Massachusetts has over 3,000 lakes and ponds that provide opportunities for recreation and valuable habitat for a wide diversity of plants and animals.

The Lakes and Ponds Program works with local groups and municipalities to protect, manage and restore these valuable aquatic resources. We provide technical assistance to communities and citizen groups, help to monitor water quality at various public beaches to ensure public safety, and provide educational materials to the public about various lake issues.

The Program strives to ensure a safe future for Massachusetts' water bodies through a watershed approach and citizen education and involvement.

New aquatic herbicides have been registered in Massachusetts since the creation of the GEIR (2004).  These products should be considered approved for use in addition to those currently listed in the GEIR. Please visit the Massachusetts Department of Agriculture Resources to get the current list of registered aquatic herbicides for use in Massachusetts.

Aquatic Vegetation Management

Water Quality and Pesticides


Effective as of April 9th, 2013
This important new law makes it illegal in Massachusetts to introduce nuisance species to the state’s lakes and ponds, whether intentionally or unintentionally.  Please clean all visible plant material from your boat, trailer, and any recreational equipment before you leave a lake and then clean your equipment.  If not, you could face significant penalties under the law. 

The law can be found here:

302 CMR 18.00 Aquatic Nuisance Control Program  pdf format of 302 CMR 18.00 Aquatic Nuisance Control Program

Report violations to the Environmental Police at 1-800-632-8075 or to your local Harbormaster.