All but one of the slow sand filters here are still working. All of the damage to the cistern has been repaired. Filter 1, which was started in 2007 and first tested in 2008 is still running. No tests have been possible on the filters because of the situation with covid19.
This year has been horrific world wide. We’ve been in quarantine for 3 months now. The covid19 virus has caused world wide chaos and loss of life. Compound that by race riots here in the U.S. . Keep in mind that slow sand filters do remove viruses from water. This has been shown time and time again.