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Tap water quality report

Ammon City of

EPA monitoring tested this supplier for 102 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

102
contaminants tested
14
detected
17,338
people served
11
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.

11
health-based violations
418
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2009-10-01 → 2009-10-31
MCL Health-based Archived 2008-10-01 → 2008-10-31
MCL Health-based Archived 2006-09-01 → 2006-09-30
MCL Health-based Archived 1997-10-01 → 1997-10-31
MCL Health-based Archived 1996-11-01 → 1996-11-30
MCL Health-based Archived 1996-09-01 → 1996-09-30
MCL Health-based Archived 1995-11-01 → 1995-11-30
MCL Health-based Archived 1995-10-01 → 1995-10-31
MCL Health-based Archived 1995-09-01 → 1995-09-30
MCL Health-based Archived 1994-10-01 → 1994-10-31

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
3004 µg/L 30%
of the EPA limit 10000 µg/L
worst single sample: 3080 µg/L
114/116 SYR4 2012–2019
Fluoride
325 µg/L 8.1%
of the EPA limit 4000 µg/L
worst single sample: 400 µg/L
16/17 SYR4 2013–2019
Combined Uranium
3.25 µg/L 11%
of the EPA limit 30 µg/L
worst single sample: 3.6 µg/L
15/15 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2023
Gross Alpha, Excl. Radon And U
4.87 pCi/L 32%
of the EPA limit 15 pCi/L
worst single sample: 5.5 pCi/L
13/14 SYR4 2012–2019
Combined Radium (-226 And -228)
3.955 pCi/L 79%
of the EPA limit 5 pCi/L
worst single sample: 4.9 pCi/L
11/11 SYR4 2012–2019
Barium
146.35 µg/L 7.3%
of the EPA limit 2000 µg/L
worst single sample: 154 µg/L
10/10 SYR4 2013–2019
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 7/10 SYR4 2013–2019
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
 7/10 SYR4 2013–2019
Nitrate-Nitrite
2972.5 µg/L 30%
of the EPA limit 10000 µg/L
worst single sample: 3050 µg/L
6/6 SYR4 2019
Lithium
47.1 µg/L
No EPA limit set
 6/6 UCMR-5 2024
Di(2-ethylhexyl) Phthalate
2.166 µg/L 36%
of the EPA limit 6 µg/L
worst single sample: 2.19 µg/L
5/15 SYR4 2013–2019
Dichloromethane
1.06 µg/L 21%
of the EPA limit 5 µg/L
 1/14 SYR4 2012–2019
Selenium
2 µg/L 4%
of the EPA limit 50 µg/L
 1/10 SYR4 2013–2019
88 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDalaponDi(2-ethylhexyl) AdipateDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
RIBLETT, NATHAN
Phone
208-612-4038
Email
[email protected]

Frequently asked questions about Ammon City of

Is Ammon City of tap water safe to drink?

EPA monitoring detected 14 contaminants in Ammon 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 Ammon City of's water?

EPA monitoring detected Nitrate, Fluoride, Combined Uranium, Lead, 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 Ammon City of serve?

Ammon City of reports serving 17,338 people in Idaho, per its EPA record.

Has Ammon City of had any water quality violations?

The EPA has 418 violations on file for Ammon City of, of which 11 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.