Hardness
Very Hard
368 PPM · 21.5 GPG
Local water dashboard
Official source aggregationWater quality in Lakeland, FL 33811
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Polk County.
6 active health-based violations
- Primary matched system
- Lakeland, City Of
- Source water
- Groundwater
- County
- Polk County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
Review needed
6 active health-based records
Lead 90th percentile
0.001 mg/L
7% of action level
Utility match
10 systems
Serves 193,297 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
368 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
368
mg/L as CaCO₃ equivalent
Grains per gallon
21.5
1 GPG ≈ 17.1 PPM
What this means at home
At 368 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
67
Nearest site
13.4 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: POLK CO TEST HOLE AT 2474-3120 FT NR BARTOW FL (Test hole not completed as a well).USGS source documentation ↗
Regional context
Is 33811 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Lakeland median
368 PPM
About the same6 indexed ZIP readings · Range 363.5–371 PPM
Florida median
280 PPM
88 PPM higher602 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)
0.001 mg/L
Reported Dec 1, 2024
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 0.001
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 338
- Health-based
- 7
- Active health-based
- 6
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Revised Total Coliform Rule | FL6531014 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6530852 | Archived | Mar 1, 2026through Mar 31, 2026 |
| E. COLI | FL6532348 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6532348 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6532587 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6534868 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6531796 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6532779 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6530079 | Archived | Mar 1, 2026through Mar 31, 2026 |
| E. COLI | FL6530079 | Archived | Mar 1, 2026through Mar 31, 2026 |
| E. COLI | FL6534999 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6534999 | Archived | Mar 1, 2026through Mar 31, 2026 |
| E. COLI | FL6531222 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6531222 | Archived | Mar 1, 2026through Mar 31, 2026 |
| E. COLI | FL6531161 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6531161 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6531596 | Archived | Mar 1, 2026through Mar 31, 2026 |
| E. COLI | FL6531596 | Archived | Mar 1, 2026through Mar 31, 2026 |
| E. COLI | FL6531923 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | FL6531923 | Archived | Mar 1, 2026through Mar 31, 2026 |
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 Lakeland ZIP 33811 using 368 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
368 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 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.
Nearby indexed reports
Compare ZIPs in Lakeland
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Lakeland
Is tap water safe in Lakeland?+
EPA ECHO reports 6 active health-based violations 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 368 PPM, or 21.5 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 368 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.