Where does most of Ohio's water come from?
Where does most of Ohio's water come from? More than half of Ohio's citizens get their drinking water from surface water sources. These include lakes, reservoirs, rivers and streams. Surface water is easier to obtain than ground water, but it is also more susceptible to contamination from nearby land uses.
Why is the Ohio River so polluted?
Pittsburgh's combined stormwater and sewer system overflows when it rains a lot, and that sewage seeps into the Ohio River, creating toxic algae blooms that are harmful to life in the river and to people.