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Tap water quality report

Zanesville

EPA monitoring tested this supplier for 83 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

83
contaminants tested
20
detected
29,381
people served
12
health-based violations
Ohio rankingsLead in OhioPFAS in Ohio
Water source
Ground water
Ownership
Private
Counties served
Muskingum

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.

12
health-based violations
29
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2007-12-01 → 2007-12-31
MCL Health-based Resolved 2007-12-01 → 2007-12-31
MCL Health-based Resolved 2007-12-01 → 2007-12-31
MCL Health-based Resolved 2007-12-01 → 2007-12-31
MCL Health-based Resolved 1994-08-01 → 1994-08-31
MCL Health-based Resolved 1994-08-01 → 1994-08-31
MCL Health-based Resolved 1994-08-01 → 1994-08-31
MCL Health-based Resolved 1994-08-01 → 1994-08-31
MCL Health-based Resolved 1992-08-01 → 1992-08-31
MCL Health-based Resolved 1992-08-01 → 1992-08-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
6:2 Fts 0.0201 µg/L 1/2 2023
PFBS 0.0031 µg/L 1/2 2023

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
Bromodichloromethane
21.43 µg/L
No EPA limit set
worst single sample: 25.8 µg/L
95/95 SYR4 2012–2019
Chloroform
23.83 µg/L
No EPA limit set
worst single sample: 28.7 µg/L
95/95 SYR4 2012–2019
Dibromochloromethane
14.04 µg/L
No EPA limit set
worst single sample: 24.8 µg/L
95/95 SYR4 2012–2019
TTHM
61.41 µg/L 77%
of the EPA limit 80 µg/L
worst single sample: 73.6 µg/L
95/95 SYR4 2012–2019
Dichloroacetic Acid
9.86 µg/L
No EPA limit set
worst single sample: 16.5 µg/L
93/93 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
19.4 µg/L 32%
of the EPA limit 60 µg/L
worst single sample: 30.9 µg/L
92/93 SYR4 2012–2019
Trichloroacetic Acid
6.745 µg/L
No EPA limit set
worst single sample: 13.2 µg/L
92/93 SYR4 2012–2019
Bromoform
2.51 µg/L
No EPA limit set
worst single sample: 5.3 µg/L
91/95 SYR4 2012–2019
Dibromoacetic Acid
3.93 µg/L
No EPA limit set
worst single sample: 6.9 µg/L
78/93 SYR4 2012–2019
Copper
570.5 µg/L 44%
of the EPA limit 1300 µg/L
worst single sample: 744 µg/L
76/120 SYR4 2014–2019
Lead
0.00090 mg/L 6%
of the EPA limit 0.0150 mg/L
 18/18 LCR 2025
Nitrate
900 µg/L 9%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
Nitrate-Nitrite
840 µg/L 8.4%
of the EPA limit 10000 µg/L
worst single sample: 900 µg/L
7/8 SYR4 2012–2019
Barium
53.77 µg/L 2.7%
of the EPA limit 2000 µg/L
worst single sample: 53.9 µg/L
3/3 SYR4 2012–2018
Fluoride
1000 µg/L 25%
of the EPA limit 4000 µg/L
 3/3 SYR4 2012–2018
Lead
42.22 µg/L 281%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 42.3 µg/L
3/120 SYR4 2014–2019
Monobromoacetic Acid
1.27 µg/L
No EPA limit set
worst single sample: 1.3 µg/L
3/93 SYR4 2012–2019
Monochloroacetic Acid
2 µg/L
No EPA limit set
 1/93 SYR4 2012–2019
63 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosAtrazineBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneEthylbenzeneHfpo-DaLassoMercuryNetfosaaNfdhaNmefosaaNitritePfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MASON, DONALD L.
Phone
740-617-4908
Email
[email protected]

Frequently asked questions about Zanesville

Is Zanesville tap water safe to drink?

EPA monitoring detected 20 contaminants in Zanesville'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 Zanesville's water?

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

How many people does Zanesville serve?

Zanesville reports serving 29,381 people in Ohio, per its EPA record.

Has Zanesville had any water quality violations?

The EPA has 29 violations on file for Zanesville, of which 12 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.