Data & Methodology — Jackson County

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

Contaminant Data — All Analytes

519 well testing events on record, covering 23 analytes. Data spans 1960 to 2024.

Contaminant Samples Years Detection Rate Distribution LowModHigh vs. Limit vs. FL Avg
PFOS municipal 18 2024–2025 22%
181% of limit ~ typical
Iron 90 1962–2025 64%
10% of limit ↓ 95% below
Nitrate 118 1962–2025 97%
17% of limit ↑ 425% above
Manganese 89 1995–2025 62%
2% of limit ↓ 92% below
Arsenic 65 1995–2025 80%
2% of limit ↓ 81% below
Chloride 424 1962–2025 100%
2% of limit ↓ 96% below
Fluoride 405 1962–2025 84%
3% of limit ↓ 61% below
HFPO-DA (GenX) municipal 18 2024–2025 0%
— —
Lead 60 1995–2025 92%
1% of limit ↓ 58% below
Nitrite 116 1993–2025 20%
3% of limit ↑ 143% above
PFHxS municipal 18 2024–2025 11%
43% of limit ~ typical
PFNA municipal 18 2024–2025 0%
— —
PFOA municipal 18 2024–2025 0%
— —
Radon 28 1995–2015 100%
6% of limit ↓ 78% below
Sulfate 424 1962–2025 99%
1% of limit ↓ 97% below
Uranium 17 1995–2023 59%
1% of limit ↓ 35% below
Total Coliform 68 2002–2025 94%
— ~ typical
Sodium 424 1962–2025 100%
— ↓ 97% below
pH 505 1962–2025 100%
— ~ typical
PFBS municipal 18 2024–2025 11%
— ↓ 34% below
Hardness 106 1962–2023 97%
— ↓ 50% below
Fecal Coliform 38 1993–2021 66%
— ~ typical
E. coli 30 2002–2025 79%
— ~ typical

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 Jackson County

Of the 65 arsenic tests on record for Jackson County (1995–2025), 20% found none, and half were below 0.21 µg/L.

Of the 424 chloride tests on record for Jackson County (1962–2025), 0% found none, and half were below 4.6 mg/L.

Of the 405 fluoride tests on record for Jackson County (1962–2025), 16% found none, and half were below 64 µg/L.

Of the 90 iron tests on record for Jackson County (1962–2025), 36% found none, and half were below 30 µg/L.

Of the 60 lead tests on record for Jackson County (1995–2025), 8% found none, and half were below 0.2 µg/L.

Of the 89 manganese tests on record for Jackson County (1995–2025), 38% found none, and half were below 1 µg/L.

Of the 118 nitrate tests on record for Jackson County (1962–2025), 3% found none, and half were below 1.59 mg/L.

Of the 424 sulfate tests on record for Jackson County (1962–2025), 1% found none, and half were below 1.65 mg/L.

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Data Coverage & Gaps

Well-sampled analytes (15+ samples)

  • Iron 90 samples
  • Nitrate 118 samples
  • Manganese 89 samples
  • Arsenic 65 samples
  • Chloride 424 samples
  • Fluoride 405 samples
  • Lead 60 samples
  • Nitrite 116 samples
  • Radon 28 samples
  • Sulfate 424 samples
  • Uranium 17 samples
  • Total Coliform 68 samples
  • Sodium 424 samples
  • pH 505 samples
  • Hardness 106 samples
  • Fecal Coliform 38 samples
  • E. coli 30 samples

No private-well PFAS data for Jackson County

We have no private well sampling data for PFAS compounds (PFOA, PFOS, PFNA, and related chemicals) in Jackson 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 Jackson County

62 Active public water systems
27,833 Residents on public water
65% Households on private wells

Public water systems in Jackson 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 Jackson 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 Jackson County Prevalence FL Average Source Year
Nitrate Cancer prevalence 7.4% 6.8% 2020

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