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Water Hardness in 03220

Belmont, New Hampshire · Belknap County

21 PPM
1.2 GPG
Soft
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 14 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 14 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
12 USGS-backed sources
14 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.
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 03220

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.

14 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.
Laconia Water Works
NH1281010
Soft
21 PPMsurface water21,000 servedEstimated — County Avg
Belmont Water Dept
NH0201010
Soft
21 PPMgroundwater1,612 servedEstimated — County Avg
Pine Gardens Mhp
NH0203040
Soft
21 PPMgroundwater413 servedHigh Confidence — USGS Monitoring
Mallards Landing
NH0203080
Soft
21 PPMgroundwater325 servedHigh Confidence — USGS Monitoring
Lakes Region Mhp Coop Ii
NH0203090
Soft
21 PPMgroundwater276 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

032761603237210324621032692103837210322416033071603810210323517032531803256200321826

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 Belmont, NH (03220).

Submit Your Data

Frequently Asked Questions

Is the water hard in Belmont, NH (03220)?

The average water hardness in 03220 is 21 PPM (1.2 GPG), which is classified as soft.

Do I need a water softener in 03220?

At 21 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 03220 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 03220?

Zip code 03220 in Belmont, New Hampshire is served by 14 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.

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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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