The Key to Keeping Lakes Clean and Healthy

Cyanobacteria Blooms can be Dangerous to Your Health

If you observe a cyano- bacteria bloom or scum:

• Avoid swimming or wading in the water. • Do not drink the water. • Keep pets and livestock out of the water. • Call NHDES at (603) 848-8094 or email

HAB@des.nh.gov to report the problem.

PHOTO COURTESY OF NHDES.

Generally, the water quality of New Hampshire lakes is very good. However, lake water should not be consumed unless it is specifically treated for such use. Neither in-home water treatment systems nor boiling the water will eliminate cyanobacteria toxins. When toxin-producing cyanobacteria blooms occur in surface waters in excessive amounts, the New Hampshire Department of Environmental Services (NHDES) may issue an advisory recommending that lake users avoid contact with the water in areas experiencing blooms.

The Key to Keeping Lakes Clean and Healthy

There are several actions each of us can take on our own property to help ensure a future of clean and healthy lakes in New Hampshire. Some of the most important actions we can take include keeping natural vegetation on the landscape, fixing areas where soil is being washed away, and helping runoff water soak into the ground. Together, the small actions that each of us take will make a big difference.