Summary
Cal Water wants to replace a well lost in 2016 with a new 800-foot-deep well, 17-foot tank, and diesel backup generator in a residential neighborhood. Drilling will create a significant, unavoidable noise impact for about 27 days of 24-hour work, so the commission added vibration monitoring, real-time public noise data, and hotel vouchers before recommending approval.
At a glance
- Total mentions
- 3
- Last 30 days
- 0
Last discussed Jul 28, 2026.
Impact analysis
Cal Water says buying a new site would raise customer rates; residents near the site bear noise and vibration impacts during construction.
Sunnyvale residents gain a reliable, redundant water supply and better fire-protection capacity.
Neighboring residents endure significant nighttime construction noise for roughly a month and bear the visual impact of the tank.
Mentions & discussions (3)
City Council — July 28, 2026
A resident asked for new noise and vibration analysis for the approved Cal Water well project, requesting the drill rig be oriented away from neighbors; the city attorney said the council's approval is final and no further council action is available.
City Council — July 21, 2026
Cal Water won approval to replace a retired drinking water well next to Panama Park, but only after neighbors raised hours of concerns about 24/7 drilling noise, diesel generator fumes, vibration and tree removal. The Council added conditions: more hotel vouchers, public monitoring reports, a solid art fence, and backup power studies.
Planning Commission — March 9, 2026
Cal Water wants to replace a well lost in 2016 with a new 800-foot-deep well, 17-foot tank, and diesel backup generator in a residential neighborhood. Drilling will create a significant, unavoidable noise impact for about 27 days of 24-hour work, so the commission added vibration monitoring, real-time public noise data, and hotel vouchers before recommending approval.
Related development
We'll email you when it's on an upcoming agenda and when it's voted on, at most once a day.
The weekly brief for Sunnyvale
What the council decided, in plain English — one email a week.
Free. Unsubscribe with one click any time. We never sell your email.