Data & Methodology — Brevard County

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

Contaminant Data — All Analytes

382 well testing events on record, covering 23 analytes. Data spans 1947 to 2023.

Contaminant Samples Years Detection Rate Distribution LowModHigh vs. Limit vs. FL Avg
Chloride 351 1934–2024 100%
220% of limit ↑ 350% above
Radon 6 2015–2019 100%
123% of limit ↑ 320% above
PFOS municipal 34 2023–2025 21%
217% of limit ~ typical
PFOA municipal 34 2023–2025 18%
201% of limit ↑ 41% above
Sulfate 261 1947–2024 100%
46% of limit ↑ 73% above
Iron 250 1955–2024 99%
10% of limit ↓ 95% below
Arsenic 243 1980–2024 99%
5% of limit ↓ 62% below
Manganese 243 1980–2024 100%
4% of limit ↓ 85% below
PFNA municipal 34 2023–2025 0%
— —
PFHxS municipal 34 2023–2025 15%
47% of limit ~ typical
Fluoride 36 1955–2024 100%
7% of limit ~ typical
HFPO-DA (GenX) municipal 34 2023–2025 0%
— —
Nitrite 8 1970–2019 50%
0% of limit ↓ 95% below
Lead 243 1980–2024 98%
0% of limit ↓ 89% below
Nitrate 13 1955–2019 62%
1% of limit ↓ 75% below
Uranium 6 2015–2019 33%
1% of limit ↓ 45% below
Hardness 24 1955–2019 100%
— ↑ 269% above
Total Coliform 26 2015–2024 79%
— ~ typical
E. coli 11 2015–2024 54%
— ~ typical
Fecal Coliform 15 2017–2021 100%
— ~ typical
PFBS municipal 34 2023–2025 26%
— ~ typical
Sodium 251 1955–2024 100%
— ↑ 232% above
pH 279 1947–2024 100%
— ~ 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 Brevard County

Of the 243 arsenic tests on record for Brevard County (1980–2024), 1% found none, and half were below 0.5 µg/L.

Of the 351 chloride tests on record for Brevard County (1934–2024), 0% found none, and half were below 550 mg/L.

Of the 36 fluoride tests on record for Brevard County (1955–2024), 0% found none, and half were below 275 µg/L.

Of the 250 iron tests on record for Brevard County (1955–2024), 1% found none, and half were below 28.5 µg/L.

Of the 243 lead tests on record for Brevard County (1980–2024), 2% found none, and half were below 52 ng/L.

Of the 243 manganese tests on record for Brevard County (1980–2024), 0% found none, and half were below 2.01 µg/L.

Of the 261 sulfate tests on record for Brevard County (1947–2024), 0% found none, and half were below 114 mg/L.

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Data Coverage & Gaps

Well-sampled analytes (15+ samples)

  • Chloride 351 samples
  • Sulfate 261 samples
  • Iron 250 samples
  • Arsenic 243 samples
  • Manganese 243 samples
  • Fluoride 36 samples
  • Lead 243 samples
  • Hardness 24 samples
  • Total Coliform 26 samples
  • Fecal Coliform 15 samples
  • Sodium 251 samples
  • pH 279 samples

Limited data (<15 samples) — interpret with caution

  • Radon 6 samples
  • Nitrite 8 samples
  • Nitrate 13 samples
  • Uranium 6 samples
  • E. coli 11 samples

No private-well PFAS data for Brevard County

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

82 Active public water systems
738,073 Residents on public water
8% Households on private wells

Public water systems in Brevard 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 Brevard 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 Brevard County Prevalence FL Average Source Year
Arsenic Cancer prevalence 6.0% 6.8% 2020
Arsenic Kidney disease rate 3.6% 3.4% 2020

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