Why Your Water Bill Suddenly Spiked (Irrigation Causes)

You open your water bill and it's shockingly high — with no obvious change in your habits. For most homes, the culprit is outdoors. Here are the irrigation causes of a sudden water bill spike and how to track them down.

The usual suspects

• A leaking valve: a valve that doesn't fully close lets water trickle (or pour) into a zone constantly.
• A broken head or line: a cracked head or underground break can waste large volumes quickly.
• A stuck zone: a zone that won't shut off runs far longer than intended.
• An overwatering schedule: a controller reset or seasonal change left running too long.
• A failing controller running zones repeatedly.

Confirm it's the irrigation

Read your water meter with all water off in the house and yard. If it's still moving, you have a leak. Then shut off just the irrigation supply and check again — if the meter stops, the leak is in your sprinkler system.

Find and fix the source

Run each zone and look for soggy spots, low pressure, heads that won't shut off, or pooling water. These point to the leaking zone or component. Repair the broken head, valve, or line, and review your controller's schedule for accidental overwatering.

Prevent the next spike

Inspect your system monthly, keep the controller seasonally adjusted, and consider a smart controller and leak-detecting flow sensor. Our irrigation team can find hidden waste and fix it.

Frequently asked questions

Why did my water bill suddenly double?

An irrigation leak, a stuck valve, or an overwatering schedule are the most common causes of a sudden outdoor-driven spike.

How do I check for a leak?

With all water off, watch the meter — movement means a leak. Shut off the irrigation supply to confirm whether it's the sprinklers.

Arbol Roble has cared for Inland Empire landscapes since 1997, serving Rancho Cucamonga, Ontario, Fontana, Eastvale, Corona and Riverside. Request a free quote or browse our residential and commercial services.