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Updated 2026-10-15
County water report

Lake County Water Quality: 6 Cities Ranked by the Records

Lake County, Florida: 6 city reports built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.

Find my systemOpen on the mapPrivate wells in Lake County
Across the county's systems

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)Detected in 2 systems of 6 tested4.0 ng/L federal MCL (2024) · US EPAHighest9.8 ng/L
Perfluorooctanoic acid (PFOA)Detected in 2 systems of 6 tested4.0 ng/L federal MCL (2024) · US EPAHighest5.5 ng/L
LithiumDetected in 1 system of 6 tested10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest12 µg/L
Perfluorohexanesulfonic acid (PFHxS)Detected in 3 systems of 6 tested10 ng/L federal MCL (2024) · US EPAHighest5.2 ng/L
Lead (90th percentile)Detected in 2 systems of 6 tested15 µg/L federal action level · US EPAHighest2.5 µg/L
Perfluorobutanesulfonic acid (PFBS)Detected in 3 systems of 6 tested2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPAHighest12 ng/L
Perfluorohexanoic acid (PFHxA)Detected in 1 system of 6 tested400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLEHighest3.4 ng/L
Perfluoropentanoic acid (PFPeA)Detected in 2 systems of 6 testedNo federal or state limit; shown for transparencyHighest5.6 ng/L
23 PFAS tested, none detected in any systemShow

Tested in these 6 systems: CLERMONT EAST WATER SYSTEM (2 WPS), EUSTIS, CITY OF (4 WTPS), GROVELAND WATER DEPARTMENT, LEESBURG, CITY OF, MASCOTTE WATER DEPARTMENT, MOUNT DORA, CITY OF (2WPS)

  • 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)
  • 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)
  • Perfluorononanoic acid (PFNA)
  • Perfluoropentanesulfonic acid (PFPeS)
  • Perfluorotetradecanoic acid (PFTA)
  • Perfluorotridecanoic acid (PFTrDA)
  • Perfluoroundecanoic acid (PFUnA)
6 cities

Cities ranked by the records

Showing 6 of 6 cities · scores are system-level, not tap tests

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.

PFAS in Lake County3 of 6 city reports had a PFAS sample above a 2024 EPA limit
  1. Eustis9.8 ng/L
  2. Leesburg4.8 ng/L
4.0 ng/L federal MCL · PFOS, ng/LPFAS in Florida
Lead

0of 6 cities 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 Florida
Who supplies the county

Largest water systems

  1. LeesburgLEESBURG, CITY OF · FL3350745
    46,921 served
  2. EustisEUSTIS, CITY OF (4 WTPS) · FL3350346
    39,721 served
  3. Mount DoraMOUNT DORA, CITY OF (2WPS) · FL3350858
    39,710 served
  4. ClermontCLERMONT EAST WATER SYSTEM (2 WPS) · FL3354779
    39,279 served
  5. GrovelandGROVELAND WATER DEPARTMENT · FL3350476
    23,628 served
  6. MascotteMASCOTTE WATER DEPARTMENT · FL3350812
    12,355 served
Questions

Frequently asked

How does Lake County tap water compare across cities?

PurityMap ranks 6 cities in Lake 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 Clermont's main water system: CLERMONT EAST WATER SYSTEM (2 WPS) · PWSID FL3354779 · Purity Score 100 (Excellent) · 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 Lake County cities had a PFAS sample above a 2024 EPA limit?

3 of 6 Lake County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Eustis (PFOS 9.8 ng/L), Mount Dora (PFOA 5.5 ng/L), Leesburg (PFOS 4.8 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 4.

Is there lead in Lake County tap water?

Utilities report lead as a 90th-percentile result from home taps. 2 of 6 Lake 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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