Hot Tub Rules: Downers Grove vs Naperville
How do hot tub rules rules compare between Downers Grove, IL and Naperville, IL?
Naperville has fewer restrictions than Downers Grove.
Downers Grove, IL
DuPage County
Illinois treats public spas and hot tubs as regulated swimming facilities, applying statewide water quality, signage, and bather load standards through IDPH.
View full Downers Grove rules →Naperville, IL
DuPage County
Naperville requires permits for hot tubs and spas capable of holding over 24 inches of water. Barrier requirements apply per the International Swimming Pool and Spa Code. If barriers cannot be installed, a locking safety cover is required.
View full Naperville rules →Key Facts Comparison
| Fact | Downers Grove | Naperville |
|---|---|---|
| Max temperature | 104 degrees Fahrenheit | - |
| pH range | 7.2 to 7.8 | - |
| Drain covers | Anti-entrapment required | - |
| Warning signs | Posted at entry | - |
| Permit | - | Required over 24 in. deep |
| Barrier | - | Required or locking cover |
| Electrical | - | Separate permit needed |
| Drainage | - | No chemicals to storm sewer |
Highlighted rows indicate differences between cities.
Downers Grove FAQ
What temperature limits apply to Illinois public hot tubs?
Maximum 104 degrees Fahrenheit under state public health rules. Operators must monitor and log temperatures, and post warnings for vulnerable bathers near the spa.
Are home hot tubs regulated by Illinois state law?
No. The Swimming Pool Act covers public and semi-public spas. Private residential hot tubs are regulated by local building, electrical, and plumbing codes only.
Naperville FAQ
Do I need a permit for a hot tub in Naperville?
Yes, if it holds more than 24 inches of water. You need both a building permit and an electrical permit for the hot tub installation.
Does my hot tub need a fence?
A barrier per the International Swimming Pool and Spa Code is required. If a barrier cannot be installed, a safety cover that locks must be used as an alternative.
Compare other topics
See how Downers Grove and Naperville compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool