How to Tell if You Are Losing Money With a Secret Water Leak

It had been a couple months since my step-son moved out of the house, leaving the wife and I empty nesters for the first time. Ironically, the water bill didn’t offer any evidence to the fact. To my chagrin, our bill had actually managed to climb upwards.

How could this be?” I asked myself.

I searched for answers.

I suppose it is summer. We use a little more water this time of year, watering plants and what not. But, not that much…”

It just didn’t add up. We had a young adult living with us who took daily showers, ran the faucet and washed his own clothes. Surely his absence would leave a dent in the bill? Right?

I decided to be patient and waited for the next water bill to arrive.

Sure enough – the bill told the same story. No improvement in the charges.

I took the matter to the city’s utilities department and inquired about what might be the issue.

This is what they said:

water bill letter from city utilities dept

Leaks? We don’t have any leaks in the house. I would know if we had leaks!

To the city’s credit, the administrator was very helpful. They offered a list of things to check to make sure our house wasn’t experiencing any unknown leaks. Apparently these can happen without the homeowners knowledge. So much so, they even have a form letter they send out to residents whose water bill seems to be getting higher and higher:

leaking water letter

They also sent me a list of common household water “suckers”:

  • Your shower heads – are they low flow?  Different shower heads can dramatically change the amount of water used during showers.  The length of each shower can greatly increase/decrease the amount of water consumed
  • Toilets – Low flow?  Older toilets use up to 8 gallons more per flush than newer low flow toilets
  • Washing machine – is it high efficiency?  Older machines can use 40+ gallons per load while the HE machines use 4-8 per load
  • Water softener – if you have one, how often is it recharging/going through cycles?  Those can use 150 gallons per recharge.
  • How often are you running the dishwasher?  Those consume 4-15 gallons per load, depending on the age and efficiency.
  • Do you turn the water off when brushing teeth?  If left to run, that can equate to up to 20 gallons of water per session.

Whoa! I couldn’t believe how much water we could consume.

DID YOU KNOW: Most city’s now read your water meter via a radio signal? There’s been reports about how these can go awry and sometimes even cause health problems? (though most don’t contain lead, like older meters once did)

Here’s an easy way to see if your home has a secret water leak

The administrator at the city gave me a really handy way to check our house for a water leak. It’s super easy and I wanted to share it with you in case you are ever suspect of a water bill that seems to be creeping up.

Here’s the steps:

  1. Locate your water meter. Oftentimes this is located in the basement, by all of your other major appliances. For us, it is connected to some pipes next to our water heater and water softener. They often look something like this:

    water meter
    Water meter
  2. Note the reading. Do this at night – right before bedtime. Ours has a cap over it – just lift that up and jot down what the reading on it is. You’ll likely only need the last 3 digits.
  3. Be sure there’ll be no water running. Sometimes your water softener recycles or you flush the toilet during the middle of the night. If you can avoid any of this taking place overnight, you’ll get the best results.
  4. Check the reading. When you first awake, be sure you check the meter right away. When I did this, I checked the meter at midnight and then again at about 5am – before I got up for the day – to see if the meter had moved at all.

This simple test should give you an indication if there are any unforeseen leaks going on. If the meter is the same as when you read it before bedtime, you’ve passed the water leak test. If you notice it has moved – then you have some issues. You may want to run the test a second night just to be sure your results are good (and not some anomaly).

The most common water leaks

According to the city administrator the toilet seems to be the biggest culprit and offered some good advice to test it:

One of the most common leaks is the toilet.  Usually you can hear the water running, but not always. You can put a few drops of food coloring in the tank and wait to see if any colored water runs into the bowl of the toilet, without flushing it. If it does, you have a leaking toilet. This would be a fairly minor leak.

However, larger appliances can cause bigger problems:

Most water softeners, humidifiers or hot water heaters have a hose or an easily seen leak leading to a drain in the utility room floor. Feel the end of the hose. If there is any water coming out, this is where your leak is. This may be a pretty major leak.

While our bill eventually saw a decrease in the next billing cycle, it has still left me a bit uneasy. I don’t know many people who regularly check their meters to see if they are matching up with their utility bills.

This experience has certainly taught me to keep a closer eye on it.

Hope this helps in case you are experiencing an unknown uptick in your water bill. Have you ever had a water leak issue like this and what was the problem?

MONEY-SAVING TIP: Want to save money on those refrigerator water filters? Here’s how you can.

Sharing is caring:

You might also be interested in:


  1. Charlie says:

    Great tips Aaron! We had a water leak one year that was caused by busted sprinkler line. I knew i had a problem because my water bill kept soaring more and more each month. So another tip would be to make sure your sprinklers aren’t running at night when you are checking the water meter. Our problem with the busted water line was caused by an improperly blown out sprinkler system.

    • Aaron says:

      Ugh – how frustrating! Was worried we had the same thing one year when we had water coming through the wall (ended up being ice dam).

  2. Mrs. Groovy says:

    Lots of great tips, Aaron. We had a huge spike in our bill a few years back, when meter readings were done manually. We asked for a do-over and turns out the water co made an error. I’m glad your city administrator was helpful.

  3. Chad says:

    Another source of water loss that many customers forget about are water powered back-up sump pumps. They get tripped and quite often don’t turn off due to lack of use and maintenance.

Leave a Reply

Your email address will not be published. Required fields are marked *