San Jose Officials Urge Increased Water Recycling Amid Microplastics Concerns

In a recent joint meeting held on August 19, 2025, the San Jose City Council and the Santa Clara Valley Water District Board addressed critical issues surrounding water recycling and the management of microplastics in local water supplies. The discussions highlighted the urgency of enhancing water recycling efforts and the need for effective regulatory measures to tackle emerging contaminants.

One of the primary topics was the growing concern over microplastics and nanoplastics in both source and treated water. Officials acknowledged that while treated drinking water is expected to be free of these contaminants, the reverse osmosis concentrate poses a challenge, particularly regarding its discharge into sensitive environments like the South San Francisco Bay. This highlights the need for comprehensive testing and management strategies to ensure water safety and environmental protection.

Director Eisenberg passionately advocated for increased water recycling, emphasizing that only a small fraction of available wastewater is currently being recycled. He pointed out that the potential for expanding recycled water usage is significant, suggesting that local wastewater could be utilized much more effectively. Eisenberg noted that while imported water is becoming increasingly contaminated, recycled water offers a more sustainable and local solution. He urged the city to facilitate contracts with wastewater providers and implement zoning requirements for new developments to incorporate recycled water systems.

Councilor O'Connor echoed these sentiments, expressing frustration over the slow progress in adopting purified water technologies that are already proven in other regions. He emphasized the importance of closing the loop on wastewater to reduce reliance on external water sources, which are subject to variability due to climate conditions. O'Connor also highlighted the interdependence between San Jose and the San Francisco Public Utilities Commission (SFPUC), advocating for collaborative efforts to enhance water supply resilience.

The meeting concluded with a consensus on the need for educational initiatives to inform the public about water recycling and its benefits. As the city moves forward, the discussions underscored a collective commitment to addressing water scarcity and environmental challenges through innovative solutions and community engagement. The next steps will involve further exploration of regulatory frameworks and practical implementations to expand the use of recycled water in San Jose.