Pico Rivera, CA Public Conduct: Loud Party Ordinance (2026)

Adopted by Ordinance 1177 on December 12, 2023, Chapter 9.52 targets parties that spill into excessive noise, traffic, obstruction of streets, underage drinking, drug use, fights, vandalism or litter. Section 9.52.020 defines a 'loud or unruly gathering' as any party of two or more people on a residence or private property where that conduct occurs, and declares such a gathering a public nuisance outright. A 'responsible person' reaches beyond the host: it covers the owner, a tenant or lessee, the landlord of another person responsible for the gathering, and anyone who organizes, supervises or controls the event.

When Los Angeles County Sheriff's deputies respond under Section 9.52.050, they must hand every responsible person a written notice naming the prohibited conduct under Section 9.52.020(E), warning that a fine is coming, that a second law-enforcement or fire response will be billed as response costs, and that the recipient can request a hearing to appeal both the fine and the costs. Section 9.52.040 carves out two exceptions: alcohol consumed under parental or guardian supervision at a cultural or religious activity, and the specific attendee who reports underage drinking to police is shielded from penalty.

If the responsible person is a minor, the underage host and their parent or legal guardian are jointly and severally liable for whatever penalty follows.