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Tap water quality report

Hamilton Public Water

EPA monitoring tested this supplier for 83 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

83
contaminants tested
15
detected
62,447
people served
39
health-based violations
Ohio rankingsLead in OhioPFAS in Ohio
Water source
Ground water
Ownership
Local government
Counties served
Butler

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.

39
health-based violations
59
violations on file
2
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Resolved 1997-03-01 → 1997-03-31
MCL Health-based Resolved 1997-03-01 → 1997-03-31
MCL Health-based Resolved 1997-03-01 → 1997-03-31
MCL Health-based Resolved 1997-03-01 → 1997-03-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0036 µg/L 2/4 2024
PFHXS 0.0041 µg/L 1/4 2024
PFOA 0.0053 µg/L 1/4 2024

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
157 µg/L 12%
of the EPA limit 1300 µg/L
 74/107 SYR4 2012–2019
Lead
30.8 µg/L 205%
of the EPA limit, in the worst sample — 15 µg/L
 43/107 SYR4 2012–2019
Dibromoacetic Acid
3.804 µg/L
No EPA limit set
 25/58 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
3.804 µg/L 6.3%
of the EPA limit 60 µg/L
 22/58 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 18/18 LCR 2024
Nitrate
1500 µg/L 15%
of the EPA limit 10000 µg/L
 18/30 SYR4 2012–2019
TTHM
2.73 µg/L 3.4%
of the EPA limit 80 µg/L
 8/58 SYR4 2012–2019
Bromoform
1.1 µg/L
No EPA limit set
 5/60 SYR4 2012–2019
Chloroform
1.63 µg/L
No EPA limit set
 4/60 SYR4 2012–2019
Fluoride
1800 µg/L 45%
of the EPA limit 4000 µg/L
 4/4 SYR4 2014–2018
Barium
57.2 µg/L 2.9%
of the EPA limit 2000 µg/L
 2/4 SYR4 2014–2018
Nitrate-Nitrite
1240 µg/L 12%
of the EPA limit 10000 µg/L
 2/4 SYR4 2012–2014
68 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosAtrazineBenzeneBeryllium, TotalBromodichloromethaneChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDibromochloromethaneDichloroacetic AcidEthylbenzeneHfpo-DaLassoMercuryMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOSPfpeaPfpesPftaPftrdaPfunaSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MOSLEY, JAY
Email
jay.mosley@hamilton-oh.gov

Frequently asked questions about Hamilton Public Water

Is Hamilton Public Water tap water safe to drink?

EPA monitoring detected 15 contaminants in Hamilton Public Water'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 Hamilton Public Water's water?

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

How many people does Hamilton Public Water serve?

Hamilton Public Water reports serving 62,447 people in Ohio, per its EPA record.

Has Hamilton Public Water had any water quality violations?

The EPA has 59 violations on file for Hamilton Public Water, of which 39 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.