Water Hardness in 98346
Kingston, Washington · Kitsap County
Dataset updated March 9, 2026Matched to 11 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 11 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 98346
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 |
|---|---|---|---|
| Bremerton City Of WA5308200 | surface water | 45 PPM Soft | |
| West Sound Utility District #1 WA5302600 | groundwater | 67 PPM Slightly Hard | |
| Silverdale Water Dist 16 WA5379300 | groundwater | 77 PPM Slightly Hard | |
| North Perry Ave Water District WA5360950 | groundwater | 67 PPM Slightly Hard | |
| Poulsbo City Of WA5369150 | groundwater | 77 PPM Slightly 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 Kingston, WA (98346).
Frequently Asked Questions
Is the water hard in Kingston, WA (98346)?
The average water hardness in 98346 is 64 PPM (3.7 GPG), which is classified as slightly hard.
Do I need a water softener in 98346?
At 64 PPM, your water is relatively soft. A water softener is generally not necessary.
Is hard water in 98346 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 98346?
Zip code 98346 in Kingston, Washington is served by 11 water systems.
Learn More About Your Water
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