STORM Coalition
- Coalition of 25 citizens' groups and individuals concerned about preserving the ecological integrity of the Oak Ridges Moraine. Includes news releases, photos, background information, related events and membership information.
- http://www.stormcoalition.org/

Ontario Clean Air Alliance
- A coalition of health, environmental and consumer organizations utilities, municipalities and individuals working for cleaner air through strict emission limits and a phase-out of coal in the electricity sector.
- http://www.cleanair.web.ca/

Ontario Centre for Environmental Technology Advancement (OCETA)
- A private sector, not-for-profit corporation that offers business services to small to medium sized enterprises to help them commercialize new environmental technologies and to support sustainable economic development.
- http://www.oceta.on.ca/

Centre of Excellence for Earth and Environmental Technologies
- Conducts research and development to drive commercially viable outcomes contributing to clean air, water, land, and smart infrastructures in Ontario.
- http://www.oce-ontario.org/default.aspx?m=COEEarth&COE=EA

Ontario Nature - Federation of Ontario Naturalists
- Protects and restores natural habitats through research, education and conservation. Includes aims and overviews, a shopping page, projects and advocacy, membership information, and an events listing.
- http://www.ontarionature.org/

Point Clark Beach Association
- Information and links about environmental issues affecting the water and beach quality of Lake Huron at Point Clark, Ontario.
- http://www.pcba.ca/

The Green Pages
- Provides extensive information about the environment, conservation, education and includes free e-mail.
- http://www.thegreenpages.ca/

Ecotecture Canada
- A registered charity dedicated to public education to further the goals of environmental, social, economic and cultural sustainability. Includes information about its projects and newsletters.
- http://www.ecotecturecanada.org/

Ontario Sustainable Energy Association (OSEA)
- An organization formed to implement community sustainable energy projects across Ontario.
- http://www.ontario-sea.org

Ontario Environment Industry Association
- Private sector, not-for-profit association dedicated to promoting the economic health of environment business, thereby strengthening its domestic and international competitiveness.
- http://www.oneia.ca/

Ontario Horticultural Association
- Provides information, organization and networks for Ontario gardeners. The OHA publishes a quarterly newsletter and conducts an annual convention, promotes youth participation and the furtherance of horticulture and community interests.
- http://www.gardenontario.org/

Ontario Professional Foresters Association
- Governs the standards of practice of forestry in the province, and lists information about legislation, policies and guidelines, membership, news and a classified advertising section.
- http://www.opfa.ca/

Oak Ridges Moraine Foundation
- The ORMF provides funding to protect the Oak Ridges Moraine, an ecosystem that stretches across Central Ontario. Provides maps of the Moraine and a vision for its future.
- http://www.ormf.com/

Ontario Steelheaders
- A non-profit organization of volunteers in partnership with government and other agencies to improve access and habitat for migratory rainbow trout in southern Ontario.
- http://www.ontariosteelheaders.ca/

Positive Power
- Advocates developing community-based wind power and sustainable/renewable energy in the Halton, Haldimand, and Hamilton areas. Lists press releases and links to related and educational sites.
- http://www.positivepowerco-op.com/

Quetico Foundation
- Dedicated to the preservation of wilderness areas, particularly of Quetico Park.
- http://www.queticofoundation.org

Water Environment Association of Ontario
- A not for profit organization of over 1200 technical and professional individuals dedicated to the preservation and enhancement of Ontarios water environment
- http://www.weao.org/

Severn Sound Environmental Association
- Information about projects and programs to improve water quality and restore wildlife habitat in the Severn Sound area.
- http://www.severnsound.ca/

The Ontario Environment Network
- Non-profit, non-governmental network of over 500 environmental groups that focus on a wide range of environmental issues.
- http://www.oen.ca/

FrogWatch Ontario
- Seeks volunteers to listen for frog and toad calls in their local wetlands as part of a project to monitor amphibian populations.
- http://www.naturewatch.ca/english/frogwatch/on/

The Tadpole Monitoring Project
- An M.Sc. research project that seeks to involve in the public in monitoring ponds and wetlands in Ontario to obtain information regarding catastrophic amphibian tadpole die-offs.
- http://www.trentu.ca/biology/tadpole

Ontario Science Centre
- Information about the Youth Section of the OSC.
- http://www.ontariosciencecentre.ca/

Air Quality Ontario
- Provides smog alerts, air quality forecasts and suggestions to reduce pollution for Ontarians.
- http://www.airqualityontario.com/

Dufferin County Forest
- Information about this forest located about 1.5 hours drive northwest of Toronto.
- http://www.dufferinmuseum.com/forest/

Green Ontario
- A guide to the environmental scene in Ontario, including factsheets on environmental issues and directories of organizations.
- http://www.greenontario.org/

RCO - Recycling Council of Ontario
- Provides extensive information concerning recycling and waste minimization programs in the province of Ontario. Includes related links.
- http://www.rco.on.ca/

Waterfalls of Southern Ontario
- An ongoing project to build detailed database of falls listing a page about each and providing photos, physical and cultural information with directions.
- http://www.multiboard.com/~mharris/waterfall.htm

Ontario Streams
- Raises public awareness in volunteer stream and watershed projects.
- http://www.ontariostreams.on.ca/

Waterfront Trail
- Describes the 740 km trail stretching along the shore of Lake Ontario and the ongoing effort towards a regenerated waterfront. Includes project information, maps, articles, and contact details.
- http://www.waterfronttrail.org/

AMRC - Association of Municipal Recyclers
- Recycling tips, members' public pages, section for members only, executive organization, notices of education, workshops and information sessions news and reports.
- http://www.amrc.guelph.org/

The Southern Ontario Seismic Network
- Seven permanent seismic stations and four remote dialup seismic stations located mainly in the Toronto, Hamilton, Niagara peninsula area of Southern Ontario.
- http://www.gp.uwo.ca/