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WaterSafeCheck

Bay Saint Louis, MS Tap Water Quality

Water safety reports for all 2 ZIP codes in Bay Saint Louis, Mississippi

Average Score

62/100

Health Violations

0

ZIP Codes

2

High Lead Risk

0

of 2 ZIP codes

C

About Tap Water in Bay Saint Louis, MS

Water quality in Bay Saint Louis, MS is currently rated with a moderate C grade (average score: 62/100 across 2 ZIP codes). This rating indicates that while the water provided by STENNIS SPACE CENTER is treated and regulated, there have been notable compliance issues or contaminant detections recently. Residents should stay informed about the specific challenges affecting their local supply.

A major factor in Bay Saint Louis'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 Bay Saint Louis'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 — Bay Saint Louis, MS

Click any ZIP code for the full water quality report

B
39521

Bay Saint Louis, MS

Score: 73/100✓ No violations
D
39520

Bay Saint Louis, MS

Score: 50/100✓ No violations

Frequently Asked Questions — Bay Saint Louis Water Quality

Is tap water safe to drink in Bay Saint Louis, MS?+
Tap water in Bay Saint Louis has a grade of C, indicating compliance concerns in recent years. Families with young children or pregnant women should consider using a certified NSF/ANSI 53 water filter for drinking and cooking.
What is the water quality score for Bay Saint Louis?+
The average water quality score across 2 ZIP codes in Bay Saint Louis, MS is 62/100. 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 Bay Saint Louis have lead in its tap water?+
Lead risk ratings in Bay Saint Louis 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 Bay Saint Louis?+
Each ZIP code in Bay Saint Louis 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 Bay Saint Louis's tap water come from?+
Tap water in Bay Saint Louis, MS 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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