Hardness
Very Hard
227 PPM · 13.3 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 St. Johns County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
227 PPM · 13.3 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
7.0e-4 mg/L
5% of action level
Utility match
2 systems
Serves 485 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
227 PPM
Parts per million
227
mg/L as CaCO₃ equivalent
Grains per gallon
13.3
1 GPG ≈ 17.1 PPM
What this means at home
At 227 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
15
Nearest site
12 mi
Observation range
Dec 7, 2016–Jan 21, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: St Augustine SA Well 14 AAC2799 (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.
Fruit Cove median
227 PPM
About the same1 indexed ZIP readings · Range 227–227 PPM
Florida median
280 PPM
53 PPM lower602 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)
7.0e-4 mg/L
Reported Dec 1, 2023
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
1 comparable result
Missing values remain blank; absence is not treated as a pass.
Measured in mg/L
Local 7.0e-4
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Revised Total Coliform Rule | FL2554344 | Resolved | Jul 1, 2025through Jul 11, 2025 |
| E. COLI | FL2554344 | Resolved | Jul 1, 2025through Jul 11, 2025 |
| Consumer Confidence Rule | FL2550396 | Resolved | Jul 1, 2024through Jul 1, 2024 |
| Consumer Confidence Rule | FL2554344 | Resolved | Jul 1, 2024through Feb 18, 2026 |
| Lead and Copper Rule | FL2550396 | Unaddressed | Jan 1, 2006 |
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 Fruit Cove ZIP 32259 using 227 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
227 PPM is 2× 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 systemsAffiliate 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
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 227 PPM, or 13.3 grains per gallon, classified as very hard. This is not a household tap measurement.
At 227 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.