Reductions in nutrient pollution are already underway — but a real cure could cost up to $15 billion. Is it worth it?
e San Francisco Bay — 37 different sewage treatment plants — are cleaning up their act.
Thousands of dead fish, killed by an algae bloom, float around Lake Merritt in Oakland, Calif., on Wednesday, Aug. 31, 2022. About 14 of the Bay Area’s treatment plants have already modernized their facilities to clean up their chocolate-colored sludge, harnessing bacteria and aeration techniques to turn nitrogen from a liquid to a gas, then safely releasing it into the air. Several more have plannedupgrades, and are studying treatment wetlands.A thorough cleanup will be very pricy, boosting costs for ratepayers. To cut nitrogen releases in half, the total price tag could reach $11.
July’s red tide algae bloom faded without a repeat of last summer’s toll of thousands of dead fish and other marine creatures, according to an analysis by scientists atBut summer is not yet over. Increased algae concentrations in the 2000s, combined with these recent outbreaks, are causing authorities to take a harder look.
Nearly all of the nitrogen has been removed from wastewater before it is released into the sensitive southern San Francisco Bay at the San Jose-Santa Clara Regional Wastewater Facility in San Jose, Calif., on Wednesday, Aug. 16, 2023.
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