1981

• Western Washington Toxics Coalition founded ("Western" dropped in 1988).

1983

• WTC and citizen groups persuade city of Seattle not to use the toxic pesticide carbaryl to control gypsy moth.

1984

• U.S. District Court halts the spraying of herbicides on all land managed by the Bureau of Land Management (BLM) in response to legal challenge brought by WTC and other allies.

1985

• WTC's highly successful Home Safe Home project founded to provide consumers with information about alternatives to toxic chemicals and pesticides. Since then, WTC has distributed more than 150,000 copies of its 33 fact sheets.
• Whatcom and Snohomish counties pass policies to minimize the use of pesticides along roadsides at the urging of WTC.

1987

• Bainbridge Island School District passes tough pesticide use reduction policy as a result of WTC-led campaign.

1988

• WTC leads successful campaign to convince Seattle and King County to drop their plans to build polluting garbage incinerators.

1989

• Thurston County adopts tough pesticide use reduction policy.

1990

• Clallam County implements ban on roadside spraying of pesticides.

1992

• Governor vetoes bill that would have crippled water quality programs and limited the ability of local governments to regulate pesticide use at urging of WTC.
• WTC helps to launch the Master Home Environmentalist program to train volunteers to conduct health assessments of homes.

1993

• WTC leads campaign to defeat the construction of the Rabanco incinerator.

1994

• Toxics Hotline launched, providing the public with a toll-free number for information about the problems with chemicals and their safer substitutes. Since its inception, WTC has responded to more than 25,000 information requests.

1996

• WTC releases new report, "Poisons in the Web of Life," providing an overview of scientific studies examining the impacts of pollution on human health and wildlife.

1997

• WTC releases "Troubling Bubbles," a major new science report on the hazards of alkylphenol ethoxylate (APE) detergents in cleaning products.
• Huish Detergents, the largest maker of store-brand laundry detergents informs us they will remove APE from all of their products. Other manufacturers follow suit and APE will be prohibited in environmental product bid specifications by Green Seal, Cities of Seattle and San Francisco, State of Washington, and others.

1998

• WTC writes first edition of "Grow Smart, Grow Safe," a consumer guide to lawn and garden products destined to reach over 100,000 people in five editions.
• WTC succeeds in shutting down two medical incinerators.

1999

• WTC leads successful campaigns to convince Seattle and King County to announce tough new pesticide use reduction policies and assists in identifying pesticides for phaseout.

2000

• WTC and allies convince the Department of Ecology to establish the first statewide program in the nation to eliminate and clean-up persistent toxic chemicals (PBTs).

2001

• Legislature passes Children's Pesticide Right-to-Know Act to protect children from pesticide use in schools after a WTC-led campaign.

2002

• WTC wins passage of a first-in-the nation purchasing policy by the city of Seattle that commits them to purchasing products that do not contain or contribute PBTs into the environment.
• The Vancouver, Oak Harbor, and South Whidbey school districts, and the city of Lynnwood, all pass tough pesticide reduction policies.
• Washington State University establishes program to support organic and sustainable agriculture (Bio Ag Program) after years of urging by WTC and allies.

2003

• WTC leads successful campaign to pass a mercury reduction bill through the state legislature.
• WTC launches Pesticide Free Zone Campaign to publicize the beauty of gardens maintained without pesticides and to promote organic gardening.
• The cities of Bainbridge Island and Snohomish pass strong pesticide use reduction policies after campaign by WTC and local activists.

2004

• WTC wins a landmark legal victory to protect endangered salmon from toxic pesticides by establishing no-spray buffers along salmon streams.
• WTC and our allies convince Governor Gary Locke to issue an Executive Order on persistent toxic chemicals, instructing the state to develop a plan for eliminating toxic flame retardants called PBDEs.

2005

• The Seattle School Board unanimously adopts a cutting-edge pesticide use reduction policy after a nearly ten-year campaign led by WTC.
• The Washington State Department of Agriculture signs an agreement with WTC and allies to  increase protections for lakes from pesticide applications.
• WTC and our allies convince the Washington state legislature to provide $1.4 million in funding for the state program to eliminate persistent toxic chemicals (PBTs), the largest budget allocation in the history of the program.

2006

• The Olympia City Council adopts resolution to phase out their use of highly hazardous pesticides and to purchasing products that do not contain or contribute PBTs into the environment. as a result of a campaign led by WTC and activists in Olympia.
• A federal judge in Seattle overturned new Bush administration rules that made it easier for pesticide makers to ignore the effects of their products on endangered plants and animals. The ruling came in response to a lawsuit brought by Washington Toxics Coalition and other groups.