Bismarck
Is Bismarck tap water safe to drink?
Mostly yes — Bismarck scores 100/100. This report aggregates EPA drinking water data across 4 local systems in Bismarck. We found 0 total violations (0 unresolved).
Real-Time Environment
Live: 11:45 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Bismarck.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Bismarck?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Filtration technologies matched to Bismarck contaminant records.
Baby Formula Safety
Guidance on preparing infant formula using municipal tap water in Bismarck.
Homebuyer's Perspective
Municipal water quality in Bismarck directly influences pipe corrosion rates and home filtration needs. The high safety score (100/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Lead (90th percentile) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Bismarck
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Bismarck.
Frequently Asked Questions
Is Bismarck tap water safe to drink?
Mostly yes — Bismarck scores 100/100.
How many water systems serve Bismarck?
Bismarck is served by 4 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Bismarck?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Bismarck.
What is the water quality score for Bismarck?
The water quality score for Bismarck is 100 out of 100, based on EPA contaminant data, violation history, and testing results across the 4 systems serving the city.
What are the top contaminants in Bismarck?
The top contaminants detected in Bismarck include Lead (90th percentile). View detailed information on our contaminants page.
Bismarck Water Quality Summary
Bismarck, ND receives a water quality score of 100/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 4 public water systems serving the area.
Bismarck's water quality is above the national average, with strong compliance records and low contaminant levels. Residents generally receive clean, safe tap water that meets EPA standards.
Bismarck's score of 100 is 8 points above the North Dakota state average of 92, and above the nationwide average of roughly 78/100 across all U.S. states.
Residents of this mid-size city in North Dakota can rely on tap water that achieves the highest possible marks for quality and compliance across all four of its local water systems. Despite being located in a Great Plains region characterized by agricultural production and Bakken oil and gas growth, Bismarck successfully maintains a perfect standard of water safety. For prospective homebuyers, this flawless performance provides consistent water quality regarding the reliability and cleanliness of their household water supply.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our North Dakota water quality rankings report →
Key Contaminants
Join the Bismarck updates waitlist
We are developing email updates. This form records your interest; automated violation and boil-water advisory emails are not active.
We will use your address to contact you if updates become available. See our Privacy Policy.
Water Systems Serving Bismarck (4)
Check Your Specific Address
Water quality can vary by neighborhood in Bismarck.
Related
Quick compare in North Dakota
Compare Bismarck water quality: View all states · Contaminant library · How we score water quality