Tuesday, August 18, 2026

Altadena Reservoir Damaged in Eaton Fire Returns to Full Service

CITY NEWS SERVICE

A 4.1-million-gallon reservoir in Altadena that was damaged during the Eaton Fire has been repaired and returned to full service, Pasadena officials announced Monday.

The Allen Reservoir, a concrete-lined, partially buried storage facility built in the 1930s, was restored to full functionality following repairs to structural components damaged during the fire, according to Pasadena Water and Power.

The utility kept half of the reservoir operating while repairs were underway to maintain water service.

Crews replaced structural members and rebuilt portions of the reservoir’s interior catwalk and handrail. Aging drain valves were also replaced.

Following construction, the reservoir was cleaned and disinfected before being returned to full service, officials said.

PWP operates 14 reservoirs across its service area and is the largest water provider in Altadena. The utility serves more than 165,000 residents across a 26-square-mile service area.

The Allen Reservoir restoration was among several water infrastructure projects highlighted Monday by the city.

“Continued investment in our water infrastructure is important to reliable, high-quality water service, and we appreciate the community’s patience and partnership during the construction work,” PWP General Manager David Reyes said.

The utility also completed several water main replacement projects this year, including work on Fair Oaks Avenue, Oak Knoll Avenue, Holly Street, Villa Street and Grand Avenue.

PWP said additional water main replacement projects are planned or underway on portions of Villa Street, Colorado Boulevard and Wallis Street.