Hardness
Very Hard
345 PPM · 20.2 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 Lake County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
345 PPM · 20.2 GPG
Compliance screen
Review needed
2 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
10 systems
Serves 18,675 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
345 PPM
Parts per million
345
mg/L as CaCO₃ equivalent
Grains per gallon
20.2
1 GPG ≈ 17.1 PPM
What this means at home
At 345 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
62
Nearest site
14.6 mi
Observation range
Jan 13, 2016–May 27, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: EUSTIS WELL NO. 2 AAE5699 (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.
Lady Lake median
347 PPM
About the same2 indexed ZIP readings · Range 345–349 PPM
Florida median
280 PPM
65 PPM higher602 indexed ZIP readings · Range 20–374.5 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 1, 2025
Copper (CU90)
1.4 mg/L
Reported Dec 1, 2009
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 1.4
EPA limit 1.3
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| E. COLI | FL3354781 | Archived | Sep 1, 2025through Sep 30, 2025 |
| Revised Total Coliform Rule | FL3354781 | Archived | Sep 1, 2025through Sep 30, 2025 |
| E. COLI | FL3350152 | Unaddressed | Sep 1, 2025 |
| Consumer Confidence Rule | FL6605023 | Unaddressed | Jul 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | FL6605023 | Unaddressed | Feb 1, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | FL6605023 | Unaddressed | Feb 1, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | FL3354926 | Unaddressed | Feb 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | FL3354926 | Unaddressed | Feb 1, 2025 |
| Revised Total Coliform Rule | FL3350679 | Archived | Nov 1, 2024through Nov 30, 2024 |
| E. COLI | FL3350679 | Archived | Nov 1, 2024through Nov 30, 2024 |
| Consumer Confidence Rule | FL3350679 | Unaddressed | Jul 1, 2024 |
| Total Haloacetic Acids (HAA5) | FL3350977 | Resolved | Jan 1, 2022through Dec 31, 2022 |
| Lead and Copper Rule | FL3350679 | Unaddressed | Jan 1, 2022 |
| Lead and Copper Rule | FL3354926 | Unaddressed | Jan 1, 2006 |
| Lead and Copper Rule | FL3354781 | Unaddressed | Jun 1, 2005 |
| Consumer Confidence Rule | FL3350942 | Unaddressed | Jul 1, 2004 |
| Consumer Confidence Rule | FL3354781 | Unaddressed | Jul 1, 2004 |
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 Lady Lake ZIP 32159 using 345 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
345 PPM is 3× the high-hardness trigger used by this matcher.
Designed to reduce scale on fixtures, water heaters, glassware, and plumbing throughout the home.
Compare whole-house systemsDrinking 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.
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.
Nearby indexed reports
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
EPA ECHO reports 2 active health-based violations among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
Nearby USGS observations produce an estimate of 345 PPM, or 20.2 grains per gallon, classified as very hard. This is not a household tap measurement.
At 345 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.