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Look Out for Harmful Algal Blooms

The official beach monitoring season comes to an end after Labor Day weekend, but we do continue to receive and investigate reports of harmful algal blooms (HABs) throughout the fall. If you suspect a waterbody is experiencing a bloom, call or text the hotline at (603) 848-8094 or email HAB@des.nh.gov. Stay up-to-date on cyanobacteria advisories by checking our Beach Advisory Map.

Learn more about HABs

Upcoming Events

It's SepticSmart Week 9/20-24!

"Do Your Part, Be SepticSmart!" Each year we take part in EPA's SepticSmart Week with outreach activities to encourage homeowners and communities to care for and maintain their septic systems. Follow our social media all week for tips and information!