Adopt an ordinance adding Chapter 4.124 to the San Mateo County Ordinance Code banning the sale and distribution of nitrous oxide subject to limited exceptions, previously introduced on August 26, 2025, and waive the reading of the ordinance in its entirety.

Committee

BOARD OF SUPERVISORS DISTRICT 5

Requested by

BOARD OF SUPERVISORS DISTRICT 5

Introduced

August 21, 2025

On agenda

September 9, 2025

Passed

September 9, 2025

Enacted

September 9, 2025

Enactment no.

Ordinance-4911

Where it was heard

BOARD OF SUPERVISORS Sep 9, 2025 approved Pass

Watch San Mateo County

Say what matters to you — a street, a company, a subject — and we will email you when San Mateo County files something about it.

Watch this

Free for 14 days, no card — and nothing charges itself: at day 14 the emails simply stop unless you choose to subscribe ($19 a month). One email when something matches, and nothing else. Unsubscribe from any of them. Searching stays free — it is public record.