What does the ontario clean water agency do? The Ontario Clean Water Agency operates, maintains and manages water and wastewater facilities and their associated distribution systems throughout the province. The Agency also provides a range of engineering, advisory, technical and training services. Its clients include Ontario municipalities, industry and First Nation Communities.Who do i call for water or sewer problems in wiarton? The Town provides municipal water and sanitary sewer service to over 1,500 properties in our municipality. If you have an after-hours emergency for water or sewer in Wiarton, please call Ontario Clean Water Agency at 519-372-3034.How do i contact omwa? Memberships, and to advertise your upcoming/current career opportunities, to join OMWA or general inquiries: [email protected] Media inquiries and website issues: [email protected] Questions?Who makes up ocwas board of directors? Members of OCWA's Board of Directors are appointed by the Lieutenant-Governor-in-Council. OCWA's Board is made up of qualified independent members and senior executives employed with the Ontario government.