What does Ordinance No. 4918 do?

It prohibits the sale and distribution of kratom and the opioid alkaloid 7-hydroxymitragynine within San Mateo County.

When does the ordinance take effect?

The ordinance was adopted May 5, 2026, and becomes effective 30 days after that date.

Where can I read the full ordinance text?

View it online at the provided Legistar link or request a copy from the Clerk of the Board at (650) 363-4123.

Who enacted this ordinance?

The San Mateo County Board of Supervisors adopted the ordinance on May 5, 2026.

Ordinance — San Mateo

Official courthouse record · Indexed in NoticeRegistry archive · AI-enriched for research

Affects:General PublicGovernment AgenciesProperty Buyers

San Mateo County adopted Ordinance No. 4918 on May 5, 2026, adding Chapter 4.128 to ban sale and distribution of kratom and 7-hydroxymitragynine products. The ordinance becomes effective 30 days after adoption and full text is available online or from the Clerk.

Key Takeaways

Ordinance No. 4918 bans kratom and 7-hydroxymitragynine products.
Adopted May 5, 2026; effective 30 days later.
Full ordinance text available online and from the Clerk.
Contact Clerk at (650) 363-4123 for copies.

Published: May 14, 2026 · 1 week ago
Category: Ordinance
City: San Mateo

Research context

ordinance notices in San Mateo (last 12 months)

3

What to do next

1
Read the full ordinance
Visit the Legistar link (ID 7993506) to review specific prohibitions and exemptions before the effective date.
2
Contact the Clerk
Call the Clerk of the Board at (650) 363-4123 to request the ordinance text or ask about compliance details.
3
Prepare for compliance
If you sell related products, stop sales or adjust inventory before the ordinance becomes effective 30 days after May 5, 2026.

Frequently asked questions

What does Ordinance No. 4918 do?: It prohibits the sale and distribution of kratom and the opioid alkaloid 7-hydroxymitragynine within San Mateo County.
When does the ordinance take effect?: The ordinance was adopted May 5, 2026, and becomes effective 30 days after that date.
Where can I read the full ordinance text?: View it online at the provided Legistar link or request a copy from the Clerk of the Board at (650) 363-4123.
Who enacted this ordinance?: The San Mateo County Board of Supervisors adopted the ordinance on May 5, 2026.

The suggestions and answers above are AI-generated for general information only. They can be wrong, and we don't take responsibility for their accuracy. Talk to a qualified professional before acting on them.

Legal terms in this notice

Ordinance: A law or regulation adopted by a local government body.
Adopted: Formally approved by the governing body, making the measure official.
Effective date: The date when the ordinance's rules legally begin to apply.

Full Notice Text

NOTICE OF SUMMARY OF ORDINANCE NO. 4918 On April 21, 2026, the San Mateo County Board of Supervisors introduced an ordinance adding Chapter 4.128 to the San Mateo County Ordinance Code banning the sale and distribution of kratom and 7-hydroxymitragynine (7-OH) products. On May 5, 2026, the Board of Supervisors adopted the ordinance. Ayes: Speier, Corzo, Mueller Gauthier and Canepa. Noes: None. The ordinance, adopted by the Board on May 5, 2026, will take effect thirty days from that date. The full text of the ordinance can be viewed online by visiting the following website: https://sanmateocounty.legistar.com/LegislationDetail.aspx?ID=7993506&GUID=1A1ECCB4-6809-49F7-BB51-55204EC0E9EC The full text of the ordinance is also available with the office of the Clerk of the Board of Supervisors, who may be contacted at (650) 363-4123. This Notice is prepared and posted in accordance with Government Code ï¿½ 25124. Sherry Golestan Deputy Clerk of the Board County of San Mateo May 5, 2026 5/14/26 CNS-4041292# SAN MATEO COUNTY TIMES SMCT 6967522 May 14, 2026