Tapcensus

Idaho

Kootenai County drinking water quality

193 active public water systems serve 181,138 people in Kootenai County. 87 are compliant, 106 had at least one EPA violation in the past three years, 5 are designated serious violators, and 4 carry a health flag.

Active systems 193 115 community systems
People served 181K by public water systems
Systems with violations 106 55% of active systems, past 3 years
Serious violators 5 4 systems carry a health flag

Needs attention

Worley City of ID1280206 · Community water system · Serves 591 3 rules violated in the past three years. Unresolved: Groundwater Rule (GWR) and Public Notification Rule.
Woodland Shores Water and Sewer Assn ID1280203 · Community water system · Serves 210 3 rules violated in the past three years
Conkling Marina & Resort ID1280125 · Transient non-community system · Serves 50 3 rules violated in the past three years. Unresolved: Chlorine (MRDL), Groundwater Rule (GWR), and Revised Total Coliform Rule (RTCR).
Powderhorn Water Assn ID1280103 · Transient non-community system · Serves 50 3 rules violated in the past three years. Unresolved: E. coli (Escherichia coli) and Nitrate.
Fernan Estates Corporation ID1280322 · Community water system · Serves 37 2 rules violated in the past three years. Unresolved: Arsenic.
Conkling Park Water Assn ID1280054 · Community water system · Serves 309 1 rule violated in the past three years. Unresolved: Lead and Copper Rule (LCR).
Rose Lake Water Assn ID1280161 · Community water system · Serves 300 3 rules violated in the past three years. Unresolved: Surface Water Treatment Rule (SWTR).

Community water systems

115 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Coeur D Alene City of
 54,115 0 0
Post Falls City of
 20,285 0 0
East Greenacres Irrigation Dist
 11,165 0 0
Ross Point Water Dist
 10,473 0 0
Rathdrum City of
 10,358 2 1
Hayden Lake Irrigation Dist
 9,375 0 0
Avondale Irrigation Dist
 8,785 0 0
Hillside Service Area
 4,140 0 0
Rimrock Service Area
 3,493 0 0
Spirit Lake City of
 2,825 0 0
Dalton Water Assn INC
 2,602 0 0
Twin Lakes Service Area
 2,023 0 0
Hauser Lake Water Assn INC
 1,575 1 1
Bayview Water and Sewer Dist
 1,320 1 1
Hayden Pines Grouse Meadows
 1,188 0 0
Remington Rec Water Dist
 1,104 0 0
Black Rock Utilities INC
 1,014 0 0
Athol City of
 990 0 0
Greenferry Water & Sewer District
 978 2 0
Gem State Spirit Lake East
 843 2 0
Kootenai County Water Dist 1
 843 6 3
Gem State Bar Circle S Ranch
 633 0 0
Worley City of
 591 3 2
Chilco Service Area
 563 0 0
Pine Villa Park and Water Assn
 500 1 0
Emerald Estates Water Assn INC
 495 0 0
Holiday Acres Water Assn
 480 0 0
Leisure Park
 480 0 0
Cave Bay Community System
 458 6 1
Harrison City of
 456 1 1
Pineview Estates Water Dist
 450 1 0
Lone Mountain Estates
 448 0 0
Mountain View Terrace
 445 0 0
Gem State Bitterroot Water Company
 428 1 1
Garwood Water Coop
 410 0 0
Troy Hoffman Water Corp
 367 0 0
Harbor View Estates Water & Sewer Dist
 355 0 0
Conkling Park Water Assn
 309 1 1
Rose Lake Water Assn
 300 3 1
Elkhorn Ranch
 278 1 1
Lost Creek Estates Water
 277 0 0
Arrow Point Park
 275 1 0
Chateaux Water Assn INC
 275 2 1
Royal Highland Water System
 275 2 1
Alpine Meadows Water and Sewer Dist
 265 0 0
Hauser Lake Heights
 257 0 0
Southview Terrace Park
 250 0 0
Ohio Match Road Water Dist
 245 2 1
Hayden Haven / Gem Shores
 236 1 0
Cougar Bay Water Association
 230 0 0
Non-community systems (78: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Silverwood
 3,930 2 1
Idpr Farragut State Park
 2,000 1 0
Itd Huetter Poe
 1,200 2 1
Gozzer Ranch
 970 1 0
Real Life Ministries North
 600 0 0
New Life Community Church
 450 0 0
Kootenai High School Dist 274
 255 0 0
Tonys on the Lake
 250 1 1
Aqua Water System
 220 2 1
Camp Lutherhaven
 220 1 0
Camp Easton Boy Scout Camp
 200 1 0
Camp Mivoden
 200 2 0
City of Post Falls South Park (q Emiln)
 200 0 0
Camp Four Echoes Girl Scouts
 180 0 0
Twinlow Residents Deep Well
 156 4 1
Camp N Sid Sen United Church of Christ
 150 2 1
Camp Sweyolakan Camp Fire
 150 0 0
Harmon Property Owners Association
 148 1 0
Camp Cross
 120 2 1
Tesemini Club
 110 1 1
Sun UP Bay Resort
 106 1 1
Camp Coeur D'alene
 100 0 0
Wolf Lodge Campground
 100 3 1
Canyon School Dist 391
 95 3 2
Red Horse Mountain
 87 0 0
Bloomsburg Trailer Park
 80 1 0
Silver Beach Resort
 80 1 0
Hern Water System
 77 1 1
Black Rock Marina INC
 75 2 1
Lost Moose Campground
 75 1 0
Lacon Water CO OP
 68 0 0
Usfs Bell Bay Campground
 64 1 0
Cove Haven Water Assn
 60 1 0
Shorelands Water Assn
 58 0 0
Coeur D Alene Elks Lodge 1254
 50 1 0
Conkling Marina & Resort
 50 3 0
Powderhorn Water Assn
 50 3 2
Rose Lake Restaurant
 50 1 1
Ross Point Camp & Conference Center
 50 1 0
Schaeffer Addition Water Users Assn
 50 0 0
Sherwood Forest
 50 0 0
Usfs Beauty Creek Campground
 50 0 0
State Line Village
 49 0 0
Nebels Addition Homeowners
 48 0 0
Rockford Bay Summer Homes
 48 0 0
Bennett Bay Inn
 46 1 0
Henry Point HOA INC
 45 1 1
Real Alloy Recycling INC
 44 0 0
Echo Bay Terrace Subd
 42 0 0
Bayview Heights Water Assn
 41 2 1
Blm Mica Bay Boaters Park
 37 0 0
Crystal Springs Water System
 37 0 0
Sunrise Hills Water Assn INC
 37 2 0
All Seasons Lake Owners Assn
 35 0 0
Silver Water Assn
 35 0 0
Coeur D'alene Lake Estates
 34 0 0
Stoneridge Pines
 32 1 1
Crows Nest Water System
 30 0 0
Jmt Xpressmart Rose Lake
 30 2 1
Peace Lutheran Church
 30 0 0
Westview Subd
 30 0 0
Vista Bay West INC
 28 1 0
Pleasant View Water Association INC
 26 1 0
Silver Beach Marina
 26 1 0
Athol Baptist Church
 25 1 0
Blm Killarney Lake Public Access
 25 0 0
Cedar Mountain Farm B&b
 25 2 1
Forest Shores Assn
 25 1 1
Hauser Smoke Shop
 25 1 1
ID Pur-Pose Dba Bumblebee
 25 0 0
Idaho Light Industrial
 25 0 0
Idpr Old Mission SP
 25 0 0
Jmt Xpressmart Cataldo
 25 1 0
Jones Chevron
 25 3 2
Pilot Rock Assn INC
 25 1 0
Squaw Bay Store and Resort
 25 2 0
The Lodge at Carlin Bay
 25 3 1
Usfs Mokins Bay Campground
 25 2 1
Inactive systems (167, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Idaho records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.