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WaterSafeCheck

Marietta, OK Tap Water Quality

Water safety reports for all 1 ZIP code in Marietta, Oklahoma

Average Score

95/100

Health Violations

0

ZIP Codes

1

High Lead Risk

0

of 1 ZIP codes

A

About Tap Water in Marietta, OK

Tap water in Marietta, OK ranks among the best in the state, maintaining a remarkable average water quality score of 95/100 across its 1 ZIP code. Based on recent EPA Safe Drinking Water Act compliance records, water provided by Marietta Pwa and other municipal suppliers has consistently met or exceeded federal safety standards. This top-tier "A" grade reflects strong infrastructure, diligent monitoring by Oklahoma Department of Environmental Quality, and low contaminant levels.

A major factor in Marietta's high rating is its flawless health-based violation record. Over the past 5 years of EPA tracking, local water systems have recorded zero health-based violations. This means that regulated contaminants—such as lead, arsenic, and harmful bacteria—have not exceeded the Maximum Contaminant Levels (MCLs) allowed by federal law. Drawing primarily from ground water, the city utilizes advanced filtration to maintain this standard.

Fortunately, the modeled risk for widespread lead exposure in Marietta's municipal water is relatively low compared to national averages. However, because lead typically enters drinking water through the corrosion of older, individual home plumbing rather than the main supply lines, residents in homes built before 1986 should still exercise caution by running the tap before use.

Water Quality by ZIP Code — Marietta, OK

Click any ZIP code for the full water quality report

A
73448

Marietta, OK

Score: 95/100✓ No violations

Frequently Asked Questions — Marietta Water Quality

Is tap water safe to drink in Marietta, OK?+
Yes — tap water in Marietta meets all federal EPA standards and earns a A grade. It is generally safe for healthy adults. As always, running your tap for 30 seconds before use and using a filter adds extra protection for vulnerable populations.
What is the water quality score for Marietta?+
The average water quality score across 1 ZIP code in Marietta, OK is 95/100. Scores are derived from EPA violation history, lead levels, enforcement actions, and infrastructure risk indicators. Individual ZIP codes may vary — search your specific ZIP above for a personalized report.
Does Marietta have lead in its tap water?+
Lead risk ratings in Marietta are relatively low based on EPA monitoring data. However, lead in home plumbing is a separate concern — if your home was built before 1986, individual tap testing is recommended.
How do I get the water quality report for Marietta?+
Each ZIP code in Marietta has a full water quality report on this site — click any ZIP code below. You can also get the annual Consumer Confidence Report (CCR) from your local water utility. The CCR is required to be published every year by July 1 and contains actual contaminant measurements and violation history.
Where does Marietta's tap water come from?+
Tap water in Marietta, OK primarily comes from ground water. Groundwater systems pump water from underground aquifers, which is naturally filtered through soil and rock but can still contain naturally occurring contaminants.

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