Clear Lake: Current cyanotoxin results from sampling conducted on August 6, 2025

[WB Staff]

Current cyanotoxin results from sampling conducted on August 6, 2025. We currently have the highest toxin levels on the lake so far this summer at 1,376.5 μg/L. Safe contact recreating is below 0.8 µg/L.
Please click on map link below for results or go to https://www.bvrancheria.com/clearlakecyanotoxins
Highest microcystin cyanotoxin level is at Sulphur Bank Mercury Mine (site SBMMEL01): the result value is 1376.5 μg/L (DANGER LEVEL) Safe recreating is below 0.8 µg/L/
3 sites with Danger levels of microcystin cyanotoxins(red markers on map): SBMMEL01, ELEM01, KEYS03.
1 site with Warning levels of microcystin cyanotoxins (orange markers on map): LC01.
8 sites with Caution levels of microcystin cyanotoxins (yellow markers on map): AP01, BP, CLOAKS01, CP, HB, JB, RED01, SHADY01.
7 sites are below Caution levels of toxins and there are no recommendations for restrictions on activities (green markers on map): BVCL6, CLV7, GH, KP01, LPTNT, LUC01, RODS.
Recommended Restrictions on Activities:
SITES with DANGER levels: no boating in area
SITES with WARNING levels: no swimming in area
SITES with CAUTION levels: stay away from scum, do not let pets drink the water or eat scum on the shore.
If you or your pet become ill shortly after being in ANY body of water, notify your physician or vet. Physicians and veterinarians should be reporting suspected cyanotoxin illness to https://mywaterquality.ca.gov/habs/do/bloomreport.html
**How can I report a HAB-related illness?
Please report any suspected HAB or potential HAB-related illness by any of these methods:
1. Fill out the form on this page: https://mywaterquality.ca.gov/habs/do/bloomreport.html including the illness information section
2. Call (844) 729-6466 (toll free)
3. Email CyanoHAB.Reports@waterboards.ca.gov
Next sampling event is August 19, 2025 1661

[birdman920]

Clear Lake is a toxic waste land! do not come if you value your health!