Madison County Water Quality
Madison County, Tennessee: one city report built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.
Highest result for each contaminant
One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.
Perfluorooctanesulfonic acid (PFOS)JACKSON WATER SYSTEM4.0 ng/L federal MCL (2024) · US EPA20 ng/L
- JACKSON WATER SYSTEM20 ng/LSample date: 2024-05-20 to 2024-11-20
Perfluorohexanesulfonic acid (PFHxS)JACKSON WATER SYSTEM10 ng/L federal MCL (2024) · US EPA16.3 ng/L
- JACKSON WATER SYSTEM16.3 ng/LSample date: 2024-05-20 to 2024-11-20
Lead (90th percentile)JACKSON WATER SYSTEM15 µg/L federal action level · US EPA0.5 µg/L
- JACKSON WATER SYSTEM0.5 µg/LMonitoring period: 2023–2025
Perfluorobutanesulfonic acid (PFBS)JACKSON WATER SYSTEM2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPA3.7 ng/L
- JACKSON WATER SYSTEM3.7 ng/LSample date: 2024-05-20 to 2024-11-20
27 substances tested, none detected in this systemShow
Tested in this system: JACKSON WATER SYSTEM
- 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
- 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
- 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
- 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
- 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
- Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
- Lithium
- N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
- N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
- Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
- Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
- Perfluoro-3-methoxypropanoic acid (PFMPA)
- Perfluoro-4-methoxybutanoic acid (PFMBA)
- Perfluorobutanoic acid (PFBA)
- Perfluorodecanoic acid (PFDA)
- Perfluorododecanoic acid (PFDoA)
- Perfluoroheptanesulfonic acid (PFHpS)
- Perfluoroheptanoic acid (PFHpA)
- Perfluorohexanoic acid (PFHxA)
- Perfluorononanoic acid (PFNA)
- Perfluorooctanoic acid (PFOA)
- Perfluoropentanesulfonic acid (PFPeS)
- Perfluoropentanoic acid (PFPeA)
- Perfluorotetradecanoic acid (PFTA)
- Perfluorotridecanoic acid (PFTrDA)
- Perfluoroundecanoic acid (PFUnA)
Cities ranked by the records
Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.
0of 1 city above the 15 µg/L action level
Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.
Lead in TennesseeLargest water systems
- JacksonJACKSON WATER SYSTEM · TN000029991,111 served
Frequently asked
How does Madison County tap water compare across cities?
PurityMap ranks 1 city in Madison County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Jackson's main water system: JACKSON WATER SYSTEM · PWSID TN0000299 · Purity Score 57 (Fair) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.
How many Madison County cities had a PFAS sample above a 2024 EPA limit?
1 of 1 Madison County city report had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Jackson (PFOS 20 ng/L). That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. PFAS were detected at any level in 1.
Is there lead in Madison County tap water?
Utilities report lead as a 90th-percentile result from home taps. 1 of 1 Madison County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.
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