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WaterSafeCheck

Saint John, ND Tap Water Quality

Water safety reports for all 1 ZIP code in Saint John, North Dakota

Average Score

53/100

Health Violations

0

ZIP Codes

1

High Lead Risk

0

of 1 ZIP codes

D

About Tap Water in Saint John, ND

Tap water quality in Saint John, ND is a significant concern, currently receiving a below-average safety score of 53/100 across 1 ZIP code. With 0 health-based violations recorded in the past 5 years, systems like ROLLA CITY OF have struggled to maintain compliance with EPA regulations enforced by North Dakota Department of Environmental Quality. Residents are strongly encouraged to utilize certified water filtration systems.

A major factor in Saint John'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 Saint John'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 — Saint John, ND

Click any ZIP code for the full water quality report

D
58369

Saint John, ND

Score: 53/100✓ No violations

Frequently Asked Questions — Saint John Water Quality

Is tap water safe to drink in Saint John, ND?+
Tap water in Saint John has a grade of D, 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 Saint John?+
The average water quality score across 1 ZIP code in Saint John, ND is 53/100. 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 Saint John have lead in its tap water?+
Lead risk ratings in Saint John 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 Saint John?+
Each ZIP code in Saint John 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 Saint John's tap water come from?+
Tap water in Saint John, ND 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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