The watershed around East Palestine conveys water through various small streams and rivers into the Ohio River over 30 river miles downstream from our intakes on the Allegheny River. As the source of potential water contamination is far downstream from our intakes, there is no direct water quality impact from the East Palestine train derailment to our water supply on the Allegheny River.
You can learn more about the current level of safety of Pennsylvania's waterways following this event at https://www.dep.pa.gov/About/Regional/SouthwestRegion/Community%20Information/Pages/Ohio-Train-Derailment.aspx
The Allegheny and the Monongahela rivers meet at the Point in Downtown Pittsburgh to form the Ohio River. Downtown Pittsburgh is the headwaters of the Ohio River, so all water from this river flows away from Pittsburgh.