The Nearshore Human Health monitoring program collects Escherichia Coli (E. coli) samples to help resource managers ensure Lake Tahoe’s waters remain safe for public recreation. Water quality samples are collected between June and September at many beaches around the lake. Current data and more information about the sampling program are available here.

Program Overview
Nearshore Human Health, E. coli monitoring
Water Quality

Water quality samples for E. coli are taken throughout the summer at popular beaches around Lake Tahoe. E. coli is an indicator of the presence of harmful pathogens or viruses associated with recent contamination by wastewater or other fecal contamination. Individuals who swim in or contact water with elevated levels of E. coli may be at risk of getting sick because of potential exposure to harmful pathogens or viruses associated with wastewater or other fecal contamination.

Images
Dashboard

No dashboard available.

Documents
2023 Nearshore Human Health Monitoring Report (E. coli)
3/11/2024
PDF
2023 Human Health Monitoring Report

2023 Nearshore Human Health Sampling and Analysis Plan (E. coli)
3/14/2024
PDF
SHORELINE HUMAN HEALTH WATER QUALITY MONITORING 2023 SAMPLING AND ANALYSIS PLAN

2024 Nearshore Human Health Monitoring Report (E. coli)
12/8/2025
PDF
Reporting on the 2024 monitoring season.

2024 Nearshore Human Health Sampling and Analysis Plan (E. coli)
12/11/2025
PDF
Sampling and Analysis Plan for 2024 sampling season

2025 Nearshore Human Health Sampling and Analysis Plan (E. coli)
12/11/2025
PDF
Sampling and Analysis Plan for 2025 monitoring season.

No indicators associated with this monitoring program.