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Moorpark, CA Noise from Specific Sources: Generator Noise (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Applies to
generators, pumps, engine machinery
Requirement
working exhaust and intake silencers
Timing
in effect at all hours
Related caps
Tables 1, 2, 2A dB limits

Summary

Any mobile or stationary internal combustion engine, including portable generators, must run with working exhaust and air intake silencers under Moorpark's noise ordinance.

Operating or permitting the operation of any mobile or stationary internal combustion engine powered equipment or machinery that is not equipped with suitable exhaust and air intake silencers in proper working order.

H. Operating or permitting the operation of powered model vehicles:

1. Between the hours of seven (7:00) p.m. and seven (7:00) a.m. so as to create a noise disturbance across a residential or commercial property line or at any time to violate the provisions of this chapter.

2. In such a manner as to exceed the levels set forth for public space land use in Table 4, measured at a distance not less than 100 feet (30 meters) from any point on the path of a vehicle operating on public space or public right-of-way.

I. Sounding or permitting the sounding of any electronically amplified signal from any stationary bell, chime, siren, whistle, or similar device, intended primarily for nonemergency purposes, from any place, for more than 10 seconds in any hourly period; provided, however:

1. Houses of religious worship that utilize an electronically amplified or nonamplified signal from a bell, chime, carillon or similar device that may signal the commencement or completion of worship services shall be exempt from this provision.

2. Sound sources covered by this provision and not exempted under any other subsection may be exempted by a temporary use permit or conditional use permit issued by the city.

J.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4978490; v10 updated 2026-07-01).

Full Breakdown

Moorpark Municipal Code § 17.53.070(G) makes it unlawful to operate or permit the operation of any mobile or stationary internal combustion engine powered equipment or machinery unless it is equipped with suitable exhaust and air intake silencers in proper working order. The rule applies to generators, pumps, and similar gas- or diesel-powered equipment regardless of time of day, and sits alongside the equipment sound-level caps in Tables 1, 2, and 2A.

Violations & Fines

Operating an unsilenced generator or engine can draw a code enforcement citation following a noise complaint and sound-level investigation under § 17.53.060.

Frequently Asked Questions

Are portable generators banned in Moorpark?
No, but they must have functioning exhaust and air intake silencers under § 17.53.070(G) and stay within the equipment noise tables.
Does the silencer rule apply only at night?
No: it applies at any hour since it addresses equipment condition, not a time-of-day curfew.

Sources & Official References

Other rules in Moorpark

All Moorpark rules

California rules heatmap·Compare Moorpark to another location·View the California noise from specific sources overview

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