems · 214,619 served · 9,692 violations
Kootenai
195 systems · 178,648 served · 7,546 violations
Bonneville
135 systems · 138,969 served · 4,633 violations
Bannock
49 systems · 83,349 served · 2,778 violations
Twin Falls
54 systems · 76,016 served · 2,851 violations
Madison
33 systems · 50,343 served · 998 violations
Latah
35 systems · 41,303 served · 2,229 violations
Nez Perce
25 systems · 39,929 served · 1,887 violations
Bonner
152 systems · 39,891 served · 5,382 violations
Bingham
74 systems · 36,624 served · 3,178 violations
Elmore
45 systems · 26,866 served · 3,868 violations
Blaine
46 systems · 23,812 served · 2,888 violations
Payette
20 systems · 19,821 served · 2,033 violations
Jefferson
63 systems · 19,584 served · 2,465 violations
Cassia
50 systems · 19,063 served · 3,276 violations
Jerome
24 systems · 17,778 served · 1,336 violations
Shoshone
37 systems · 15,611 served · 1,510 violations
Minidoka
28 systems · 15,130 served · 2,351 violations
Fremont
91 systems · 14,857 served · 6,494 violations
Valley
57 systems · 12,433 served · 1,987 violations
Boundary
20 systems · 11,485 served · 1,933 violations
Franklin
22 systems · 11,019 served · 2,401 violations
Idaho
58 systems · 10,236 served · 3,546 violations
Gem
34 systems · 9,813 served · 1,883 violations
Gooding
26 systems · 9,512 served · 1,336 violations
Bear Lake
33 systems · 7,887 served · 1,296 violations
Teton
26 systems · 7,429 served · 1,597 violations
Boise
56 systems · 7,343 served · 3,508 violations
Benewah
15 systems · 7,006 served · 998 violations

Showing top 30 of 44 counties.

View all 2,005 systems in Idaho →