County · Idaho
Kootenai County, Idaho: drinking water records
Explore EPA records for 116 community water systems across 11 ZIP codes in Kootenai County, then find water-testing resources and available recent monitoring-station readings.
Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages
Drinking-water records
EPA survey and compliance records are historical reports. UCMR 5 results are available for 8 of the 116 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems in this county
All 116 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Post Falls City of ID1280147 | 20,285 | 540 | 0 | 1 | 1 ppbbelow the action level |
| Coeur D Alene City of ID1280053 | 54,115 | 660 | 1 | 0 | 2 ppbbelow the action level |
| East Greenacres Irrigation Dist ID1280064 | 11,165 | 180 | 0 | 0 | 3 ppbbelow the action level |
| Rathdrum City of ID1280152 | 10,358 | 300 | 2 | 0 | 1 ppbbelow the action level |
| Hayden Lake Irrigation Dist ID1280087 | 9,375 | 360 | 0 | 0 | 0 ppbbelow the action level |
| Ross Point Water Dist ID1280163 | 8,965 | 300 | 0 | 0 | 2 ppbbelow the action level |
| Avondale Irrigation Dist ID1280008 | 8,785 | 240 | 0 | 0 | 0 ppbbelow the action level |
| Dalton Water Assn INC ID1280059 | 2,602 | 0 | 0 | 1 | 6 ppbbelow the action level |
| Kootenai County Water Dist 1 ID1280106 | 843 | 0 | 0 | 2 | 9 ppbbelow the action level |
| Worley City of ID1280206 | 591 | 0 | 0 | 5 | 2 ppbbelow the action level |
| Cave Bay Community System ID1280041 | 458 | 0 | 0 | 1 | 2 ppbbelow the action level |
| Harrison City of ID1280083 | 456 | 0 | 0 | 1 | 6 ppbbelow the action level |
| Conkling Park Water Assn ID1280054 | 309 | 0 | 0 | 2 | 17 ppbat or above the action level |
| Rose Lake Water Assn ID1280161 | 300 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Cougar Bay Water Association ID1280309 | 230 | 120 | 0 | 0 | 4 ppbbelow the action level |
| Upper Twin Lakes Water Company INC ID1280194 | 227 | 0 | 0 | 1 | 10 ppbbelow the action level |
| Woodland Shores Water and Sewer Assn ID1280203 | 210 | 0 | 0 | 2 | 2 ppbbelow the action level |
| Ohio Match Estates ID1280127 | 118 | 0 | 0 | 2 | 0 ppbbelow the action level |
| Highway 54 Water Association, INC ID1280221 | 100 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Lake Forest Homes Assn INC ID1280109 | 98 | 0 | 0 | 1 | 5 ppbbelow the action level |
| Parkview Water Assn ID1280135 | 90 | 0 | 0 | 1 | 9 ppbbelow the action level |
| Ramsey Estates ID1280285 | 88 | 0 | 0 | 9 | 0 ppbbelow the action level |
| Sienna Ridge Estates ID1280246 | 81 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Mountain View at Farragut Park ID1280308 | 62 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Gotham Bay Estates ID1280311 | 61 | 0 | 0 | 1 | 1 ppbbelow the action level |
| Gem State - Happy Valley Water System ID1280220 | 60 | 0 | 0 | 1 | 1 ppbbelow the action level |
| Rolling Meadows Ranch ID1280314 | 46 | 0 | 0 | 4 | 0 ppbbelow the action level |
| Fernan Estates Corporation ID1280322 | 37 | 0 | 0 | 17 | 0 ppbbelow the action level |
| Hillside Service Area ID1280095 | 4,140 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Rimrock Service Area ID1280009 | 3,493 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Spirit Lake City of ID1280177 | 2,825 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Twin Lakes Service Area ID1280099 | 2,023 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Hauser Lake Water Assn INC ID1280084 | 1,575 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Bayview Water and Sewer Dist ID1280014 | 1,320 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Hayden Pines Grouse Meadows ID1280257 | 1,188 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Remington Rec Water Dist ID1280270 | 1,104 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Black Rock Utilities INC ID1280290 | 1,014 | 0 | 0 | 0 | 4 ppbbelow the action level |
| Athol City of ID1280006 | 990 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Greenferry Water & Sewer District ID1280077 | 978 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Gem State - Spirit Lake East ID1280176 | 843 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Gem State - Bar Circle S Ranch ID1280010 | 633 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Chilco Service Area ID1280048 | 563 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Pine Villa Park and Water Assn ID1280142 | 500 | 0 | 0 | 0 | 5 ppbbelow the action level |
| Emerald Estates Water Assn INC ID1280066 | 495 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Holiday Acres Water Assn ID1280097 | 480 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Leisure Park ID1280117 | 480 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Pineview Estates Water Dist ID1280141 | 450 | 0 | 0 | 0 | 15 ppbat or above the action level |
| Lone Mountain Estates ID1280346 | 448 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Mountain View Terrace ID1280123 | 445 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Gem State - Bitterroot Water Company ID1280260 | 428 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Garwood Water Coop ID1280225 | 398 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Troy Hoffman Water Corp ID1280096 | 367 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Harbor View Estates Water & Sewer Dist ID1280222 | 355 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Elkhorn Ranch ID1280293 | 278 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Lost Creek Estates Water ID1280331 | 277 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Arrow Point Park ID1280252 | 275 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Chateaux Water Assn INC ID1280046 | 275 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Royal Highland Water System ID1280164 | 275 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Alpine Meadows Water and Sewer Dist ID1280002 | 265 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Hauser Lake Heights ID1280289 | 257 | 0 | 0 | 0 | 5 ppbbelow the action level |
| Southview Terrace Park ID1280236 | 250 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Ohio Match Road Water Dist ID1280128 | 245 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Hayden Haven / Gem Shores ID1280085 | 236 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Saint Dominic School ID1280247 | 228 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Carlin Bay Property Owners Association ID1280039 | 220 | 0 | 0 | 0 | 4 ppbbelow the action level |
| Syringa Water and Sewer ID1280271 | 203 | 0 | 0 | 0 | 5 ppbbelow the action level |
| Panhandle Mobile Estates ID1280130 | 168 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Atlas Acres ID1280005 | 160 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Mcguire Estates Water Users ID1280118 | 158 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Kidd Island Bay Water Users ID1280104 | 153 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Hoyt Bluff Water Association ID1280288 | 151 | 0 | 0 | 0 | 1 ppbbelow the action level |
| South River Water Assn ID1280155 | 150 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Spirit Bend Water Assn ID1280175 | 145 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Gem State - Diamond Bar Estates ID1280268 | 143 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Valley Green ID1280195 | 135 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Farragut Village Property Assn INC ID1280070 | 130 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Hidden Valley Water Assn ID1280093 | 125 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Hayden Orchards Water System ID1280088 | 122 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Prairie Schooner Estates ID1280057 | 115 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Rocky Beach Water Dist ID1280157 | 115 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Hackney Water and Sewer Dist ID1280080 | 108 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Waterford Estates ID1280292 | 108 | 0 | 0 | 0 | 6 ppbbelow the action level |
| Panhandle Village Water System ID1280132 | 105 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Savory Community LLC ID1280166 | 100 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Sun Aire Estates ID1280184 | 98 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Mountain View Park ID1280124 | 97 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Third Addition Water Assn ID1280165 | 97 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Walking Horse Ranch Estates ID1280350 | 95 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Stepping Stones Estates ID1280243 | 88 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Scenic Mobile Estates ID1280023 | 85 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Morrison Estates Homeowner Water Assn ID1280122 | 80 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Dry Acres Water and Sewer Dist ID1280062 | 75 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Huetter City of ID1280100 | 70 | 0 | 0 | 0 | 9 ppbbelow the action level |
| Eight Mile Prairie ID1280254 | 68 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Pine Haven Park ID1280139 | 66 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Harding Acres Tracts Water Assn INC ID1280081 | 64 | 0 | 0 | 0 | 6 ppbbelow the action level |
| East Seasons Acres ID1280278 | 63 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Meadowland Acres ID1280277 | 63 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Gem State - Lynnwood Estates ID1280259 | 60 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Malabar Mobile Home Park ID1280224 | 60 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Sm Utilities ID1280294 | 58 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Silver Leaf Ranch ID1280318 | 57 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Ridge at Sun Up Bay Water System ID1280324 | 55 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Valley Co Op Water Assn ID1280196 | 52 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Panhandle Mobile Home Park ID1280131 | 50 | 0 | 0 | 0 | 6 ppbbelow the action level |
| Pine Hayden Subd ID1280140 | 50 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Seasons Road Water Assn ID1280171 | 50 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Trails End Estates ID1280310 | 49 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Flying W Ranch ID1280287 | 46 | 0 | 0 | 0 | 6 ppbbelow the action level |
| Ranch Valley Water Assn ID1280151 | 45 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Singer Ranch Water System ID1280174 | 44 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Hidden Hill Mobile Home Park ID1280092 | 40 | 0 | 0 | 0 | 5 ppbbelow the action level |
| Ashley Estates Water Assn ID1280273 | 38 | 0 | 0 | 0 | 1 ppbbelow the action level |
| West Seasons Acres HOA ID1280286 | 31 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Prairie Water Assn ID1280149 | 30 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Lakeland Meadows ID1280343 | 25 | 0 | 0 | 0 | 0 ppbbelow the action level |
Shaded rows report lead at or above the 15 ppb action level in their latest monitoring period. EPA sets that level for the value 9 in 10 sampled homes fall at or below; reaching it requires the utility to act, and it is not a measurement of any single tap. 2 systems in this table are at or above it. What an action level means
USGS · Monitoring stations
The water, more recently.
Available station readings in Kootenai County, Idaho. Each measurement keeps its time, unit and original source.
These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.
Recent observations load when this section comes into view.
How these readings update
We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.
Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.
Your next step
Water testing, reports & local help.
Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.
Official national directories
Water testing
Find your state’s private-well program
EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.
Water testing
Find a certified drinking-water laboratory
Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.
Public records
Find your utility’s Consumer Confidence Report
EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.
Public records
Explore USGS water observations
Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.
A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.
Understand water testing and laboratory reportsResource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction
Explore your area
Local coverage in Kootenai County
11ZIP areas in this overview
Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.
Towns and communities
- Athol
- Coeur d'Alene
- Conkling Park
- Harrison
- Hayden
- Post Falls
- Rathdrum
- Spirit Lake
View ZIP areas and understand coverage
- 83801Athol
- 83810
- 83814Coeur d'Alene
- 83815Coeur d'Alene
- 83833Harrison
- 83835Hayden
- 83842
- 83854Post Falls
- 83858Rathdrum
- 83869Spirit Lake
- 83876Conkling Park
These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.
Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.
Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.