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Friday August 4, 2023

KQED

Californians could drink highly purified sewage water that is piped directly into drinking water supplies for the first time under proposed rules unveiled by state water officials.

The drought-prone state has turned to recycled water for more than 60 years to bolster its scarce supplies, but the current regulations require it to first make a pit stop in a reservoir or an aquifer before it can flow to taps.

The new rules, mandated by state law, would require extensive treatment and monitoring before wastewater can be piped to taps or mingled with raw water upstream of a drinking water treatment plant.

“Toilet-to-tap” this is not.

Between flush and faucet, a slew of steps are designed to remove chemicals and pathogens that remain in sewage after it has already undergone traditional primary, secondary and sometimes tertiary treatment.

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