Water Hardness in 06413
Clinton, Connecticut · Middlesex County
Dataset updated March 9, 2026Matched to 25 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 25 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 06413
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 |
|---|---|---|---|
| Middletown Water Department CT0830011 | surface water | 106 PPM Slightly Hard | |
| Ctwc - Shoreline Region-Guilford System CT0608011 | surface water | 21 PPM Soft | |
| Cromwell Fire District Water Department CT0330011 | groundwater | 102 PPM Slightly Hard | |
| Ctwc - Uconn South Eagleville Div. CT0787111 | surface water | 21 PPM Soft | |
| Ctwc - Northern Region-Lakeview Terrace CT0320021 | groundwater | 21 PPM Soft |
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 Clinton, CT (06413).
Frequently Asked Questions
Is the water hard in Clinton, CT (06413)?
The average water hardness in 06413 is 70 PPM (4.1 GPG), which is classified as slightly hard.
Do I need a water softener in 06413?
At 70 PPM, your water is relatively soft. A water softener is generally not necessary.
Is hard water in 06413 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 06413?
Zip code 06413 in Clinton, Connecticut is served by 25 water systems.
Learn More About Your Water
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