Nearly 40% of Philadelphia residents drink bottled water at home — many because they don’t believe tap water is safe to drink, or they don’t like the taste. But for those unable to frequently purchase cases of water, the need exists for more sustainable options while on the go.

Through civic hacking group Code for Philly, a team of local software developers set out to address that need with PHLASK, a free app that allows users to see what places in the Philadelphia area offer free water to public.

When PHLASK team member Billy Hanafee first started work on the project in the summer of 2017, his goal was not to build an app. His focus was more on finding a way to change how the public thinks about public resources like municipal water.

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