East County officials fear a $950 million sewage recycling project could get flushed down the drain because of a pipeline deal gone awry.

Leaders spearheading the endeavor blame San Diego Mayor Todd Gloria — who signed off on building an eight-mile “brine line” as recently as last year but has since reneged on that commitment.

The pipeline would prevent concentrated waste generated by the East County project’s reverse osmosis filtration system from entering into the city’s own $5 billion Pure Water sewage recycling project now under construction. Instead the byproduct would be routed into the city’s larger wastewater system.