Hardness
Very Hard
283 PPM · 16.5 GPG
Local water dashboard
Official source aggregationWater quality in St. Augustine, FL 32080
A 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.
1 active health-based violation
- Primary matched system
- Sjcu-Cr214 Mainland Wtp
- Source water
- Groundwater
- County
- St. Johns County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
Review needed
1 active health-based record
Lead 90th percentile
0 mg/L
0% of action level
Utility match
8 systems
Serves 66,953 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
283 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
283
mg/L as CaCO₃ equivalent
Grains per gallon
16.5
1 GPG ≈ 17.1 PPM
What this means at home
At 283 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
11
Nearest site
13.4 mi
Observation range
Nov 20, 2019–Jan 21, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Palm Coast SA Well SW-126 AAL2093 (Well).USGS source documentation ↗
Regional context
Is 32080 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
St. Augustine median
282 PPM
About the same2 indexed ZIP readings · Range 280–283 PPM
Florida median
280 PPM
About the same602 indexed ZIP readings · Range 20–374.5 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.
1 pass
Lead (PB90)
0 mg/L
Reported Dec 1, 2025
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.
Lead (90th percentile)
Measured in mg/L
Local 0
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 40
- Health-based
- 1
- Active health-based
- 1
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Revised Total Coliform Rule | FL2554447 | Archived | Nov 1, 2025through Nov 30, 2025 |
| Revised Total Coliform Rule | FL2554471 | Archived | Jul 1, 2025through Jul 31, 2025 |
| Revised Total Coliform Rule | FL2554447 | Resolved | Feb 1, 2025through Feb 28, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | FL2551370 | Unaddressed | Feb 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | FL2551370 | Unaddressed | Feb 1, 2025 |
| Revised Total Coliform Rule | FL2554447 | Resolved | Dec 1, 2024through Jan 30, 2025 |
| Revised Total Coliform Rule | FL2554447 | Resolved | Sep 1, 2024through Sep 30, 2024 |
| Revised Total Coliform Rule | FL2554475 | Unaddressed | Sep 1, 2024 |
| Consumer Confidence Rule | FL2554447 | Resolved | Jul 1, 2024through Aug 10, 2024 |
| Consumer Confidence Rule | FL2554471 | Unaddressed | Jul 1, 2024 |
| Consumer Confidence Rule | FL2550210 | Unaddressed | Jul 1, 2024 |
| Consumer Confidence Rule | FL2554475 | Unaddressed | Jul 1, 2024 |
| Consumer Confidence Rule | FL2550812 | Resolved | Jul 1, 2024through Jan 7, 2025 |
| Consumer Confidence Rule | FL2551370 | Resolved | Jul 1, 2024through Jul 9, 2024 |
| Consumer Confidence Rule | FL2551459 | Resolved | Jul 1, 2024through Feb 18, 2026 |
| Revised Total Coliform Rule | FL2550210 | Archived | May 1, 2024through May 31, 2024 |
| Revised Total Coliform Rule | FL2554447 | Resolved | Feb 1, 2024through Feb 29, 2024 |
| TTHM | FL2551370 | Archived | Jan 1, 2024through Dec 31, 2024 |
| Total Haloacetic Acids (HAA5) | FL2551370 | Archived | Jan 1, 2024through Dec 31, 2024 |
| Total Haloacetic Acids (HAA5) | FL2551459 | Archived | Jan 1, 2024through Dec 31, 2024 |
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 St. Augustine ZIP 32080 using 283 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
283 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 systemsDrinking water protection
Under-Sink Reverse Osmosis System
LEAD AND COPPER RULE REVISIONS 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.
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
Compare ZIPs in St. Augustine
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for St. Augustine
Is tap water safe in St. Augustine?+
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.
How hard is the water?+
Nearby USGS observations produce an estimate of 283 PPM, or 16.5 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 283 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.