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Boulder County
Resource Conservation
1901 63rd Street
Boulder, CO 80301
tel (720) 564-2220
fax (720) 564-2227

Household Hazardous Waste (HHW)

Hours: Wednesdays 8 am - 3:30 pm, and Fridays and Saturdays 8 am - 12 noon. CLOSURES: for safety reasons, the facility located at 5880 Butte Mill Rd (see map) will close for temperatures above 98 degrees or below 32 degrees; rain or snow; high winds; and lightening storms. It is also closed for public holidays. Call the HHW Hotline at 303.441.4800 to check for closures.

Common Questions:

Don't throw it away!
Many products used in the home, garden, garage and hobby shop contain hazardous ingredients and need to be disposed of safely!

 

What is Household Hazardous Waste?
Many products used in the home, garden, garage and hobby shop are hazardous wastes such as poison, combustible, flammable or corrosive. When you decide to discard these products they become household hazardous wastes requiring proper disposal. List of acceptable wastes. List of wastes NOT accepted.
Why do I need to dispose of my household hazardous wastes differently from other trash?

Most people think of "hazardous wastes" as wastes generated by industry, but many household products contain the same chemicals found in industrial hazardous wastes. Improper disposal of household hazardous wastes, such as throwing them away with your household trash, dumping them in storm drains, or into sewer or septic systems, can endanger your health, the health of others and the environment.

There are many reasons it makes sense to collect hazardous household wastes separately and keep them out of landfills. Some household hazardous wastes shouldn't be landfilled because they can be recycled or used as an energy saving fuel. Less hazardous waste in the landfill means less hazardous leachate requiring expensive treatment. The risk of ground and water pollution should leachate leak from landfills is also reduced. Garbage collectors and landfill workers can be injured by exploding aerosol cans, splashing chemicals or poisonous fumes created by mixed chemicals. Chemical reactions can also cause fires in garbage collection trucks.

Household hazardous wastes should never be poured onto the ground or down storm drains. Products such as motor oil contain toxic chemicals and metals (hydrocarbons, lead, zinc, arsenic, chromium and cadmium) that will contaminate groundwater, drinking water and freshwater wildlife habitats. Other products may also have an adverse effect on water supplies and the environment.

Household hazardous wastes should never be flushed into septic systems or down sewer drains because these wastes can kill the active bacteria either in your septic tank or at the waste water treatment facility. Waste water treatment facilities cannot remove all heavy metals and these may contaminate sewage sludge, water supplies and animal habitats.
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How do I know if a product is hazardous?

All hazardous products exhibit at least one of the following properties: Toxic: even in small quantities may immediately poison, or cause injury or death through repeated exposure, when inhaled into the lungs, eaten, swallowed, or absorbed through the skin (e.g. rat poison, pesticides, bleach). Flammable: usually liquids that easily ignite and burn (e.g. lighter fluid, spot and paint removers). Corrosive: substances or vapors that can burn skin on contact and can eat away the surface of other materials (e.g. oven and toilet bowl cleaners). Reactive: substances that react with air, water or another substance to produce toxic vapors or explode (e.g. bleach when mixed with ammonia-based cleaners). Check the label. Look for the following warning words: POISON, TOXIC, CORROSIVE, VOLATILE, FLAMMABLE, INFLAMMABLE, COMBUSTIBLE, EXPLOSIVE, DANGER, CAUTION, WARNING or HARMFUL. These words will alert you to the nature of the product.
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How can I use & store hazardous products properly?

Follow the directions on the label. Ask the dealer or manufacturer to provide more explanation if needed. Don't use more of the product than is recommended. Never mix products; this can lead to explosions or poisonous gas being released. Use hazardous products in well-ventilated areas and always use gloves, eye protection and air purifying respirators whenever warranted. Never eat, drink or smoke where hazardous products are being used. Keep products in their original containers. If you do have to use a different container be sure to label adequately in case of poisoning and for safe use and disposal. Store all hazardous products upright, tightly sealed, and away from pets, children and food.

What is the cost to drop-off waste? 

The program serves Boulder and Broomfield County residents only. Business wastes are not accepted. There is no charge to residents. Funded by Boulder and Broomfield Counties, the cities of Boulder, Lafayette, Longmont and Louisville, and the towns of Erie and Superior. Each city pays for the participation of its residents and the County pays for participation by small town and unincorporated area residents.
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Does my community offer HHW collection events that I could use instead of the facility?

Broomfield, Lafayette, Longmont, Louisville, and Superior hold annual or periodic HHW collection events for their residents. Please call your local town/city hall for details.

Are FREE products available for reuse?

Products include: cleaning, automotive, hobby, paints, stains & varnishes, garden, woodworking supplies, wood sealants, etc. Household hazardous wastes are accepted from county residents for proper disposal or recycling. Many products are in usable condition and some have never been opened. Suitable products are made available to individuals, businesses, and county and city departments for reuse, free of charge, on a first-come, first-served basis. All persons accepting products will be asked to sign a liability and indemnification release.

Free product give-away during open hours: Wednesdays - 8am - 3:30pm; Fridays & Saturdays - 8am to 12 Noon

How can I transport hazardous waste safely?
  • NEVER MIX DIFFERENT CHEMICALS! Toxic fumes or an explosion can result and it prevents recycling of the materials.
  • Leave waste products in their original containers, and make sure caps and/or lids are securely closed. Gasoline is highly flammable and should only be transported in purpose-designed gasoline cans or containers. Do not transport hazardous wastes in the same part of your vehicle as children or pets.
  • If the original container is leaking or damaged, place the entire container in a larger container such as a clean paint can, plastic bucket, or wrap securely with plastic. If you wrap up a container so that the original label cannot be seen, mark the contents to the best of your ability, and be sure to tell the collection staff what the contents are.
  • Separate different types of waste, such as paints, motor oil, batteries, pesticides, acids, etc. Place containers upright in sturdy cardboard boxes or plastic trays, and pad with newspaper. You may also want to line your car with plastic before you pack the car.
  • Put containers in trunk or rear of your car, not on passenger seats. Come straight to the Household Hazardous Waste facility to avoid any problems with the waste.
  • Don't eat, drink or smoke while handling household hazardous wastes. Wash your hands after handling these materials.
  • Never put HHW into trash bags or trash cans, lids can come off causing chemicals to mix and possibly creating dangerous reactions.
  • No containers (containing liquid) in excess of 5 gallons will be accepted.
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What can I do to reduce my use of hazardous products?

Choose safer alternatives whenever possible, for example, choose water-based products over solvent-based ones. Avoid aerosols. Avoid products containing chlorinated compounds, petroleum distillates, phenols and formaldehyde. Avoid chemical air fresheners. Buy only what you need so you aren't left with hazardous waste. Give left over products to a responsible neighbor or friend who can use it up. Plant pest- and disease-resistant species of plants. Reassess your tolerance of pests and if you must kill them, learn how to target them more effectively.

Never use banned or restricted pesticides or products. The Environmental Protection Agency (EPA’s) web site lists banned or restricted pesticides and products including but not limited to:

  • aldrin

  • asbestos (all forms)

  • benzene hexachloride (BHC)

  • cadmium compounds

  • calcium arsenate

  • carbon tetrachloride

  • chlordane

  • diazinon

  • dibromochloropropane (DBCP)

  • DDT

  • dieldrin

  • dinoseb

  • endrin

  • heptachlor

  • hexachlorobenzene (HCB)

  • lead arsenate

  • mirex

  • phenylmercury acetate (PMA)

  • phenyl- mercuric oleate (PMO)

  • silvex

  • sodium arsenite

  • sodium arsenate

  • strychnine

  • sulfuric acid

  • 2,4,5- trichloro-phenoxyacetic (245-T)

  • vinyl chloride

  • For more information contact EPA Region 8 at 303.312.6149, or Colorado Department of Public Health and Environment at 303.693.3300.
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