How long will this last? If it's only going to take a couple days before it clears up you might consider skipping water changes for that time period and ensure you don't overfeed as long as you have stable biofiltration and your tank isn't overcrowded. If the water authority is monitoring it and can tell you it is safe for consumption, ask them for the analysis report so you can see what is in the water and compare it to a normal report. They will probably gladly give you the information if you ask.