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Tap water quality report

Marietta City

EPA monitoring tested this supplier for 83 contaminants and detected 21. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

83
contaminants tested
21
detected
18,707
people served
8
health-based violations
Ohio rankingsLead in OhioPFAS in Ohio
Water source
Ground water
Ownership
Local government
Counties served
Washington

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.

8
health-based violations
120
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1992-07-01 → 1992-07-31
MCL Health-based Resolved 1992-07-01 → 1992-07-31
MCL Health-based Resolved 1992-07-01 → 1992-07-31
MCL Health-based Resolved 1992-07-01 → 1992-07-31
MCL Health-based Resolved 1992-04-01 → 1992-04-30
MCL Health-based Resolved 1992-04-01 → 1992-04-30
MCL Health-based Resolved 1992-04-01 → 1992-04-30
MCL Health-based Resolved 1992-04-01 → 1992-04-30
RPT Monitoring Resolved 2025-07-02
RPT Monitoring Resolved 2025-07-02

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0047 µg/L 2/2 2025
PFOA 0.0052 µg/L 2/2 2025
PFOS 0.0056 µg/L 2/2 2025

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
16.335 µg/L
No EPA limit set
worst single sample: 21.9 µg/L
114/114 SYR4 2012–2019
Bromoform
10.475 µg/L
No EPA limit set
worst single sample: 13.9 µg/L
114/114 SYR4 2012–2019
Chloroform
16.17 µg/L
No EPA limit set
worst single sample: 22.3 µg/L
114/114 SYR4 2012–2019
Dibromochloromethane
18.87 µg/L
No EPA limit set
worst single sample: 21.1 µg/L
114/114 SYR4 2012–2019
Dibromoacetic Acid
6.44 µg/L
No EPA limit set
worst single sample: 10.6 µg/L
113/113 SYR4 2012–2019
TTHM
56.76 µg/L 71%
of the EPA limit 80 µg/L
worst single sample: 68 µg/L
113/113 SYR4 2012–2019
Dichloroacetic Acid
5.355 µg/L
No EPA limit set
worst single sample: 32 µg/L
110/113 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
12.705 µg/L 21%
of the EPA limit 60 µg/L
worst single sample: 15.9 µg/L
100/113 SYR4 2012–2019
Trichloroacetic Acid
2.33 µg/L
No EPA limit set
worst single sample: 3.1 µg/L
38/113 SYR4 2012–2019
Copper
38 µg/L 2.9%
of the EPA limit 1300 µg/L
worst single sample: 47 µg/L
21/90 SYR4 2012–2018
Lead
0.00060 mg/L 4%
of the EPA limit 0.0150 mg/L
 20/20 LCR 2026
Nitrate
1610 µg/L 16%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Nitrate-Nitrite
1571 µg/L 16%
of the EPA limit 10000 µg/L
worst single sample: 1610 µg/L
7/7 SYR4 2013–2019
Monochloroacetic Acid
4.31 µg/L
No EPA limit set
worst single sample: 4.4 µg/L
4/113 SYR4 2012–2019
Fluoride
1036.3 µg/L 26%
of the EPA limit 4000 µg/L
worst single sample: 1050 µg/L
3/3 SYR4 2013–2019
Lead
2.544 µg/L 17%
of the EPA limit 15 µg/L
worst single sample: 2.56 µg/L
3/90 SYR4 2012–2018
Barium
10.95 µg/L 0.5%
of the EPA limit 2000 µg/L
worst single sample: 11 µg/L
2/3 SYR4 2013–2019
Monobromoacetic Acid
4 µg/L
No EPA limit set
 1/113 SYR4 2012–2019
62 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, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneEthylbenzeneHfpo-DaLassoMercuryNetfosaaNfdhaNmefosaaNitritePfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPfpeaPfpesPftaPftrdaPfunaSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SCHLICHER, JOSHUA D.
Phone
740-373-1387
Email
[email protected]

Frequently asked questions about Marietta City

Is Marietta City tap water safe to drink?

EPA monitoring detected 21 contaminants in Marietta 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 Marietta City's water?

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

How many people does Marietta City serve?

Marietta City reports serving 18,707 people in Ohio, per its EPA record.

Has Marietta City had any water quality violations?

The EPA has 120 violations on file for Marietta City, of which 8 are health-based (a contaminant limit or required treatment was breached) and 1 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.