Why Is My Water Bill So High in Santa Rosa? 7 Common Plumbing Causes

If your water bill suddenly increased but your household water use has not changed, there may be a plumbing problem somewhere in your home. A running toilet, dripping fixture, hidden pipe leak, or problem with your main water line can waste a surprising amount of water before you notice any visible signs.

For Santa Rosa homeowners, an unusually high water bill is often one of the first warnings that something in the plumbing system needs attention. Here are seven common causes to check.

1. A Running Toilet

A running toilet is one of the easiest plumbing problems to overlook. You may not see water on the floor or notice an obvious leak because the water is flowing directly into the toilet bowl.

Common causes include:

• A worn or damaged flapper

• A faulty fill valve

• An incorrectly adjusted float

• Problems with the flush valve

• A chain that prevents the flapper from sealing completely

If you hear your toilet running when nobody has used it, do not ignore it. Even a relatively small continuous leak can add unnecessary water usage to your monthly bill.

Quick Toilet Leak Test

Add a few drops of food coloring to the toilet tank without flushing. Wait about 15–20 minutes. If colored water appears in the bowl, water is leaking from the tank into the bowl and the toilet likely needs repair.

2. Hidden Leaks Behind Walls or Under Floors

Not every plumbing leak creates an obvious puddle.

A small leak inside a wall, beneath flooring, or in another concealed location may continue for days or weeks before becoming visible. During that time, your water meter continues recording the lost water.

Watch for warning signs such as:

• Unexplained increases in your water bill

• Damp or discolored drywall

• Musty odors

• Warped flooring

• Peeling paint

• The sound of running water when fixtures are off

• Unusual warm or damp areas on floors

Finding a hidden leak early can help prevent a relatively small plumbing repair from becoming a much larger water-damage problem.

3. Dripping Faucets and Fixtures

A faucet that drips occasionally may seem harmless, but a fixture that leaks continuously wastes water every day.

The problem may come from a worn washer, cartridge, O-ring, seal, or another internal component. Showerheads, hose bibs, and other fixtures can develop similar leaks.

Check the fixtures throughout your home, including bathrooms, kitchens, laundry areas, garages, and outdoor faucets.

If several fixtures are leaking at the same time, the combined water loss can contribute to a noticeable increase in your bill.

4. A Leak in the Main Water Service Line

The water line running between the meter and your home can also develop a leak.

Because much of this pipe may be underground, the problem is not always immediately visible inside the house.

Possible warning signs include:

• A sudden unexplained increase in water usage

• Wet or unusually green areas in the yard

• Soft or muddy ground when it has not rained

• Reduced water pressure

• Water appearing near the foundation

• The water meter continuing to move when everything is turned off

A suspected underground water-line leak should be professionally diagnosed rather than located by unnecessary digging.

5. Irrigation or Outdoor Plumbing Leaks

Sometimes the source of a high water bill is outside the house.

Check outdoor hose bibs, irrigation connections, exposed plumbing, and other exterior water fixtures for leaks.

Outdoor leaks can be particularly easy to miss because the water may soak directly into the soil instead of creating visible water damage inside the home.

If your water usage increased unexpectedly, outdoor plumbing should be part of your inspection.

6. Water Heater Leaks

A leaking water heater can waste water while also causing damage around the unit.

Inspect the area around your water heater for:

• Water around the base

• Moisture near pipe connections

• Corrosion

• Dripping from valves or fittings

• Unusual sounds

• Signs of recurring moisture

Some water heater leaks come from replaceable components, while leakage from the tank itself may indicate that the unit needs replacement.

Do not ignore water collecting around a water heater. The cause should be identified before the leak becomes more serious.

7. Your Household Water Usage Actually Changed

Not every higher water bill means you have a leak.

Before assuming there is a plumbing problem, consider whether your household recently changed its water usage.

For example:

• More people staying in the home

• Additional laundry

• More frequent showers

• Outdoor watering

• Filling a pool or spa

• New appliances or fixtures

• Seasonal changes in water use

If none of these explain the increase, it is worth checking the plumbing system.

How Can I Check My Santa Rosa Home for a Hidden Water Leak?

Your water meter can provide a useful first check.

First, turn off faucets, showers, washing machines, dishwashers, irrigation, and every other water-using fixture or appliance.

Make sure nobody uses water during the test.

Then check your water meter. Wait for a period without using any water and check it again.

If the meter continues registering water use while everything is off, there may be a leak somewhere in the plumbing system.

This test can tell you that water may be escaping, but it does not necessarily tell you where the leak is located.

When Should I Call a Plumber About a High Water Bill?

If your bill increased significantly and you cannot identify the cause, having the plumbing system inspected can help prevent continued water waste and possible property damage.

You should consider calling a plumber when:

• Your water meter indicates usage while everything is off

• You repeatedly hear water running

• You notice unexplained moisture or water stains

• Your water pressure suddenly changes

• Your toilet continues running after basic adjustments

• Your water heater is leaking

• You suspect an underground or concealed pipe leak

Dejusto Plumbing provides plumbing repairs and leak troubleshooting for homeowners throughout Santa Rosa and Sonoma County.

Call (707) 322-9873 if you need help identifying the source of an unexplained plumbing leak or water-usage problem.

Preventing Unexpected Water Bills

A few simple habits can help catch plumbing problems before they become expensive.

Check toilets and faucets periodically for leaks, inspect around your water heater, pay attention to unexplained changes in water pressure, and compare your water usage from one billing period to the next.

Most importantly, investigate unusual increases instead of waiting several billing cycles to see whether the problem disappears.

A high water bill may be frustrating, but it can also be an early warning that helps you find a plumbing problem before it causes more serious damage.