Well Water in Sarasota County: What to Test and Why

High Risk
Testing Strongly Recommended 3991 well tests on record
Top Concerns in This County
Arsenic Pfoa Iron

Why This Happens Here

No contaminants have been detected in Sarasota County's groundwater at levels of health concern. Contaminant levels here are low, which is good news for well owners.

The surficial aquifer system in this county sits close to the surface and is naturally protected by sandy soil and sediment that act like a filter. This shallow groundwater system has not accumulated harmful contamination because the local land use and geology work together to keep it clean. The sandy layers above and around the aquifer do a good job of screening out pollutants before they reach the water that supplies your well.

Water from this county's wells draws from sandy and shell-based rock layers that do not typically add strong mineral character. Without detailed mineral data available, the sandy composition of the surficial aquifer suggests water here is likely to be relatively clean and free of the heavy minerals that accumulate in harder rock types. Most wells in this county should deliver water with modest mineral content.

What This Means for You

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Contaminant Detection Data

Contaminant Samples % Above MCL Distribution Confidence Risk
Sulfate 3541 66%
High High
Chloride 3706 25%
High High
Arsenic 91 15%
Moderate High
PFOA ⓘ municipal 33 12%
Moderate Moderate
Iron 1825 12%
High Moderate
Lead 261 4%
High Moderate
Elevated concentration, not % above limit
PFOS ⓘ municipal 33 3%
Moderate Moderate
Elevated concentration, not % above limit
Manganese 1644 2%
High Low
Fluoride 2748 1%
High Low
Uranium 125 1%
High Low
HFPO-DA (GenX) ⓘ municipal 33 0%
Moderate Safe
Nitrite 121 0%
High Low
PFNA ⓘ municipal 33 0%
Moderate Safe
PFHxS ⓘ municipal 33 0%
Moderate Safe
Nitrate 319 0%
High Low
Hardness 1483
High Low
Total Coliform 26* 0%
Moderate Low
PFBS ⓘ municipal 33
Moderate Low
E. coli 8* 0%
Low Low
Fecal Coliform 18* 0%
Moderate Low
pH 2526
High Low
Sodium 2469
High Low

MCL = Maximum Contaminant Level (EPA limit for public water; used as benchmark for private wells). Distribution shows % of sampled wells in each concentration band. Methodology.
* Microbial contaminants (E. coli, coliform) reflect only samples from the last 10 years.

Data shows potential risk — a certified test confirms whether your water is affected.

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Population Health Context

Population-level CDC data. Not individual risk prediction.

6.1%
Cancer Prevalence
(state avg: 6.8%)
4.1%
Kidney Disease Rate
(state avg: 3.4%)
5.4%
Heart Disease Rate
(state avg: 7.7%)

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