May: Hazardous Waste Collection Event Scheduled for April 19 at Fairgrounds

May: Hazardous Waste Collection Event Scheduled for April 19 at Fairgrounds

Boulder County residents can safely dispose of household hazardous waste including paint, solvents, pesticides, batteries, and electronics at a free collection event on Saturday, April 19 at the Boulder County Fairgrounds. No appointment is necessary. Commercial waste is not accepted.

The Parks & Open Space processed over 11,599 applications last year, with an average processing time of 19 business days. Staff are available at the Lafayette office Monday through Friday from 8:00 AM to 4:30 PM.

Historical context: Boulder County was established in 1861 and covers 741 square miles of diverse terrain from the Great Plains to the Continental Divide. The county’s population of approximately 330,000 residents is served by 1995 county employees across 45 departments and offices.

Contact Information

Water quality monitoring at 17 stations along Boulder Creek, St. Vrain Creek, and Left Hand Creek showed all parameters within acceptable ranges for 2025. The Parks & Open Space publishes quarterly water quality reports on the Boulder County website.

The project includes improvements along SH-119 Diagonal Highway between Lafayette and the intersection with Arapahoe Road. Construction is scheduled to begin in September 2026 with completion expected within 14 months.

Resources

Boulder County has partnered with the cities of Boulder, Longmont, Lafayette, and Louisville on this project. Combined investment across all jurisdictions totals $266,000, making it one of the largest collaborative efforts in the county’s history.

The Coalton Trail open space property encompasses 933 acres and features 4 miles of multi-use trails. Seasonal wildlife closures may apply from December 15 through July 15 to protect nesting raptors and elk calving areas.