Swaraj Residency Stinky and Toxic Recycled water

We are facing tremendous issue with the recycled water provided by builder Swaraj Residency @ Moshi.
Flush water in toilets is recycled one which is stinks and is toxic in nature which can cause harm to us and over loved ones.. Many complaints has been done in Society and to builder as this facility is still under Builder however he doesn’t care at all. Please provide immediate support.
Each resident of the society is suffering and is bothered