The two units will be located at Cae Hafren, Llanidloes Rugby Club playing fields just off the A470, and The Miner’s Welfare car park, Ystradgynlais for residents in the Upper Swansea Valley.
Mobile testing is by appointment-only and provides a drive-through service.
The two units are part of a rolling programme of mobile testing to ensure residents have access to Covid-19 testing as close to home as possible.
Residents who have symptoms but are unable to attend a mobile testing unit can request a home testing kit.
A number of workplaces have contributed to a recent rise in outbreaks of Covid-19 where they have provided an opportunity for infection to spread, especially in settings where people work in close proximity to one another.
Testing teams are continuing to encourage people to visit their nearest testing unit if they become unwell with any of the signs and symptoms which are a high temperature, a new, continuous cough, a loss of, or change to, your sense of smell or taste.
Residents can also access two further national testing centres in Newtown and Brecon where you can walk, drive or cycle for a test, and an additional two community testing units in Builth Wells and Welshpool for drive-through appointments.
All testing units are available by appointment only for people with symptoms.
Appointments in Llanidloes, Ystradgynlais, Newtown and Brecon can be booked through the UK Government national booking portal, either online at gov.uk/get-coronavirus-test, by phone on 119, or 18001 119 for people with hearing or speech difficulties.
This is also the way to request a home testing kit.
Residents in and around Builth Wells and Welshpool can make an appointment at the community testing unit by calling 01874 612228 or by emailing firstname.lastname@example.org
For more information about Covid-19 testing in Powys, visit the health board’s website pthb.nhs.wales/coronavirus/coronavirus-testing