You will be fine. 100,000 gallons of water move through the Delaware every second. The spill was 8,000 gallons. The concern was that the spill, while small in comparison to the river, could be in high enough concentration that some water could enter a treatment plan a few miles downstream of where the spill was. I am not a hydrologist or something, but I'd bet money on the river washing any final traces of the spill away from the area near the intake valves (which they are constantly monitoring with extra diligence and testing because of the spill - and they haven't had cause for concern yet) .

Honestly the story here is how the city officials fucked things up and got everybody panicked and told them to buy bottled water, than retracted that statement 2 hours later. Ever since then, they've said consistently that the water is safe. But by then the fear had spread and people were scared the government was telling the truth or not, if they heard the new news at all. Tbh, I think somebody jumped the gun on sending out the warning.