Hardness
Soft
53 PPM · 3.1 GPG
Local water dashboard
Official source aggregationA source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Litchfield County.
At a glance
EPA quarter 2026Q2
Hardness
Soft
53 PPM · 3.1 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
6 systems
Serves 37,915 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
53 PPM
Parts per million
53
mg/L as CaCO₃ equivalent
Grains per gallon
3.1
1 GPG ≈ 17.1 PPM
What this means at home
At 53 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
103
Nearest site
13 mi
Observation range
Jan 4, 2016–Jun 4, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: NAUGATUCK RIVER NR WATERVILLE,CT. (Stream).USGS source documentation ↗
Regional context
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Litchfield median
53 PPM
About the same1 indexed ZIP readings · Range 53–53 PPM
Connecticut median
53 PPM
About the same98 indexed ZIP readings · Range 42.8–114 PPM
EPA benchmark screen
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
Lead (PB90)
0 mg/L
Reported Dec 31, 2026
Copper (CU90)
2.3 mg/L
Reported Dec 31, 1993
Numerical coverage
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Measured in mg/L
Local 0
EPA limit 0.015
Measured in mg/L
Local 2.3
EPA limit 1.3
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Consumer Confidence Rule | CT0740301 | Resolved | Aug 10, 2025through Aug 12, 2025 |
| Consumer Confidence Rule | CT0743011 | Resolved | Aug 10, 2025through Aug 28, 2025 |
| Consumer Confidence Rule | CT0740301 | Resolved | Jul 1, 2025through Aug 6, 2025 |
| Consumer Confidence Rule | CT0743011 | Resolved | Jul 1, 2025through Aug 19, 2025 |
| E. COLI | CT0745093 | Resolved | Jul 22, 2024through Jul 29, 2024 |
| Consumer Confidence Rule | CT0740301 | Resolved | Jul 1, 2024through Aug 9, 2024 |
| Consumer Confidence Rule | CT0743011 | Resolved | Jul 1, 2024through Aug 8, 2024 |
| Public Notice | CT0740301 | Resolved | May 2, 2024through Aug 27, 2024 |
| Public Notice | CT0740301 | Resolved | May 2, 2024through Aug 27, 2024 |
| Public Notice | CT0740301 | Resolved | May 2, 2024through Aug 27, 2024 |
| Public Notice | CT0740301 | Resolved | May 2, 2024through Aug 27, 2024 |
| Public Notice | CT0740301 | Resolved | May 2, 2024through Aug 27, 2024 |
| Nitrate | CT0743011 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| Consumer Confidence Rule | CT0740301 | Resolved | Jul 1, 2023through Jul 20, 2023 |
| Consumer Confidence Rule | CT0743011 | Resolved | Jul 1, 2023through Jul 6, 2023 |
| Revised Total Coliform Rule | CT0743011 | Resolved | May 1, 2023through May 31, 2023 |
| Chlorine | CT0743011 | Resolved | Apr 1, 2023through Jun 30, 2023 |
| Revised Total Coliform Rule | CT0743011 | Resolved | Mar 1, 2023through Mar 31, 2023 |
| Revised Total Coliform Rule | CT0743011 | Resolved | Feb 1, 2023through Feb 28, 2023 |
| Nitrate | CT0743011 | Resolved | Jan 1, 2023through Mar 31, 2023 |
No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.
Solutions matcher
Matched to Litchfield ZIP 06759 using 53 PPM nearby hardness and 2 reported measurement benchmarks.
Drinking water protection
Copper (90th percentile) has 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.
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Frequently asked
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.
Nearby USGS observations produce an estimate of 53 PPM, or 3.1 grains per gallon, classified as soft. This is not a household tap measurement.
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.