Hardness
Soft
50.1 PPM · 2.9 GPG
Local water dashboard
Official source aggregationWater quality in Belmont, NH 03220
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Belknap County.
2 reported benchmark flags
- Primary matched system
- Belmont Water Dept
- Source water
- Groundwater + Surface water
- County
- Belknap County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.034 mg/L
227% of action level
Utility match
10 systems
Serves 1,612 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
50.1 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
50.1
mg/L as CaCO₃ equivalent
Grains per gallon
2.9
1 GPG ≈ 17.1 PPM
What this means at home
At 50.1 PPM, mineral scale can build up on fixtures and heating elements, reduce soap lather, and leave visible spotting. Hardness is primarily an aesthetic and appliance concern—not itself a tap-water safety rating.
USGS sites used
60
Nearest site
8.1 mi
Observation range
Jan 13, 2016–Sep 25, 2023
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: NH-LSW 246 (Well).USGS source documentation ↗
Regional context
Is 03220 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Belmont median
50 PPM
About the same1 indexed ZIP readings · Range 50.1–50.1 PPM
New Hampshire median
58 PPM
8 PPM lower90 indexed ZIP readings · Range 16–102 PPM
EPA benchmark screen
Contaminant snapshot
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
0 pass2 fail
Lead (PB90)
0.034 mg/L
Reported Jun 30, 2019
Copper (CU90)
1.99 mg/L
Reported Dec 31, 1993
Numerical coverage
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 0.034
EPA limit 0.015
Copper (90th percentile)
Measured in mg/L
Local 1.99
EPA limit 1.3
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 16
- Health-based
- 0
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | NH0203030 | Resolved | Dec 31, 2024through Jan 10, 2025 |
| Public Notice | NH0202040 | Resolved | Dec 12, 2024through Dec 30, 2024 |
| Revised Total Coliform Rule | NH0203030 | Resolved | Sep 10, 2024through Oct 2, 2024 |
| Revised Total Coliform Rule | NH0203030 | Resolved | Aug 1, 2024through Sep 1, 2024 |
| Lead and Copper Rule | NH0203060 | Resolved | Jul 1, 2024through Jul 30, 2024 |
| Revised Total Coliform Rule | NH0203010 | Resolved | Apr 10, 2024through May 16, 2024 |
| Lead and Copper Rule | NH0202040 | Resolved | Jan 1, 2024through Nov 13, 2024 |
| Revised Total Coliform Rule | NH0202040 | Resolved | Jan 11, 2023through Feb 21, 2023 |
| Revised Total Coliform Rule | NH0202040 | Resolved | Oct 1, 2022through Nov 1, 2022 |
| Revised Total Coliform Rule | NH0202030 | Resolved | Aug 8, 2022through Jul 29, 2022 |
| Consumer Confidence Rule | NH0202040 | Resolved | Jul 1, 2022through Aug 31, 2022 |
| Revised Total Coliform Rule | NH0202030 | Resolved | Apr 1, 2022through May 1, 2022 |
| Lead and Copper Rule | NH0202040 | Resolved | Dec 30, 2021through Mar 21, 2022 |
| Revised Total Coliform Rule | NH0202040 | Resolved | Nov 10, 2021through Apr 15, 2022 |
| Revised Total Coliform Rule | NH0202040 | Resolved | Oct 1, 2021through Nov 1, 2021 |
| Consumer Confidence Rule | NH0202040 | Resolved | Jul 1, 2021through Aug 13, 2021 |
No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.
Solutions matcher
Your personalized water action plan
Matched to Belmont ZIP 03220 using 50.1 PPM nearby hardness and 2 reported measurement benchmarks.
Drinking water protection
Under-Sink Reverse Osmosis System
Lead (90th percentile), Copper (90th percentile) have a measured benchmark flag or active health-based SDWIS record in this profile.
A certified multi-stage RO system targets a broader range of dissolved contaminants at the kitchen tap.
Explore under-sink filtrationAffiliate disclosure: we may earn a commission from qualifying purchases, at no added cost to you. Product matching is educational and does not replace certified water testing.
Frequently asked
Water questions for Belmont
Is tap water safe in Belmont?+
EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.
How hard is the water?+
Nearby USGS observations produce an estimate of 50.1 PPM, or 2.9 grains per gallon, classified as soft. This is not a household tap measurement.
Do I need a water softener?+
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.