[empath75]

They didn't add it to the water on purpose.

[sametmax]

I get that but I find strange that in 2017 in modern countries water quality should still be a debate. It should be in the "problem solved" category.

[greenshackle2]

It is a solved problem. A benign mistake happened at one sanitation plant. The city is working to resolve it. How does that make water quality a 'debate'?