Water Hardness in 57720
Buffalo, South Dakota · Harding County
Based on EPA and USGS water quality monitoring data from environmental sources (wells, streams, aquifers) near your water system. Actual tap water may differ after treatment — for precise results, test your water at home.
Our Estimate
Weighted average from 1 water system.
What This Means For You
Hard Water - Treatment Recommended
Your water is hard. Scale buildup is likely affecting your plumbing and appliances, reducing their lifespan and efficiency. A water softener is recommended to protect your home.
Recommended Products
Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | How to Test Your Water
Know your water hardness?
If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Buffalo, SD (57720).
Water Systems Serving 57720
Nearby Zip Codes
Frequently Asked Questions
Is the water hard in Buffalo, SD (57720)?
The average water hardness in 57720 is 218 PPM (12.7 GPG), which is classified as hard.
Do I need a water softener in 57720?
With hardness of 218 PPM, a water softener is recommended for homes in 57720.
How many water systems serve 57720?
Zip code 57720 in Buffalo, South Dakota is served by 1 water system.
Learn More About Your Water
Best Water Softeners 2026: Top Picks for Every Budget
We compared salt-based, salt-free, and portable water softeners. Here are our top picks based on water hardness level, home size, and budget.
12 min readWater Softener Size Calculator: What Grain Capacity Do You Need?
Calculate the right water softener size for your home. Enter your household size and water hardness to get a grain capacity recommendation.
7 min readHard Water and Hair: Effects, Damage Signs & What Actually Helps
How mineral buildup affects your hair - and what to do about it based on your actual water hardness level.
10 min read