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Tap water quality report

Hillsboro City

EPA monitoring tested this supplier for 83 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

83
contaminants tested
18
detected
6,650
people served
26
health-based violations
Ohio rankingsLead in OhioPFAS in Ohio
Water source
Surface water
Ownership
Local government
Counties served
Highland

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.

26
health-based violations
66
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2007-10-01 → 2007-10-31
TT Health-based Resolved 2007-10-01 → 2007-10-31
TT Health-based Resolved 2007-10-01 → 2007-10-31
TT Health-based Resolved 2007-10-01 → 2007-10-31
TT Health-based Resolved 1994-02-01 → 1994-02-28
TT Health-based Resolved 1994-02-01 → 1994-02-28
TT Health-based Resolved 1994-02-01 → 1994-02-28
TT Health-based Resolved 1994-02-01 → 1994-02-28
TT Health-based Resolved 1993-10-01 → 1993-10-31
TT Health-based Resolved 1993-10-01 → 1993-10-31

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 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
Nitrate
1840 µg/L 18%
of the EPA limit 10000 µg/L
 120/192 SYR4 2012–2019
Bromodichloromethane
17.1 µg/L
No EPA limit set
 67/68 SYR4 2012–2019
Chloroform
84.1 µg/L
No EPA limit set
 67/68 SYR4 2012–2019
Dibromochloromethane
3 µg/L
No EPA limit set
 67/68 SYR4 2012–2019
Copper
647 µg/L 50%
of the EPA limit 1300 µg/L
 62/66 SYR4 2013–2019
TTHM
104 µg/L 130%
of the EPA limit, in the worst sample — 80 µg/L
 61/61 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
74.39 µg/L 124%
of the EPA limit, in the worst sample — 60 µg/L
 58/58 SYR4 2012–2019
Trichloroacetic Acid
34.06 µg/L
No EPA limit set
 58/58 SYR4 2012–2019
Dichloroacetic Acid
41.48 µg/L
No EPA limit set
 57/58 SYR4 2012–2019
Lead
4.41 µg/L 29%
of the EPA limit 15 µg/L
 21/62 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Monochloroacetic Acid
15.2 µg/L
No EPA limit set
 11/58 SYR4 2012–2019
Barium
38 µg/L 1.9%
of the EPA limit 2000 µg/L
 8/8 SYR4 2012–2019
Fluoride
1010 µg/L 25%
of the EPA limit 4000 µg/L
 8/8 SYR4 2012–2019
Nitrate-Nitrite
1840 µg/L 18%
of the EPA limit 10000 µg/L
 8/12 SYR4 2012
Atrazine
0.1600 µg/L 5.3%
of the EPA limit 3 µg/L
 2/12 SYR4 2012–2019
Dibromoacetic Acid
3.498 µg/L
No EPA limit set
 2/58 SYR4 2012–2019
Nitrite
100 µg/L 10%
of the EPA limit 1000 µg/L
 1/5 SYR4 2012
65 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicBenzeneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneEthylbenzeneHfpo-DaLassoMercuryMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ADKINS, SHAWN
Phone
937-393-5219
Email
sadkins@hillsboroohio.net

Frequently asked questions about Hillsboro City

Is Hillsboro City tap water safe to drink?

EPA monitoring detected 18 contaminants in Hillsboro City'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 Hillsboro City's water?

EPA monitoring detected Nitrate, Bromodichloromethane, Chloroform, Dibromochloromethane, Copper, and others. The full list with the level and data source for each is above.

How many people does Hillsboro City serve?

Hillsboro City reports serving 6,650 people in Ohio, per its EPA record.

Has Hillsboro City had any water quality violations?

The EPA has 66 violations on file for Hillsboro City, of which 26 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.