Water Hardness in 66047
Lawrence, Kansas · Douglas County
Dataset updated March 9, 2026Matched to 6 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 6 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 66047
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 |
|---|---|---|---|
| Lawrence, City Of KS2004503 | surface water | 160 PPM Moderately HardUSGS estimate: 197 PPM | |
| University Of Kansas KS2004513 | surface water | 160 PPM Moderately HardUSGS estimate: 197 PPM | |
| Douglas Co Rwd 5 KS2004502 | surface water | 160 PPM Moderately HardUSGS estimate: 197 PPM | |
| Jefferson Co Rwd 13 KS2008704 | groundwater | 160 PPM Moderately HardUSGS estimate: 453 PPM | |
| Douglas Co Rwd 1 KS2004506 | surface water | 160 PPM Moderately HardUSGS estimate: 197 PPM |
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 Lawrence, KS (66047).
Frequently Asked Questions
Is the water hard in Lawrence, KS (66047)?
The average water hardness in 66047 is 160 PPM (9.4 GPG), which is classified as moderately hard.
Do I need a water softener in 66047?
With hardness of 160 PPM, a water softener is worth considering for homes in 66047.
Is hard water in 66047 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 66047?
Zip code 66047 in Lawrence, Kansas is served by 6 water systems.
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