Water Hardness in 57785
Hereford, South Dakota · Meade County
Dataset updated March 9, 2026Matched to 12 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 12 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.
Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.
Water Systems Serving 57785
These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
Sturgis SD4600321 | groundwater | 597 PPM Very Hard | |
Fort Meade Va Center SD4680002 | surface water | 638 PPM Very Hard | |
Bear Butte Valley Water SD4602334 | groundwater | 597 PPM Very Hard | |
Valley Heights Estates Inc SD4602361 | groundwater | 597 PPM Very Hard | |
Blucksberg Mountain #1 SD4600324 | groundwater | 597 PPM Very Hard |
Nearby Zip Codes
What This Means For You
Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.
Very Hard Water - Treatment Strongly Recommended
Your water is very hard. Without treatment, you can expect significant scale buildup in pipes and appliances, higher energy bills from reduced water heater efficiency, and persistent issues with skin and hair dryness.
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 Hereford, SD (57785).
Frequently Asked Questions
Is the water hard in Hereford, SD (57785)?
The average water hardness in 57785 is 597 PPM (34.9 GPG), which is classified as very hard.
Do I need a water softener in 57785?
With hardness of 597 PPM, a water softener is recommended for homes in 57785.
Is hard water in 57785 safe to drink?
Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.
How many water systems serve 57785?
Zip code 57785 in Hereford, South Dakota is served by 12 water systems.
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