Tap WaterIndex

← Idaho

Tap water quality report

Coeur D Alene, ID

EPA monitoring detected 14 contaminants across the 30 water suppliers serving Coeur D Alene. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

30
water suppliers
61,150
people served
14
contaminants found
Idaho rankings Lead in Idaho PFAS in Idaho

What was found in Coeur D Alene's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
3890 µg/L 39%
of the EPA limit 10000 µg/L
 23/30 SYR4
Nitrate-Nitrite
3020 µg/L 30%
of the EPA limit 10000 µg/L
 20/30 SYR4
Fluoride
320 µg/L 8%
of the EPA limit 4000 µg/L
 3/30 SYR4
Barium
120 µg/L 6%
of the EPA limit 2000 µg/L
 20/30 SYR4
Arsenic
60 µg/L 600%
of the EPA limit, in the worst sample — 10 µg/L
 14/30 SYR4
TTHM
59.9 µg/L 75%
of the EPA limit 80 µg/L
 8/30 SYR4
Total Haloacetic Acids (HAA5)
38.6 µg/L 64%
of the EPA limit 60 µg/L
 5/30 SYR4
Gross Alpha, Excl. Radon And U
8.1 pCi/L 54%
of the EPA limit 15 pCi/L
 15/30 SYR4
Combined Uranium
5.86 µg/L 20%
of the EPA limit 30 µg/L
 14/30 SYR4
Combined Radium (-226 And -228)
4.7 pCi/L 94%
of the EPA limit 5 pCi/L
 17/30 SYR4
Gross Beta Particle Activity
2 pCi/L
No EPA limit set
 1/30 SYR4
Trichloroethylene
1.12 µg/L 22%
of the EPA limit 5 µg/L
 1/30 SYR4
2,4-D
0.2770 µg/L 0.4%
of the EPA limit 70 µg/L
 1/30 SYR4
Lead
0.0090 mg/L 60%
of the EPA limit 0.0150 mg/L
 30/30 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Coeur D Alene

SupplierPopulation served
COEUR D ALENE CITY OF 54,115
KOOTENAI COUNTY WATER DIST 1 843
GEM STATE - SPIRIT LAKE EAST 843
GEM STATE - BAR CIRCLE S RANCH 633
EMERALD ESTATES WATER ASSN INC 495
LEISURE PARK 480
GEM STATE - BITTERROOT WATER COMPANY 428
TROY HOFFMAN WATER CORP 367
HARBOR VIEW ESTATES WATER & SEWER DIST 355
LOST CREEK ESTATES WATER 277
ARROW POINT PARK 275
COUGAR BAY WATER ASSOCIATION 230
CARLIN BAY PROPERTY OWNERS ASSOCIATION 220
WOODLAND SHORES WATER AND SEWER ASSN 210
SYRINGA WATER AND SEWER 203
KIDD ISLAND BAY WATER USERS 153
GEM STATE - DIAMOND BAR ESTATES 143
THIRD ADDITION WATER ASSN 97
MOUNTAIN VIEW PARK 97
WALKING HORSE RANCH ESTATES 95
RAMSEY ESTATES 88
MORRISON ESTATES HOMEOWNER WATER ASSN 80
HUETTER CITY OF 70
PINE HAVEN PARK 66
GEM STATE - LYNNWOOD ESTATES 60
GEM STATE - HAPPY VALLEY WATER SYSTEM 60
RIDGE AT SUN UP BAY WATER SYSTEM 55
PANHANDLE MOBILE HOME PARK 50
FERNAN ESTATES CORPORATION 37
LAKELAND MEADOWS 25

Frequently asked questions about Coeur D Alene tap water

Is Coeur D Alene tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Coeur D Alene. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Coeur D Alene?

30 public water suppliers report drinking-water monitoring for Coeur D Alene, Idaho to the EPA. Each is listed above with its population served.

What contaminants are in Coeur D Alene's water?

The contaminants EPA monitoring detected in Coeur D Alene include Nitrate, Nitrate-Nitrite, Fluoride, Barium, Arsenic. The full list, with the highest level found and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.