DSO Information

DSO South East Region

Welcome to DSO South East Region, serving Hastings, Kingston, Lanark, Leeds & Grenville, Lennox & Addington, and Prince Edward County.

We can provide you with information about community services and resources, and assist you in connecting with MCSS-funded developmental services and supports.

DSO South East Region


1-855-237-6737 or

Click here for instructions on how to contact your local DSO via TTY.

What's Happening

For more information on our agency’s services and supports, please go to our agency website at: www.dsoser.com.

On July 4, 2011, Developmental Services Ontario South East Region will formally begin serving adults with developmental disabilities in our region.

Stay tuned for further information and updates on Developmental Services Ontario!