Water World COVID-19 testing site to hold last day of testing March 24 Copyright 2021 Scripps Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. Denver7 Colorado Gov. Jared Polis undergoes a COVID-19 test at the Water World site in Federal Heights on Monday, Aug. 10, 2020. and last updated 2021-03-16 17:11:00-04 DENVER â The COVID-19 testing site at Water World in Federal Heights will hold its last day of testing next Wednesday, March 24, after six months of operations, Adams County said Tuesday. The site at Water World was one of the largest stood up in the state as the Pepsi Center site in Denver closed and the state started to put up more community-based testing sites across Colorado.