Adelita is at it again!

First it was the city’s 9-1-1 Center. Then it was the Fire Department. Now Evanston city communications staffer Adelita Hernandez is turning her twittering talents to the Water Department for a “Tap Water Tweet-along” this Saturday.

Hernandez will take her laptop to the city’s water treatment plant, at the eastern end of Lincoln Street, to give Evanstonians an inside look at where their drinking water comes from and what happens to it before it turns up in your cold-water tap at home.

She promises to answer such questions as how your drinking water gets from Lake Michigan to your tap, how the city ensures that you have a plentiful supply of safe drinking water at all hours of the day and night, and how much energy it takes to pump all that water from the lake to your home.

Adelita Hernandez at her first tweet-along at the city's 9-1-1 Center last November.

She will also teach Twitter followers about the history of Evanston’s water treatment plant, walk you through the entire water treatment process from start to finish, and watch one of Evanston’s high capacity filter basins in action.

You can follow along as she twitters from 9 a.m. to 11 a.m.

Instructions for tuning your computer into the tweet-along can be found on the city’s website.