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Tap water quality report

Kootenai County Water Dist 1

EPA monitoring tested this supplier for 18 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

18
contaminants tested
6
detected
843
people served
42
health-based violations
Idaho rankingsLead in IdahoPFAS in Idaho
Water source
Surface water
Ownership
Mixed public/private
Counties served
Kootenai

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

42
health-based violations
120
violations on file
10
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-10-11
TT Health-based Resolved 2024-10-11
TT Health-based Resolved 2024-10-11
TT Health-based Resolved 2024-10-11
TT Health-based Resolved 2023-07-01 → 2023-07-31
TT Health-based Resolved 2023-07-01 → 2023-07-31
TT Health-based Resolved 2023-07-01 → 2023-07-31
TT Health-based Archived 1996-05-01 → 1996-05-31
TT Health-based Archived 1996-04-01 → 1996-04-30
TT Health-based Archived 1996-03-01 → 1996-03-31

Other contaminants detected

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0090 mg/L 60%
of the EPA limit 0.0150 mg/L
 25/25 LCR 2025
Nitrate
240 µg/L 2.4%
of the EPA limit 10000 µg/L
 12/14 SYR4 2012–2018
TTHM
26.65 µg/L 33%
of the EPA limit 80 µg/L
worst single sample: 28.8 µg/L
6/6 SYR4 2012–2017
Total Haloacetic Acids (HAA5)
16.075 µg/L 27%
of the EPA limit 60 µg/L
worst single sample: 17.4 µg/L
6/6 SYR4 2012–2017
Barium
15 µg/L 0.8%
of the EPA limit 2000 µg/L
 1/1 SYR4 2019
Gross Alpha, Excl. Radon And U
0.2000 pCi/L 1.3%
of the EPA limit 15 pCi/L
 1/1 SYR4 2016
12 contaminants tested, none detected
Antimony, TotalArsenicBeryllium, TotalCadmiumChromiumCombined Radium (-226 And -228)Combined UraniumFluorideMercuryNitriteSeleniumThallium, Total

Utility contact

Contact
GOUGH, CLAUDIA
Phone
650-948-9556
Email
[email protected]

Frequently asked questions about Kootenai County Water Dist 1

Is Kootenai County Water Dist 1 tap water safe to drink?

EPA monitoring detected 6 contaminants in Kootenai County Water Dist 1's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Kootenai County Water Dist 1's water?

EPA monitoring detected Lead, Nitrate, TTHM, Total Haloacetic Acids (HAA5), Barium, and others. The full list with the level and data source for each is above.

How many people does Kootenai County Water Dist 1 serve?

Kootenai County Water Dist 1 reports serving 843 people in Idaho, per its EPA record.

Has Kootenai County Water Dist 1 had any water quality violations?

The EPA has 120 violations on file for Kootenai County Water Dist 1, of which 42 are health-based (a contaminant limit or required treatment was breached) and 10 remain open. The rest are monitoring or reporting failures.

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.