SPECIAL EVENTS

Detect-A-Leak Week

The Detect-A-Leak Week campaign encourages residents and businesses to find and fix common household leaks that often go unnoticed, wasting our precious water supply and increasing utility bills.

According to the Environmental Protection Agency, household leaks can waste nearly 900 billion gallons of water each year -- equal to the annual water use of nearly 11 million homes.

Each year, the Board of Water Supply (BWS) partners with other agencies and businesses to help raise awareness. For 2026, join the BWS and City Mill this year as they host two free, family-friendly events where residents can learn how to detect and fix common leaks, get practical water-saving tips, pick up free toilet leak detection dye tablets, play games, and win prizes.

Saturday, April 11, 2026

  • Town Center of Mililani (near California Pizza Kitchen and the Cookie Corner)
  • 12:00 PM to 2:00 PM

Saturday, April 18, 2026

  • Kāhala Mall (Center Court)
  • 11:00 AM to 1:00 PM
Detect-A-Leak Week April 12-18, 2026 - Events at Town Center of Mililani Saturday, April 11, 12:00pm to 2:00pm and Kahala Mall Saturday, April 18, 11am to 1:00pm. Board of Water Supply and City Mill

Leaks can run, but they can’t hide!

Did you know that 10 percent of homes have leaks that waste at least 90 or more gallons of water per day? In many cases, homeowners can fix leaks without a major financial investment. Join the Board of Water Supply and City Mill during Detect-A-Leak Week to check your home for leaks inside and outside.

Toilets:

  • toiletToilet leaks are often “sneaky” because they can go unnoticed. A worn or faulty flapper is one of the most common causes and can allow water to continuously leak from the tank into the bowl.
  • These inexpensive rubber parts can wear out or build up minerals over time. Replacing them is quick and easy.
  • To check for a leak, place a dye tablet in the toilet tank and wait 10–15 minutes without flushing. If color appears in the bowl, you likely have a leak.
  • More than 5,000 free toilet leak detection dye tablets are available while supplies last at all City Mill stores, Satellite City Hall locations, and the BWS lobby (630 South Beretania Street).

Outdoor Leaks:

  • water sprinklerA leaking irrigation system can drive up water bills while wasting our limited supply of water.
  • Look for wet spots or unusually green patches of grass, which may indicate a broken underground pipe.
  • Inspect hoses and spigots for leaks at connection points.
  • Check sprinkler heads and irrigation lines for cracks, breaks, or misalignment.

showerheadFaucets & Showerheads:

  • A faucet leaking at the rate of one drip per second can waste more than 3,000 gallons of water per year.
  • Check faucets, showerheads, and connection lines for drips or moisture.
  • Listen for running water, as some leaks are easier to hear than see.
  • Install WaterSense-labeled aerators to reduce water use without affecting performance.

Detect A Leak Week 2026 - Get your free toilet leak detection tablets at Board of Water Supply, City Mill, or at Satellite City Halls. Drop a dye tablet in the tank of the toilet and check for discolored water in the bowl.

Mayoral Proclamation:

Coming Soon!

Conservation Resources:

Updated: 04/01/2026

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