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Tap water quality report

Harrison City of

EPA monitoring tested this supplier for 42 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

42
contaminants tested
12
detected
456
people served
6
health-based violations
Idaho rankingsLead in IdahoPFAS in Idaho
Water source
Ground water
Ownership
Local government
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.

6
health-based violations
132
violations on file
5
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2025-12-21
TT Health-based Unaddressed 2025-12-21
TT Health-based Unaddressed 2025-12-21
MCL Health-based Archived 2005-10-01 → 2005-10-31
MCL Health-based Archived 1998-09-01 → 1998-09-30
MCL Health-based Archived 1998-08-01 → 1998-08-31
MR Monitoring Resolved 2021-10-01 → 2021-12-31
MR Monitoring Resolved 2021-10-01 → 2021-12-31
MR Monitoring Resolved 2021-10-01 → 2021-12-31
MON Monitoring Resolved 2021-08-01 → 2021-08-31

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
Nitrate
180 µg/L 1.8%
of the EPA limit 10000 µg/L
 18/48 SYR4 2012–2019
Lead
0.0060 mg/L 40%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
Combined Radium (-226 And -228)
1.99 pCi/L 40%
of the EPA limit 5 pCi/L
worst single sample: 2.1 pCi/L
3/3 SYR4 2016
Fluoride
352.6 µg/L 8.8%
of the EPA limit 4000 µg/L
worst single sample: 357 µg/L
3/3 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
2.35 pCi/L 16%
of the EPA limit 15 pCi/L
worst single sample: 2.5 pCi/L
3/3 SYR4 2016
Gross Beta Particle Activity
5.27 pCi/L
No EPA limit set
worst single sample: 5.4 pCi/L
3/3 SYR4 2016
Barium
75.55 µg/L 3.8%
of the EPA limit 2000 µg/L
worst single sample: 79 µg/L
2/3 SYR4 2013–2019
TTHM
15.75 µg/L 20%
of the EPA limit 80 µg/L
worst single sample: 15.8 µg/L
2/5 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
2.4895 µg/L 4.1%
of the EPA limit 60 µg/L
worst single sample: 2.56 µg/L
2/3 SYR4 2013–2019
Arsenic
3 µg/L 30%
of the EPA limit 10 µg/L
 1/3 SYR4 2013–2019
Combined Uranium
1 µg/L 3.3%
of the EPA limit 30 µg/L
 1/3 SYR4 2016
Nitrate-Nitrite
134 µg/L 1.3%
of the EPA limit 10000 µg/L
 1/2 SYR4 2019
30 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAsbestosBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneEthylbenzeneMercuryNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WERELEY, JASON D
Phone
208-755-7868
Email
[email protected]

Frequently asked questions about Harrison City of

Is Harrison City of tap water safe to drink?

EPA monitoring detected 12 contaminants in Harrison City of'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 Harrison City of's water?

EPA monitoring detected Nitrate, Lead, Combined Radium (-226 And -228), Fluoride, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Harrison City of serve?

Harrison City of reports serving 456 people in Idaho, per its EPA record.

Has Harrison City of had any water quality violations?

The EPA has 132 violations on file for Harrison City of, of which 6 are health-based (a contaminant limit or required treatment was breached) and 5 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.