ZOMBIE SURVIVAL WATER FILTERS

Observer photo/Stuart Hedstrom

Students in Mary Kate Povak’s grade 7 science classes at SeDoMoCha Middle School in Dover-Foxcroft were tasked with engineering projects to create inexpensive, easy to make water filters. Povak set up a scenario of surviving the zombie apocalypse that resonated with her pupils as the seventh-graders needed to use materials found around the house, such as soda bottles, cotton balls and coffee filters, to create filters in 15 minutes that can then be used to purify enough water to meet the daily needs of one person.

The students checked the water — which for the experiment had food color included — that has gone through their filters, seeing if the pH levels and measurements of total dissolved solids fell within the safe parameters. Going through a test on their project are, from left, Angel Ray, Austin Gil and Arwen Morse, and the group also included Gabe Williams.