Water Main Incident Near Cuesta Park – 4/26/26 Update #2

8:45 p.m. Sunday, April 26, 2026 Update: The households affected by Friday's water main incident near Cuesta Park should be prepared for being without tap water for drinking, cooking, hand washing, bathing, and other domestic uses through mid-to-end of the week. As of Sunday night, nearly all of the homes now have their water turned back on for toilet flushing only.

The extended timeline for restoring safe drinking water is due to two of the five water samples coming back positive for bacteria. The crews are resuming flushing activities with the intent to rid the isolated system of the bacteria. On Sunday night and Monday morning, the City of Mountain View water utility crews will follow State Water Resources Control Board's instructions to conduct additional comprehensive drinking water safety testing.

Following all standard protocols, the City is closely coordinating with the State regulators to ensure safe water service is restored as quickly as possible.

Please see the updated map below of the affected area, which has been revised to show 65 affected homes total. Two homes, located on Leona Lane, have been removed due to those homes receiving water from a non-impacted water main.

For assistance, affected residents can call 650-903-6081 or email [email protected].

Temporary Lodging Available for Impacted Residents

The City has partnered with four local hotels to provide temporary lodging for residents impacted by the recent incident.

If you desire to stay in a hotel during the impact period, you may stay at one of the following locations:

• Super 8 Mountain View, 1665 W El Camino Real, Mountain View, CA Phone: 650-969-9641
• Ramada by Wyndham Mountain View, 55 Fairchild Dr, Mountain View, CA Phone: 650-967-6856
• Days Inn Mountain View, 850 Leong Dr, Mountain View, CA Phone: 408-915-3669
• The Ameswell Hotel, (pet-friendly-extra fee) 800 Moffett Blvd, Mountain View, CA Phone: 650-880-1000

What you need to bring:

• A valid government-issued photo ID
• The ID must show an address that matches the impacted residence
• A credit card for incidental charges

Important Notes:

• Hotel accommodations are available for eligible residents only.
• Availability may vary by location.
• Please inform the front desk that you are part of the City's temporary lodging program when checking in.

Questions or Assistance:
If you have any questions, please call 650-903-6081 and press 2.

About the Water Main Incident

The water main incident, near the intersection of Bonita Avenue and Cuesta Drive, involved a City contractor working on a water main replacement and upgrades project on Friday, April 24. The incident involved a contamination breach with some cement slurry mix coming into contact with a water main, requiring the water supply in the affected area to be shut off.

For the latest updates, visit MountainView.gov/CuestaWaterMain.