Marshall County Water Quality
Marshall 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.
Perfluorooctanoic acid (PFOA)LEWISBURG WATER SYSTEM4.0 ng/L federal MCL (2024) · US EPA8.8 ng/L
- LEWISBURG WATER SYSTEM8.8 ng/LSample date: 2023-05-09 to 2024-02-05
Perfluorooctanesulfonic acid (PFOS)LEWISBURG WATER SYSTEM4.0 ng/L federal MCL (2024) · US EPA5.3 ng/L
- LEWISBURG WATER SYSTEM5.3 ng/LSample date: 2023-05-09 to 2024-02-05
Lead (90th percentile)LEWISBURG WATER SYSTEM15 µg/L federal action level · US EPA1 µg/L
- LEWISBURG WATER SYSTEM1 µg/LMonitoring period: 2023–2025
Perfluorobutanesulfonic acid (PFBS)LEWISBURG WATER SYSTEM2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPA9.2 ng/L
- LEWISBURG WATER SYSTEM9.2 ng/LSample date: 2023-05-09 to 2024-02-05
Perfluorohexanoic acid (PFHxA)LEWISBURG WATER SYSTEM400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLE5.5 ng/L
- LEWISBURG WATER SYSTEM5.5 ng/LSample date: 2023-05-09 to 2024-02-05
Perfluorobutanoic acid (PFBA)LEWISBURG WATER SYSTEMNo federal or state limit; shown for transparency6.5 ng/L
- LEWISBURG WATER SYSTEM6.5 ng/LSample date: 2023-05-09 to 2024-02-05
Perfluoropentanoic acid (PFPeA)LEWISBURG WATER SYSTEMNo federal or state limit; shown for transparency4.7 ng/L
- LEWISBURG WATER SYSTEM4.7 ng/LSample date: 2023-05-09 to 2024-02-05
24 substances tested, none detected in this systemShow
Tested in this system: LEWISBURG 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)
- Perfluorodecanoic acid (PFDA)
- Perfluorododecanoic acid (PFDoA)
- Perfluoroheptanesulfonic acid (PFHpS)
- Perfluoroheptanoic acid (PFHpA)
- Perfluorohexanesulfonic acid (PFHxS)
- Perfluorononanoic acid (PFNA)
- Perfluoropentanesulfonic acid (PFPeS)
- 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
- LewisburgLEWISBURG WATER SYSTEM · TN000040024,569 served
Frequently asked
How does Marshall County tap water compare across cities?
PurityMap ranks 1 city in Marshall 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 Lewisburg's main water system: LEWISBURG WATER SYSTEM · PWSID TN0000400 · Purity Score 56 (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 Marshall County cities had a PFAS sample above a 2024 EPA limit?
1 of 1 Marshall County city report had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Lewisburg (PFOA 8.8 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 Marshall County tap water?
Utilities report lead as a 90th-percentile result from home taps. 1 of 1 Marshall 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.
Follow Marshall County's water
Get an email when a city record in the county changes. Or go straight to the filters certified for what was found here.
Record changes only
We email when places in Marshall County get new results. Unsubscribe any time.
Follow Marshall County's water →