WARREN, Mich. (WXYZ) — Mayor Jim Fouts notified residents Monday that city drains were clear of contamination after "green ooze" was found seeping onto I-696.

RELATED: Toxic ooze along I-696 in Madison Heights raises concerns about drinking water

Industrial Pre-Treatment Program (IPP) inspectors evaluated Warren city drains and found there was no hexavalent chromium from the Madison Heights spill present. The dangerous chemical was found spilling over onto the I-696 freeway in Madison Heights earlier in December. The source of the ooze, which can cause cancer, is a now-closed factory. The owner of Electro Plating Services in Madison Heights allegedly dug a pit and improperly stored 37,000 gallons of hexavalent chromium, according to the Department of Justice.

The chemical then migrated through groundwater from the plant, the EPA says.

RELATED: Yellow ooze leaking onto I-696 identified as chemical featured in 'Erin Brockovich'

Inspections in Warren, a nearby city to Madison Heights, has provided some relief to residents.

The IPP inspections were headed by Ted Landway, Mayor Fouts said in a press release. The tests showed that all storm drains connected to I-696 showed no pollution from the spill. Additionally, four local businesses that use the chemical hexavalant have also been closely monitored.

Hexavalent is used for chrome plating of vehicles. Fouts points out that many industries are actually switching to fake paint instead, and urges the state of Michigan mandate the same and discontinue the use of the dangerous chemical within the industry.

RELATED: Hazardous green ooze found seeping onto I-696 originated from Madison Heights factory

Fouts adds that the city of Warren is one of the first cities to have an Industrial Pre-Treatment Program (IPP).