Driven by the need to address the changing environmental landscape

our clients call on us to define environmental and health connections and spearhead solutions. We analyze market conditions, regulatory actions, and legislative proposals to enable you to build successful projects and programs. Our sector expertise includes: environmental health, green building, indoor air quality, clean air, hazardous and solid waste, toxic substances, lead poisoning, and comparative risk. Founded as ERT Associates in 1992 by Ellen Tohn, we changed our name to Tohn Environmental Strategies in 2007.

We develop specifications and training to address indoor air quality and green building issues.
Government Agencies
We develop green/healthy housing initiatives and programs to address environmental health risks.
We help ensure your renovation or construction project creates a healthy green home.
Non Profit Organizations
We design initiatives, create advocacy campaigns, and provide strategic assistance.