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Tap water quality report

Iona Water Dept

EPA monitoring tested this supplier for 71 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
10
detected
2,717
people served
15
health-based violations
Idaho rankingsLead in IdahoPFAS in Idaho
Water source
Ground water
Ownership
Local government
Counties served
Bonneville

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.

15
health-based violations
31
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2015-10-01 → 2015-10-31
MCL Health-based Archived 2015-10-01 → 2015-10-31
MCL Health-based Archived 2015-02-01 → 2015-02-28
MCL Health-based Archived 2015-02-01 → 2015-02-28
MCL Health-based Archived 2015-02-01 → 2015-02-28
MCL Health-based Archived 2015-02-01 → 2015-02-28
MCL Health-based Archived 2014-10-01 → 2014-10-31
MCL Health-based Archived 2014-10-01 → 2014-10-31
MCL Health-based Archived 2011-10-01 → 2011-10-31
MCL Health-based Archived 2011-10-01 → 2011-10-31

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
2580 µg/L 26%
of the EPA limit 10000 µg/L
worst single sample: 2880 µg/L
58/62 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2023
Fluoride
400 µg/L 10%
of the EPA limit 4000 µg/L
 5/5 SYR4 2013–2019
Nitrate-Nitrite
2799 µg/L 28%
of the EPA limit 10000 µg/L
worst single sample: 2880 µg/L
4/4 SYR4 2019
Barium
119 µg/L 5.9%
of the EPA limit 2000 µg/L
worst single sample: 121 µg/L
3/3 SYR4 2013–2019
Combined Uranium
1.69 µg/L 5.6%
of the EPA limit 30 µg/L
worst single sample: 1.7 µg/L
3/3 SYR4 2013–2019
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 2/3 SYR4 2013–2019
Chromium
1 µg/L 1%
of the EPA limit 100 µg/L
 2/3 SYR4 2013–2019
Combined Radium (-226 And -228)
1.169 pCi/L 23%
of the EPA limit 5 pCi/L
worst single sample: 1.2 pCi/L
2/2 SYR4 2016
Dichloromethane
0.5700 µg/L 11%
of the EPA limit 5 µg/L
 1/7 SYR4 2013–2019
61 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PROUSE, ZECH
Phone
208-523-5600
Email
[email protected]

Frequently asked questions about Iona Water Dept

Is Iona Water Dept tap water safe to drink?

EPA monitoring detected 10 contaminants in Iona Water Dept'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 Iona Water Dept's water?

EPA monitoring detected Nitrate, Lead, Fluoride, Nitrate-Nitrite, Barium, and others. The full list with the level and data source for each is above.

How many people does Iona Water Dept serve?

Iona Water Dept reports serving 2,717 people in Idaho, per its EPA record.

Has Iona Water Dept had any water quality violations?

The EPA has 31 violations on file for Iona Water Dept, of which 15 are health-based (a contaminant limit or required treatment was breached) and 0 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.