“Snyder says water utilities could make drinking water purer. But the costs of “extreme purification” – far beyond what is needed for safety alone – are huge in terms of increased energy usage and carbon footprint. Ultra-pure water might not even be safe, adds Snyder.”
This is a copout. Ultra-pure water is not safe to drink, but our water doesn’t need to be ultra-pure, it just needs to be free of drugs!