Full contaminant data, sample history, and sourcing for Lee County. For readers who want to go beyond the summary.
Contaminant Data — All Analytes
69 well testing events on record, covering
27 analytes.
Data spans 1938 to 2022.
Contaminant
Samples
Years
Detection Rate
Distribution LowModHigh
vs. Limit
vs. GA Avg
Iron
37
1978–2015
59%
8% of limit
↓ 80% below
Manganese
37
1978–2015
51%
18% of limit
↓ 70% below
Nitrate
28
1958–2015
96%
14% of limit
↑ 119% above
Fluoride
39
1958–2015
36%
2% of limit
↓ 60% below
HFPO-DA (GenX)
municipal
10
2023–2024
0%
—
—
Nitrite
25
1978–2015
16%
1% of limit
~ typical
PFOA
municipal
10
2023–2024
0%
—
—
Arsenic
21
1978–2015
19%
1% of limit
↓ 87% below
Chloride
57
1958–2015
98%
1% of limit
↓ 34% below
PFNA
municipal
10
2023–2024
0%
—
—
Arsenic
21
1978–2015
19%
1% of limit
↓ 87% below
Chloride
57
1958–2015
98%
1% of limit
↓ 34% below
Fluoride
39
1958–2015
36%
2% of limit
↓ 60% below
HFPO-DA (GenX)
municipal
10
2023–2024
0%
—
—
Lead
21
1978–2015
38%
0% of limit
↓ 75% below
Nitrite
25
1978–2015
16%
1% of limit
~ typical
PFHxS
municipal
10
2023–2024
0%
—
—
PFNA
municipal
10
2023–2024
0%
—
—
PFOA
municipal
10
2023–2024
0%
—
—
PFOS
municipal
10
2023–2024
0%
—
—
Radon
7
1993–2002
100%
7% of limit
↓ 62% below
Sulfate
40
1958–2015
90%
0% of limit
↓ 83% below
Uranium
14
1995–2015
79%
1% of limit
↑ 54% above
Hardness
39
1958–2015
100%
—
↑ 60% above
PFBS
municipal
10
2023–2024
0%
—
—
pH
45
1958–2015
100%
—
~ typical
Sodium
40
1958–2015
100%
—
↓ 63% 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 GA.
Compare your result with Lee County
Of the 21 arsenic tests on record for Lee County (1978–2015),
81% found none.
Of the 57 chloride tests on record for Lee County (1958–2015),
2% found none, and half were below 3.1 mg/L.
Of the 39 fluoride tests on record for Lee County (1958–2015),
64% found none.
Of the 37 iron tests on record for Lee County (1978–2015),
41% found none, and half were below 5 µg/L.
Of the 21 lead tests on record for Lee County (1978–2015),
62% found none.
Of the 37 manganese tests on record for Lee County (1978–2015),
49% found none, and half were below 80 ng/L.
Of the 28 nitrate tests on record for Lee County (1958–2015),
4% found none, and half were below 1.3 mg/L.
Of the 40 sulfate tests on record for Lee County (1958–2015),
10% found none, and half were below 630 µg/L.
Data Coverage & Gaps
Well-sampled analytes (15+ samples)
Iron 37 samples
Manganese 37 samples
Nitrate 28 samples
Fluoride 39 samples
Nitrite 25 samples
Arsenic 21 samples
Chloride 57 samples
Arsenic 21 samples
Chloride 57 samples
Fluoride 39 samples
Lead 21 samples
Nitrite 25 samples
Sulfate 40 samples
Hardness 39 samples
pH 45 samples
Sodium 40 samples
Limited data (<15 samples) — interpret with caution
Radon 7 samples
Uranium 14 samples
No private-well PFAS data for Lee County
We have no private well sampling data for PFAS compounds (PFOA, PFOS, PFNA, and related chemicals) in Lee County.
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 Lee County
16Active public water systems
26,931Residents on public water
36%Households on private wells
Public water systems in Lee 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 Lee 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.
This report aggregates data from the following public databases:
Water Quality Portal (WQP) — groundwater sample results for Lee County from EPA, USGS, and state agencies. Browse WQP data →
EPA Safe Drinking Water Information System (SDWIS) — public water system inventory used to estimate the share of residents on private wells. Browse SDWIS →
Census ACS 5-Year Estimates — well and cistern household counts (variable DP04_0074E) used to calculate the private-well percentage for Lee County. Census data explorer →
USGS Aquifer Atlas — principal aquifer type underlying Lee County, which informs which contaminants are geologically likely. USGS Aquifer Atlas →
EPA UCMR 5 (2023–2025) — PFAS occurrence data from public water systems, used as a proxy indicator for aquifer PFAS exposure. Rows marked "municipal" in the table above come from this source. About UCMR 5 →
EPA Toxics Release Inventory (TRI) — industrial facility chemical releases near Lee County, used in contamination risk scoring. TRI Explorer →
EPA Superfund NPL — National Priorities List sites in or near Lee County, used in contamination risk scoring. Superfund site search →
CDC PLACES — county-level health outcome prevalence (kidney disease, cancer, heart disease) correlated with detected contaminants. About CDC PLACES →
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 GA with at least one sample for that analyte.