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Water Hardness in 05446

Colchester, Vermont · Chittenden County

69 PPM
4 GPG
Slightly Hard
0Soft60120180300+
Verified — Annual Water Quality Report

Dataset updated March 9, 2026Matched to 11 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

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.

Source basis
3 verified treated-water sources
11 matched systems total for this ZIP; treated-water reports are prioritized when available.
Water source profile
Primarily surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

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 05446

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.

11 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Burlington Dept Public Works Water Div
VT0005053
Slightly Hard
69 PPMsurface water42,000 servedVerified — Annual Water Quality Report
Source water: 63 PPM
South Burlington City Water System
VT0005091
Slightly Hard
69 PPMsurface water19,500 servedVerified — Annual Water Quality Report
Source water: 63 PPM
Colchester Water System
VT0021810
Slightly Hard
69 PPMsurface water11,299 servedVerified — Annual Water Quality Report
Source water: 63 PPM
Colchester Fire District 2
VT0005059
Slightly Hard
63 PPMsurface water8,300 servedHigh Confidence — USGS Monitoring
Westbury Park
VT0020466
Slightly Hard
104 PPMsurface water663 servedEstimated — County Avg
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

05404680540169054866305468690540369054527605495730548269054946905458631291118512903185

What This Means For You

Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Slightly Hard Water

Your water is slightly hard. You may notice minor spotting on dishes or a slight film on faucets. A water softener is optional but can improve water quality.

Recommended Products

Water Hardness Test Kit
Our PickVarify (150 Strips)Also GreatJNW Direct (150 Strips)
Salt-Free Water Conditioner
Our PickSpringWell Salt-Free Cartridge

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | 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 Colchester, VT (05446).

Submit Your Data

Frequently Asked Questions

Is the water hard in Colchester, VT (05446)?

The average water hardness in 05446 is 69 PPM (4 GPG), which is classified as slightly hard.

Do I need a water softener in 05446?

At 69 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 05446 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 05446?

Zip code 05446 in Colchester, Vermont is served by 11 water systems.

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