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Tap water quality report

Jerome City of

EPA monitoring tested this supplier for 98 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

98
contaminants tested
10
detected
13,135
people served
5
health-based violations
Idaho rankingsLead in IdahoPFAS in Idaho
Water source
Ground water
Ownership
Local government
Counties served
Jerome

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.

5
health-based violations
30
violations on file
2
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2011-07-01 → 2011-07-31
MCL Health-based Archived 2011-07-01 → 2011-07-31
MCL Health-based Archived 2008-11-01 → 2008-11-30
MCL Health-based Archived 2002-07-01 → 2002-07-31
MCL Health-based Archived 1994-08-01 → 1994-08-31
RPT Monitoring Unaddressed 2025-07-02
RPT Monitoring Unaddressed 2025-07-02
MR Monitoring Archived 2020-10-01 → 2020-12-31
MR Monitoring Archived 2020-10-01 → 2020-12-31
MR Monitoring Resolved 2017-01-01 → 2022-12-31

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
2570 µg/L 26%
of the EPA limit 10000 µg/L
worst single sample: 2760 µg/L
64/64 SYR4 2012–2019
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 18/18 LCR 2025
TTHM
17.075 µg/L 21%
of the EPA limit 80 µg/L
worst single sample: 19.2 µg/L
18/18 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
2.725 µg/L 4.5%
of the EPA limit 60 µg/L
worst single sample: 3 µg/L
12/18 SYR4 2012–2019
Barium
61.77 µg/L 3.1%
of the EPA limit 2000 µg/L
worst single sample: 65.1 µg/L
4/4 SYR4 2012
Combined Radium (-226 And -228)
1.285 pCi/L 26%
of the EPA limit 5 pCi/L
worst single sample: 1.3 pCi/L
4/4 SYR4 2012
Combined Uranium
2.795 µg/L 9.3%
of the EPA limit 30 µg/L
worst single sample: 2.9 µg/L
4/4 SYR4 2012
Fluoride
660 µg/L 17%
of the EPA limit 4000 µg/L
 4/4 SYR4 2012
Lithium
60 µg/L
No EPA limit set
 4/4 UCMR-5 2024
Chromium
1.495 µg/L 1.5%
of the EPA limit 100 µg/L
worst single sample: 1.5 µg/L
2/4 SYR4 2012
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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CITY OF JEROME
Phone
208-324-8189
Email
[email protected]

Frequently asked questions about Jerome City of

Is Jerome City of tap water safe to drink?

EPA monitoring detected 10 contaminants in Jerome 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 Jerome City of's water?

EPA monitoring detected Nitrate, Lead, 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 Jerome City of serve?

Jerome City of reports serving 13,135 people in Idaho, per its EPA record.

Has Jerome City of had any water quality violations?

The EPA has 30 violations on file for Jerome City of, of which 5 are health-based (a contaminant limit or required treatment was breached) and 2 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.