Data & Methodology — Wakulla County

Full contaminant data, sample history, and sourcing for Wakulla County. For readers who want to go beyond the summary.

Contaminant Data — All Analytes

868 well testing events on record, covering 23 analytes. Data spans 1954 to 2025.

Contaminant Samples Years Detection Rate Distribution LowModHigh vs. Limit vs. FL Avg
Radon 3 2002–2015 100%
157% of limit ↑ 434% above
Iron 54 1965–2024 96%
35% of limit ↓ 83% below
PFOS municipal 22 2024–2025 32%
162% of limit ↓ 23% below
Manganese 47 1965–2024 98%
7% of limit ↓ 74% below
Chloride 326 1962–2025 100%
4% of limit ↓ 92% below
Lead 43 2002–2024 95%
1% of limit ↓ 58% below
Nitrate 8 1975–2015 50%
4% of limit ↑ 30% above
PFHxS municipal 22 2024–2025 0%
— —
Sulfate 304 1965–2025 99%
4% of limit ↓ 85% below
Uranium 4 2002–2015 100%
0% of limit ↓ 90% below
Arsenic 43 2002–2024 100%
7% of limit ↓ 48% below
PFNA municipal 22 2024–2025 0%
— —
PFOA municipal 22 2024–2025 0%
— —
Fluoride 301 1965–2025 90%
3% of limit ↓ 54% below
HFPO-DA (GenX) municipal 22 2024–2025 0%
— —
Nitrite 452 1975–2018 99%
0% of limit ↓ 90% below
PFBS municipal 22 2024–2025 5%
— ↓ 28% below
Fecal Coliform 44 2013–2021 100%
— ~ typical
E. coli 48 2015–2025 98%
— ~ typical
pH 385 1971–2025 100%
— ~ typical
Sodium 301 1975–2025 100%
— ↓ 91% below
Total Coliform 92 2013–2025 99%
— ~ typical
Hardness 77 1965–2015 100%
— ↓ 33% below

Distribution shows the share of samples in each concentration band relative to the EPA Maximum Contaminant Level (MCL): Low = below half the MCL, Moderate = between half and the MCL, High = above the MCL. Analytes without an MCL (e.g. sodium, pH) show — in the limit columns. State average is based on county median values across FL.

Compare your result with Wakulla County

Of the 43 arsenic tests on record for Wakulla County (2002–2024), 0% found none, and half were below 0.68 µg/L.

Of the 326 chloride tests on record for Wakulla County (1962–2025), 0% found none, and half were below 9.2 mg/L.

Of the 301 fluoride tests on record for Wakulla County (1965–2025), 10% found none, and half were below 130 µg/L.

Of the 54 iron tests on record for Wakulla County (1965–2024), 4% found none, and half were below 99 µg/L.

Of the 43 lead tests on record for Wakulla County (2002–2024), 5% found none, and half were below 0.2 µg/L.

Of the 47 manganese tests on record for Wakulla County (1965–2024), 2% found none, and half were below 3.4 µg/L.

Of the 304 sulfate tests on record for Wakulla County (1965–2025), 1% found none, and half were below 10 mg/L.

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Data Coverage & Gaps

Well-sampled analytes (15+ samples)

  • Iron 54 samples
  • Manganese 47 samples
  • Chloride 326 samples
  • Lead 43 samples
  • Sulfate 304 samples
  • Arsenic 43 samples
  • Fluoride 301 samples
  • Nitrite 452 samples
  • Fecal Coliform 44 samples
  • E. coli 48 samples
  • pH 385 samples
  • Sodium 301 samples
  • Total Coliform 92 samples
  • Hardness 77 samples

Limited data (<15 samples) — interpret with caution

  • Radon 3 samples
  • Nitrate 8 samples
  • Uranium 4 samples

No private-well PFAS data for Wakulla County

We have no private well sampling data for PFAS compounds (PFOA, PFOS, PFNA, and related chemicals) in Wakulla County. PFAS has been detected in local public water systems (UCMR 5 data) — indicated by the "municipal" badge in the table above — but this does not directly indicate private well contamination. PFAS testing for private wells requires a dedicated lab panel (~$300–$500). If you are near a military base, airport, or industrial site, consider testing proactively. Learn more about PFAS →

Public vs. Private Water in Wakulla County

11 Active public water systems
30,881 Residents on public water
58% Households on private wells

Public water systems in Wakulla County are regulated by the EPA and must test and report contaminant levels. Private well owners are responsible for their own testing — there is no routine monitoring of private wells by any government agency.

CDC Health Outcome Correlations

Where contaminants detected in Wakulla County have established associations with specific health outcomes, we cross-reference CDC PLACES county-level prevalence data. This is a contextual signal, not a causal claim.

Contaminant Associated Condition Wakulla County Prevalence FL Average Source Year
PFOS Cancer prevalence 6.9% 6.8% 2020

Source: CDC PLACES county-level estimates. Raw data: Download Wakulla County CDC PLACES data →

Data Sources

This report aggregates data from the following public databases:

Methodology

Raw records are downloaded from the Water Quality Portal and normalized to µg/L (ppb). Records are deduplicated by sample ID and date, and certified outliers are excluded. Analyte names are mapped to EPA canonical forms. Detection rates, distribution bands, and MCL comparisons are computed from the normalized dataset.

Distribution bands use the EPA Maximum Contaminant Level as the threshold: concentrations below 50% of the MCL are classed as Low, between 50% and 100% as Moderate, and above 100% as High. For analytes without an MCL (sodium, hardness, pH), distribution is not computed.

State comparison uses the median of county median values across all counties in FL with at least one sample for that analyte.

Last updated: 2026-08-12

Full methodology →