Water Hardness in 63020
De Soto, Missouri · Jefferson County
Dataset updated March 9, 2026Matched to 15 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 15 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 63020
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 |
|---|---|---|---|
| Jefferson Co Cons Pwsd C 1 MO6024295 | surface water | 287 PPM Very Hard | |
| Jefferson County Pwsd 1 MO6024292 | surface water | 270 PPM Very Hard | |
| Jefferson County Pwsd 3 MO6024294 | surface water | 270 PPM Very Hard | |
| Jefferson County Pwsd 2 MO6024293 | surface water | 270 PPM Very Hard | |
| Festus Pws MO6010276 | surface water | 287 PPM Very Hard |
Nearby Zip Codes
What This Means For You
Use this ZIP reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing equipment.
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 De Soto, MO (63020).
Frequently Asked Questions
Is the water hard in De Soto, MO (63020)?
The average water hardness in 63020 is 281 PPM (16.4 GPG), which is classified as very hard.
Do I need a water softener in 63020?
With hardness of 281 PPM, a water softener is recommended for homes in 63020.
Is hard water in 63020 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 63020?
Zip code 63020 in De Soto, Missouri is served by 15 water systems.
Learn More About Your Water
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