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Water Hardness in 03307

Canterbury, New Hampshire · Merrimack County

16 PPM
1 GPG
Soft
0Soft60120180300+
Verified — Annual Water Quality Report

Dataset updated March 9, 2026Matched to 5 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 5 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
1 verified treated-water source
5 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 03307

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.

5 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.
Concord Water Dept
NH0501010
Soft
16 PPMsurface water44,215 servedVerified — Annual Water Quality Report
Source water: 41 PPM
Freedom Hill/Pine Ridge Est
NH1403030
Soft
41 PPMgroundwater370 servedHigh Confidence — USGS Monitoring
Villages At Loudon
NH1402020
Soft
41 PPMgroundwater250 servedHigh Confidence — USGS Monitoring
Kos Manufactured Housing Cmnty
NH1403010
Soft
41 PPMgroundwater137 servedHigh Confidence — USGS Monitoring
Presidential Pines/Lower
NH1403040
Soft
41 PPMgroundwater51 servedHigh Confidence — USGS Monitoring

Nearby Zip Codes

032241603237210326317038372103301160321826032761603220210323417032252103275190330318

What This Means For You

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

Your Water Is Soft

Your water hardness is in the soft range. You likely don't need a water softener. Enjoy your naturally soft 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 Canterbury, NH (03307).

Submit Your Data

Frequently Asked Questions

Is the water hard in Canterbury, NH (03307)?

The average water hardness in 03307 is 16 PPM (1 GPG), which is classified as soft.

Do I need a water softener in 03307?

At 16 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 03307 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 03307?

Zip code 03307 in Canterbury, New Hampshire is served by 5 water systems.

Learn More About Your Water

Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

10 min read

How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

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