The Groundwater Protection List refers to a list of pesticide active ingredients that could potentially impact groundwater due to their chemical characteristics and toxicological profile. Click here to search for registered products in Massachusetts


  • Acetochlor*
  • Acifluoren
  • Alachlor
  • Aldicarb
  • Atrazine
  • Bentazon
  • Bromacil
  • Cyanazine
  • Chlorthal-Dimethyl**
  • Dimethanamid
  • Diuron
  • Flufenacet
  • Fluthiacet-methyl
  • MCPA
  • Metolachlor
  • Metribuzin
  • PCP
  • Pronamide
  • Propazine
  • Simazine
  • Sulfentrazone


  • Aldicarb
  • Carbofuran
  • Dinotefuran
  • Disulfoton
  • Fenamiphos
  • Fonofos
  • Lindane
  • Methoxyfenozide
  • PCP
  • Propoxur
  • Terbufos
  • Thiamethoxam


  • Chlorothalonil
  • Cyflufenamid
  • Cyproconazole
  • Folpet
  • Fluopyram
  • Kresoxim-Methyl
  • Triticonazole
  • Sedaxane

* Acetochlor Products (such as Harness, Surpass, TopNotch, Trophy) can not be applied without a State Limited Use permit pdf format of Acetochlor Permit
approved by the Massachusetts Department of Agricultural Resources

** Chlorthal-dimethyl is more commonly known by its trade name: Dacthal

Pesticide Products which are aerosols, paints, baits, animals and human products and pool products are exempt from the regulations. All pesticide products which contain active ingredients on the Groundwater Protection List are Restricted Use Products.

Very Important
If you are using any of the pesticides on the Groundwater Protection List within a town that is listed on the Zone II List pdf format of wellhead_protection_list.pdf
, check to see if you are operating within a Zone II . New wells can be created and new Zone II areas delineated. 

Pesticide Products which are aerosols, paints, baits, animals and human products as well as pool products are exempt from the regulations

Recommended Content

People also viewed...

You recently viewed...

Personalization is OFF. Your personal browsing history at is not visible because your personalization is turned off. To view your history, turn your personalization on.

Learn more on our .

*Recommendations are based on site visitor traffic patterns and are not endorsements of that content.