SANDY, Utah (KUTV) — The water is now safe to drink in Sandy, but the fallout over the lead contamination is only beginning. Residents have plenty of questions, and so do investigators.

The city council is expected to vote Tuesday to launch an investigation into the situation. Council chair Kris Nicholl said she hopes the public can help shape the scope. Central to her are the basics — who, what, when, where, why and how.

The investigation could be led by a combination of council members, residents and professionals, Nicholl said.

Marie Owens, who leads the Department of Environmental Quality’s Division of Drinking Water, said she’s “never seen a potential contamination event at this magnitude” in Utah in her 25 years in the water industry.