Arvada CO · Hot Tub and Spa · Free Tool

Is Your Arvada Hot Tub Leaking? Hot Tub Leak Checker and Cost Calculator

Q: What are the most common hot tub leak sources?

The three most common hot tub leak sources are pump and equipment housing fittings, jet fittings where rubber gaskets have deteriorated, and shell seals at the waterline that crack after Colorado freeze-thaw cycles.

Q: How do I know if my Arvada hot tub is leaking?

Use the bucket test: place a container of hot tub water on the spa lip, both open to the air. After 24 hours, compare the drop in the container to the drop in the tub. If the tub dropped more than the container, a leak is likely.

Arvada hot tubs lose water to evaporation year-round, with higher losses in winter when cold Front Range air draws heat from the water surface. The bucket test below separates a real leak from normal evaporation. Because Arvada bills bimonthly, a hot tub leak may show up as a surprisingly large 2-month statement. For repair help, see our hot tub and spa leak detection service page.

How the Bucket Test Works

Run the test before entering numbers below.

Note the current water level and mark it inside the tub wall with tape.
Fill a small container with hot tub water and place it on the tub lip, open to the same air.
Mark the water level in the container.
Run the jets on normal schedule. Do not add water. Wait 24 hours.
Measure the drop inside the container and the drop in the hot tub. Enter both below.

Enter Your Measurements

Hot Tub Size

Container drop (inches)

Tub drop (inches)

Were jets running during the test?

Yes No

0 gal/day leak

Your container dropped 0 inches, the estimated evaporation rate.

Your hot tub dropped 0 inches more than the container.

At City of Arvada rates, replacing that water costs about $0 per month (water only).

On your bimonthly Arvada statement this would appear as approximately $0 for the 2-month period.

3 Most Common Arvada Hot Tub Leak Sources

Pump and equipment housing: fittings and unions weaken over time, especially after Front Range freeze-thaw cycles. Look for wet spots or mineral deposits on the equipment pad.
Jet fittings: rubber gaskets behind jets deteriorate with UV and chemical exposure. A jet that feels loose or does not rotate smoothly may be the source.
Shell seal at the waterline: the bond between the shell and skirting can crack after Colorado winters. Check the seam at the waterline when the water level is low.

Rates are 2026 City of Arvada water estimates. Wastewater charges do not apply to outdoor water loss. Verify rates at arvadaco.gov or call 720-898-7070.

Frequently Asked Questions

How much water does an Arvada hot tub lose to evaporation per week?

Arvada hot tubs typically lose 1 to 2 inches of water per week to evaporation, more in dry Front Range winters when cold air draws heat from the water surface. The bucket test separates evaporation from a real leak by controlling for the same air conditions.

What are the most common hot tub leak sources?

The three most common leak sources are pump housing fittings weakened by freeze-thaw cycles, jet fittings with deteriorated rubber gaskets, and shell seals at the waterline that crack after Colorado winters.

Does a hot tub leak raise my Arvada water bill?

Yes. Because Arvada bills bimonthly, a hot tub leak may show up as a surprisingly large 2-month statement. The calculator above shows both the monthly cost and the bimonthly bill impact at current City of Arvada water rates.

How do I know if my Arvada hot tub is leaking?

The bucket test is the most reliable DIY method. Place a container of hot tub water on the spa lip alongside the tub, both open to the same air. After 24 hours, if the tub dropped more than the container, a leak beyond normal evaporation is likely. Our hot tub and spa leak detection service uses pressure testing and dye tests to confirm the source. Call (303) 552-3896 to book.

Active Leak Suspected?

Professional hot tub leak detection confirms the source before any work starts.

☎ Call (303) 552-3896