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Polybutylene Service and Valve Replacements

CI 5688 & CI 5689

The project includes the replacement of aging water distribution valves, saddles, water meter boxes, and service lines, including implementation of traffic control measures, and all associated work necessary to complete the project.

Polybutylene was the standard material used for water service lines installed in the 1970’s. However, due to frequent leakage/breakage caused by age and the material used, these Polybutylene service lines are being replaced with new copper lines as part of an ongoing citywide program.

These valves are over 35 years old; most cannot be fully opened or closed, and in some cases are not operable at all. Replacing these valves will improve the operation of the water system and promote reliability in the event of an emergency repair.


Impacted neighborhoods

Valve Replacements:

Neighborhood bordered by Avenida de los Arboles and Moorpark Road, including Calle Castaño, Calle Fresno, Calle Quebracho, Calle Cedro, Calle La Maida, Calle Lacota, and Calle Arino (Refer to Location Maps).


Poly Service Replacements:

Neighborhood bordered by Olsen Road, Pederson Road, and Northwood Parkway, including Altuna Ct., Birdsong Ave., Chatham Ct., Clarendon Pl., Flying Hills Ln., Larkhaven Ct., Northwood Pkwy., Panorama Ct., Trailview Ct., and Zenith Ave. (Refer to Location Maps).

Timeline and Funding

This project will take place from April 2026 through September 2026.


A construction contract has been awarded to J. Vega Engineering, Inc. from Camarillo, CA, in the amount of $1,396,650.


The project is funded through the Water Fund Capital Budget.


Project Impacts

  1. Streets will have partial lane closures, and some may have full closures accessible only to residents; non-residents in the area will be detoured to their destinations.
  2. Expect delays, especially on Avenida de los Aboles at Moorpark Road. The public—including pedestrians, motorists, and cyclists—is encouraged to avoid the construction zone and use other alternative streets to their destinations during the traffic control hours.
  3. Some residents will experience a water shutdown from 9:00 a.m. to 4:00 p.m. on multiple days. Advanced water shutdown notification will be provided to impacted residents.
  4. “No Parking Signs” will be posted 72 hrs. in advance of the work.