Hardness
Moderately Hard
89.5 PPM · 5.2 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
Moderately Hard
89.5 PPM · 5.2 GPG
Compliance screen
Review needed
1 active health-based record
Lead 90th percentile
0 mg/L
0% of action level
Utility match
10 systems
Serves 13,331 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
89.5 PPM
Parts per million
89.5
mg/L as CaCO₃ equivalent
Grains per gallon
5.2
1 GPG ≈ 17.1 PPM
What this means at home
At 89.5 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
255
Nearest site
13.4 mi
Observation range
Apr 4, 2016–Dec 17, 2025
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: CT- SB 120 (Well).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.
New Milford median
90 PPM
About the same1 indexed ZIP readings · Range 89.5–89.5 PPM
Connecticut median
53 PPM
37 PPM higher98 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, 2027
Copper (CU90)
1.73 mg/L
Reported Dec 31, 2012
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 1.73
EPA limit 1.3
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | CT0960061 | Unaddressed | Jan 1, 2026 |
| Revised Total Coliform Rule | CT0960091 | Resolved | Dec 1, 2025through Dec 31, 2025 |
| Lead and Copper Rule | CT0960061 | Resolved | Sep 29, 2025through Feb 9, 2026 |
| E. COLI | CT0960071 | Resolved | Sep 10, 2025through Dec 9, 2025 |
| Consumer Confidence Rule | CT0960031 | Resolved | Aug 10, 2025through Sep 5, 2025 |
| Consumer Confidence Rule | CT0960061 | Resolved | Aug 10, 2025through Aug 23, 2025 |
| Consumer Confidence Rule | CT0960191 | Resolved | Aug 10, 2025through Dec 11, 2025 |
| Lead and Copper Rule | CT0960031 | Resolved | Jul 1, 2025through Dec 31, 2025 |
| Consumer Confidence Rule | CT0960031 | Resolved | Jul 1, 2025through Jul 7, 2025 |
| Consumer Confidence Rule | CT0960091 | Resolved | Jul 1, 2025through Jul 7, 2025 |
| Consumer Confidence Rule | CT0960061 | Resolved | Jul 1, 2025through Jul 12, 2025 |
| Consumer Confidence Rule | CT0960191 | Resolved | Jul 1, 2025through Dec 11, 2025 |
| Public Notice | CT0960151 | Resolved | Apr 10, 2025through May 21, 2025 |
| Lead and Copper Rule | CT0960061 | Resolved | Jan 1, 2025through Jan 21, 2025 |
| Groundwater RuleHealth-based | CT0960151 | Resolved | Nov 1, 2024through Nov 30, 2024 |
| Groundwater Rule | CT0960151 | Resolved | Nov 1, 2024through Nov 30, 2024 |
| LEAD AND COPPER RULE REVISIONSHealth-based | CT0960031 | Unaddressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONS | CT0960031 | Unaddressed | Oct 17, 2024 |
| Consumer Confidence Rule | CT0960061 | Resolved | Aug 10, 2024through Sep 27, 2024 |
| Consumer Confidence Rule | CT0960191 | Resolved | Aug 10, 2024through Dec 11, 2025 |
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 New Milford ZIP 06776 using 89.5 PPM nearby hardness and 2 reported measurement benchmarks.
Drinking water protection
Copper (90th percentile), LEAD AND COPPER RULE REVISIONS 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.
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Frequently asked
EPA ECHO reports 1 active health-based violation among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
Nearby USGS observations produce an estimate of 89.5 PPM, or 5.2 grains per gallon, classified as moderately hard. This is not a household tap measurement.
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.