July 2025: Hazardous Waste Collection Event Scheduled for April 19 at Fairgrounds

July 2025: 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 2,059 applications last year, with an average processing time of 6 business days. Staff are available at the Louisville office Monday through Friday from 8:00 AM to 4:30 PM.

Water quality monitoring at 8 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.

What You Need to Know

Boulder County has partnered with the cities of Boulder, Longmont, Lafayette, and Louisville on this project. Combined investment across all jurisdictions totals $225,000, making it one of the largest collaborative efforts in the county’s history.

The Louisville Senior Center offers related programming including free legal consultations, tax preparation assistance, health screenings, and social activities. Over 3,846 seniors participated in center programs last year.

Next Steps

The Carolyn Holmberg Preserve open space property encompasses 1,555 acres and features 7 miles of multi-use trails. Seasonal wildlife closures may apply from December 15 through July 15 to protect nesting raptors and elk calving areas.

Safety data from the Louisville area shows 12 reported incidents in the past 12 months, a 8% change from the previous year. The Sheriff’s Office has increased patrols along SH-119 Diagonal Highway and added community outreach programs in response to resident feedback.