Hazardous Chemical Waste Disposal

Know the procedures for handling and disposing of hazardous chemical waste.

EH&S is responsible for the collection of hazardous waste for the University, including all campuses and off-site locations. Hazardous chemical waste is defined as any liquid, gaseous, or solid chemical that is ignitable, corrosive, reactive, toxic, or persistent, and is no longer useful or wanted. According to Administrative Policy Statement 11.2, organizational units and departments cannot contract with an outside vendor to collect hazardous waste.

What you need to know


For further information please contact us using the table below:



Phone number


UW Bothell, UW Tacoma, "off-site locations"



UW Seattle main campus from Benjamin Hall in the west, the UW Tower in the north and Urban Horticulture in the east (less Zone 4 buildings)



UW Medical Center through D wing, including T wing and CHDD



UW Seattle Health Sciences Building E wing through K wing, Hitchcock Hall, Foege, OCN, all south campus waterfront buildings east of 15th except CHDD



Buildings that fall with the perimeter of NE Pacific St, 15th Ave, Grant Pl and Garfield including, but not limited to, Bagley, Molecular Engineering, Botany Greenhouse, and Physics/Astronomy complex



Harborview Medical Center Complex


Frequently Asked Questions (FAQ)

Yes, unless the material is still in its original manufactured container. All other containers used to accumulate hazardous waste or universal waste must have a completed label. Containers need to be labeled as soon as waste begins to be accumulated in them.

A correctly completed label is shown below.

hazardous waste label (22K)


Free labels are available at several locations on campus. These labels come in a booklets of 20 and are self-adhesive.

Biochemistry Stores
J014 Health Sciences Building
Monday - Friday
8:15-12:00, 1:00-4:45
Last day of the month
8:15-12:00, 1:00-3:30

Chemistry Department Research Stockroom
036 Bagley Hall
Monday - Friday
8:30-12:00, 1:00-4:30
Closed on UW employee holidays

You can also Contact Environmental Programs at 206.616.5835 if you would like us to send you some of these labels via campus mail.

You may also print out your own labels. You can either print and fill out or fill out and then print. We have two formats available:

Before they become “waste-like.” "Waste-like" chemicals are items with faded labels, deteriorating containers, leaks and/or other obvious signs that the chemicals are not being used. Waste-like chemicals are not likely to be used in the future.

You can request collection of "waste-like" chemicals as hazardous waste. Regulatory staff conduct periodic inspections of laboratories and may assess fines for the presence of "waste-like" chemicals. These chemicals present an unreasonable risk of spills and exposures.


Legacy chemicals are unwanted chemicals left behind by a previous occupant of your laboratory space. Occupants moving out of a space have the responsibility of cleaning out the space, but unfortunately this doesn't always happen. You can request collection of legacy chemicals as hazardous waste. There is no charge for waste collection except for unknowns and unstable peroxide formers. See the EH&S Guidelines for Peroxide Forming Chemicals for more information.

If contents of the chemical container you want to get rid of are unknown to you, you can still request its disposal using our online system. Just list it as an “unknown.” We charge $75 per container to cover some of the cost of handling and disposing of these chemicals. Please include a budget name and number in the notes section of the collection request form.

If we can get enough knowledge about the generator, we may not have to charge for this waste. With that in mind, we will contact you requesting as much information as possible. We may ask you such things as what you think it might be, where the container was found, what kind of work the lab did; we may also ask you to take a picture and send it to us.


If you are relocating or cleaning out your workplace and have a large volume of chemical waste, here are some guidelines.

  • If you will have more than 100 containers of waste, call 206.616.5835 to arrange for a cleanout appointment at least one month in advance of your move.

  • Select the unwanted chemicals in your MyChem inventory and click on "Waste Collection" for easy disposal.

Any waste not in its original container must have a completed UW Hazardous Waste label. We will pick up the waste in two to four weeks after you request collection.

Finally, remember to update your chemical inventory with MyChem.


EH&S Environmental Programs

(206) 616-5835