Question

multiple - choice question
what caused the water contamination in flint, michigan?
failing to do needed maintenance on the towns drinking water treatment plant
installing new underground lead pipes in the towns water lines
switching the source of the towns drinking water from the cleaner lake to the more acidic river because it was cheaper.
rewatch

Explanation:

The water contamination in Flint, Michigan was mainly due to switching the water source from a cleaner lake to a more acidic river to save money. The acidic water corroded the lead - lined pipes, leaching lead into the water supply. Maintenance issues also contributed but the main cause was the water - source change. There were no new lead pipes installed; rather, existing lead - lined pipes were affected by the new water source.

Answer:

Switching the source of the town's drinking water from the cleaner lake to the more acidic river because it was cheaper.