25 January 2021
- 00:0500:05, 25 January 2021 diff hist +1 Earth Hour →Businesses and Organizations
- 00:0400:04, 25 January 2021 diff hist +50 Earth Hour →Businesses and Organizations
18 January 2021
- 18:2218:22, 18 January 2021 diff hist +71 Ceramic water filters →Notes and references Tag: Visual edit: Switched
12 October 2020
- 18:3818:38, 12 October 2020 diff hist −9,924 m UV water treatment Replaced content with "= UV Water Treatment = Project page for HSU Engr 308 Team: Karl, Nasley, Tyler <br> [http://www.epa.gov/ncer/sbir/success/pdf/innovative.pdf, http://www.water..." Tag: Replaced
- 18:3618:36, 12 October 2020 diff hist +38 User talk:Ensmkar →UV water purification treatment
- 18:3218:32, 12 October 2020 diff hist +39 UV water treatment Ultraviolet Sterilizers