Decibel Limits: Fontana vs Rialto
How do decibel limits rules compare between Fontana, CA and Rialto, CA?
Fontana and Rialto have similar restriction levels.
Fontana, CA
San Bernardino County
Fontana uses the Zoning and Development Code (Table 30-469) to cap exterior sound levels by receiving land use. Typical residential limits are 65 dBA during daytime and 55 dBA at night, with industrial zones allowed higher ceilings during the day.
View full Fontana rules →Rialto, CA
San Bernardino County
Rialto Municipal Code Title 9, Chapter 9.50 (Noise Control) establishes exterior noise limits measured at the property line of the impacted receiving land use. Limits vary by zoning of the receptor (residential strictest) and time of day (7am-10pm daytime vs 10pm-7am nighttime). Construction activity is separately regulated under the same chapter.
View full Rialto rules →Key Facts Comparison
| Fact | Fontana | Rialto |
|---|---|---|
| Authority | Zoning Table 30-469 plus Noise Element | - |
| Residential Day | About 65 dBA typical cap | - |
| Residential Night | About 55 dBA typical cap | - |
| Interior Target | 45 dBA CNEL for new homes | - |
| Measurement | Calibrated SLM by Code Enforcement | Receiving property line (not source) |
| Code section | - | Rialto MC Ch. 9.50 |
| Day vs night | - | 7:00 am-10:00 pm daytime; 10:00 pm-7:00 am nighttime |
| State interior standard | - | 45 dB CNEL (CCR Title 24 Pt 2 §1207) |
Highlighted rows indicate differences between cities.
Fontana FAQ
Do I need a sound meter to file a complaint?
No. Start with a written complaint; Code Enforcement or Police will bring a meter if the issue is ongoing.
Are impulse noises like bangs treated differently?
Yes, the Noise Element treats single-event peak limits separately from average limits, letting enforcement cite short, sharp impacts.
Rialto FAQ
Do I need a decibel meter to file a complaint?
No. Report to Community Compliance; code officers use calibrated Type 2 sound level meters.
Are these limits the same in every zone?
No. The limit depends on the zoning of the property hearing the noise, not the noise source's zoning.
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