Masks are mandatory for Perth and Peel in all indoor public venues from 6pm, 16 January 2022.
The mask mandate will not apply to the home, people with disabilities, people doing vigorous indoor exercise, or children in primary school or younger.
Anyone who has been in the Perth or Peel region from January 6 is also required to wear a mask in indoor public places when travelling to another regional area.
This follows three new cases of COVID-19 reported in WA. Two are local cases and one case is linked to interstate travel.
The two new local cases, a male and a female, have been identified as contacts of previously reported cases. Both cases have been linked to U Natural Spa Therapy in Applecross.
It is believed both cases were infectious in the community and contact tracers are working with these cases to determine potential exposure sites.
The Department of Health is working with the case to identify close and casual contacts, and potential exposure locations.
People are asked to regularly check the potential exposure sites list and if unwell get tested immediately and self-quarantine.
If you have visited an exposure site, you are required to follow the relevant health advice issued for that location.
The measures in place will be reviewed regularly and the Chief Health Officer will continue to monitor the serious situation and provide ongoing advice.
Translated materials are available to download to help businesses communicate the public health and social measures.