Full contaminant data, sample history, and sourcing for Livingston County. For readers who want to go beyond the summary.
Contaminant Data — All Analytes
49 well testing events on record, covering
23 analytes.
Data spans 1954 to 2021.
Contaminant
Samples
Years
Detection Rate
Distribution LowModHigh
vs. Limit
vs. NY Avg
Iron
31
1964–2020
97%
40% of limit
↓ 79% below
Manganese
25
1964–2020
80%
87% of limit
↓ 72% below
Radon
18
2005–2020
100%
45% of limit
↓ 59% below
Chloride
32
1964–2020
100%
12% of limit
↓ 58% below
Sulfate
32
1964–2020
97%
13% of limit
~ typical
Arsenic
23
1971–2020
74%
11% of limit
↓ 41% below
Nitrate
32
1964–2020
69%
8% of limit
↓ 28% below
Fluoride
25
1964–2020
100%
5% of limit
~ typical
HFPO-DA (GenX)
municipal
14
2024–2025
0%
—
—
Lead
23
1971–2020
61%
3% of limit
↓ 32% below
Nitrite
18
1973–2020
6%
0% of limit
↓ 51% below
PFHxS
municipal
14
2024–2025
0%
—
—
PFNA
municipal
14
2024–2025
0%
—
—
PFOA
municipal
14
2024–2025
0%
—
—
PFOS
municipal
14
2024–2025
0%
—
—
Uranium
17
2005–2020
82%
1% of limit
↓ 53% below
Total Coliform
4
2005–2021
21%
—
~ typical
Sodium
25
1964–2020
100%
—
↓ 32% below
pH
34
1964–2021
100%
—
~ typical
PFBS
municipal
14
2024–2025
0%
—
—
Hardness
32
1964–2020
100%
—
↑ 45% above
Fecal Coliform
2
2005–2020
6%
—
~ typical
E. coli
4
2005–2021
11%
—
~ 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 NY.
Compare your result with Livingston County
Of the 23 arsenic tests on record for Livingston County (1971–2020),
26% found none, and half were below 0.88 µg/L.
Of the 32 chloride tests on record for Livingston County (1964–2020),
0% found none, and half were below 30.6 mg/L.
Of the 25 fluoride tests on record for Livingston County (1964–2020),
0% found none, and half were below 200 µg/L.
Of the 31 iron tests on record for Livingston County (1964–2020),
3% found none, and half were below 80 µg/L.
Of the 23 lead tests on record for Livingston County (1971–2020),
39% found none, and half were below 0.11 µg/L.
Of the 25 manganese tests on record for Livingston County (1964–2020),
20% found none, and half were below 30 µg/L.
Of the 32 nitrate tests on record for Livingston County (1964–2020),
31% found none, and half were below 64.5 µg/L.
Of the 32 sulfate tests on record for Livingston County (1964–2020),
3% found none, and half were below 32.9 mg/L.
Data Coverage & Gaps
Well-sampled analytes (15+ samples)
Iron 31 samples
Manganese 25 samples
Radon 18 samples
Chloride 32 samples
Sulfate 32 samples
Arsenic 23 samples
Nitrate 32 samples
Fluoride 25 samples
Lead 23 samples
Nitrite 18 samples
Uranium 17 samples
Sodium 25 samples
pH 34 samples
Hardness 32 samples
Limited data (<15 samples) — interpret with caution
Total Coliform 4 samples
Fecal Coliform 2 samples
E. coli 4 samples
No private-well PFAS data for Livingston County
We have no private well sampling data for PFAS compounds (PFOA, PFOS, PFNA, and related chemicals) in Livingston 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 →
CDC Health Outcome Correlations
Where contaminants detected in Livingston 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 Livingston 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 Livingston County. Census data explorer →
USGS Aquifer Atlas — principal aquifer type underlying Livingston 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 Livingston County, used in contamination risk scoring. TRI Explorer →
EPA Superfund NPL — National Priorities List sites in or near Livingston 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 NY with at least one sample for that analyte.