Leak Detection
Pinpoint a concealed leak in a wall, a ceiling or the buried supply line, so only the right spot gets opened.
Homeowner guide
Why Your Louisville, CO Water Bill Is So High: 7 Causes
A water bill does not rise for no reason. Seven causes explain almost every jump, and most can be checked in an afternoon with the meter and a little patience.
By the Flatirons Express Plumbing team ·
Irrigation season
On the Front Range, summer watering drives household use. A sprinkler timer set to run too long, a zone stuck open or a broken head can add a lot of gallons without anyone noticing. The bill arrives weeks later.
Walk each zone while it runs and look for geysers or pooling. In fall, have the system winterized, and in spring test it before the first heavy watering week.
A running toilet
A toilet flapper that does not seal can leak all day. The sound is faint and easy to miss. Dye test the tank and replace worn parts. See toilet repair for what a plumber checks.
Because toilets are the most common hidden leak, check all of them before searching for something harder to find.
Leaks in the house or the yard
A pinhole in a copper pipe, a failing fitting or a cracked buried line can run for weeks. A meter test finds out whether water is moving when nothing is on. Follow up with leak detection if it is.
Check the water heater, the washing machine hoses and the dishwasher supply. These are common sources that hide behind appliances.
More people or new habits
A visiting relative, a new baby, a teenager with long showers or a new hot tub can add use. A newly filled pool or spa adds thousands of gallons. Think about what changed when the bill rose.
If the household really did change, the bill is accurate and the plan is conservation, not repair. The city runs conservation programs, because its water supply is limited.
Common reasons for a jump
A higher bill has a handful of usual suspects. Match your situation to the likely cause.
| Pattern | Likely cause | Where to check |
|---|---|---|
| Rises in summer, falls in winter | Irrigation and outdoor use | Sprinkler zones, timers and heads |
| Steady and high all year | A constant leak such as a running toilet | Toilets and the meter with everything off |
| Sudden jump in one month | A new leak, a billing error or an unusual use | Meter reading against the bill |
| Gradual climb over months | More people or a slow leak | Household habits and hidden lines |
Softener and appliance cycles
A water softener that regenerates too often, or one stuck in a cycle, can send water down the drain continuously. A leaking ice maker or humidifier line is another small but constant source.
If you hear a softener running at odd hours, check the settings or call for a look. See water softener repair.
Billing errors and rate changes
Meters can misread, and estimated bills are sometimes wrong. Compare your own meter reading with the bill. Rates also change, and a utility may restructure tiers. A bill that rises while use stays the same may be a rate issue.
Call the utility with your readings if you suspect an error. They can often test the meter.
How to compare bills
Gather the last twelve months of bills. Look at gallons used, not only the dollar total, since rate changes can move the total without any change in use. A jump that appears in one month and stays high points to a leak or a new habit. A seasonal rise that reverses is normal.
Check whether the bill is based on an actual read or an estimate. If the utility estimated, the next actual read can swing the numbers back. Call the utility and ask for the read dates and the history of your usage.
When to ask the utility for help
Many utilities will review a bill that looks wrong, and some offer leak adjustments when a repair is documented. Policies vary by city, so ask your utility what it offers and what paperwork it needs, such as a plumber's invoice.
Keep a record of the date you found the leak, the date you fixed it and what was repaired. Take photos. The more specific the paperwork, the easier any conversation about the bill tends to be.
A short checklist for the next bill
Read the meter yourself on the day the bill arrives. Compare it with the number printed on the bill. Walk through the house and listen for running toilets. Look at the sprinkler timer for extra start times. Check the water heater and the softener for drips.
If nothing explains the number, ask the utility for a usage history and for the dates of the reads. Keep the paperwork together. If you find a leak, leak detection can narrow the location before anyone opens a wall.
Looking at irrigation settings
Many bills climb in summer because of lawn watering. Check the controller for extra programs, long run times and zones that overlap. A rain sensor or a smart controller can reduce waste, and an audit of heads and valves finds breaks that waste water.
Colorado utilities often publish watering guidance for the season, along with tips on efficient use. Look at your provider's site for the latest recommendations and any rules that apply in your town.
Seasonal and winter leaks
A winter bill that goes up when you are not watering the lawn is a red flag. Pipes that cracked in a freeze may leak after the thaw. A hose left attached to a spigot can crack the pipe inside the wall.
If you find a freeze-related leak, call about burst pipe repair and shut the main valve in the meantime.
Quick answers
Water bill questions
Turn everything off and watch the meter. If it moves, there is a leak. If not, the cause is use or billing.
Some utilities offer relief for repaired leaks. Ask yours, and keep the repair invoice.
Yes. A zone running for hours can add thousands of gallons. Check each zone and the timer.
Not necessarily. Many causes are simple, like a toilet flapper. A test narrows it down.
Services that connect to this topic
Toilet Repair & Installation
Cure a toilet that runs, rocks, leaks or clogs, or install a replacement.
Water Softener Installation & Repair
Add a softener, or revive one that quit regenerating, for houses dealing with hard water scale.
Keep reading
Tracking down a hidden leak at home
A meter test, a toilet dye test and a walk through the basement can find most leaks before you call anyone.
Stopping a toilet that never stops running
A toilet that never stops running wastes water and money. The fix is usually a flapper, a chain or a fill valve.
Winterizing outdoor faucets and sprinklers
A hose left on a spigot and a sprinkler line full of water are two of the most common causes of winter pipe damage. Here is the fall checklist.
Bill climbing for no reason?
Call and tell the dispatcher what the meter shows. A local contractor can look into it.