The chemical spill forced a temporary closure of several beaches and Indiana American Water's intake in Ogden Dunes.
The NAACP and East Chicago residents are calling on the EPA for more resources as Administrator Scott Pruitt visits the lead-contaminated neighborhood.
Officials say two dozen families remain at the 45-year-old East Chicago housing complex.
The EPA sampling results showed no significant trace of the chemical in the lake or Burns Waterway after the Tuesday spill at U.S. Steel's Portage plant.
Many asked about the remediation process, but some expressed concerns over the EPA's commitment to residents in the lead-contaminated Superfund.
Indiana Gov. Eric Holcomb says the state is working on finding funding for water filters in East Chicago homes dealing with lead contamination.
The same group who requested federal assistance for Flint, Michigan, is now stepping in for East Chicago, Indiana.
Waters of the U.S. dictates which waterways are subject to federal clean water regulations.
Gov. Eric Holcomb visited East Chicago, Indiana, a week after declaring an emergency in the city due to lead and arsenic contamination.
In addition to aid for a lead contaminated neighborhood, East Chicago city officials seek guidance from the state to address lead found in drinking water.