Why Well Pumps Fail Every Summer in Tulare and Visalia (And How to Get Ahead of It)

If you live in Tulare, Visalia, or Exeter, you know exactly what happens when July hits: the thermometer climbs over 100°F, and suddenly, the water stops flowing. We get dozens of calls every summer from homeowners asking the same question: “Why does my well pump always seem to have problems right when it gets hot?” It isn’t just bad luck. It’s a combination of the brutal San Joaquin Valley heat and the massive spike in demand we put on our systems during the summer months.

How Valley Heat Attacks Your Pump

When the temperature outside hits 100°F or higher for days on end, your entire well system feels the pressure. Your pump motor is located hundreds of feet underground, which keeps it relatively cool, but the electrical components in your control box and the piping infrastructure above ground are exposed to the ambient heat.

Excessive heat can cause motor windings to break down faster. More importantly, high temperatures increase the electrical resistance in your system. If your pump is already struggling, that extra heat can be the final straw that causes a motor to seize or a starter relay to fail. When you combine that with the fact that these pumps are often forced to run longer, more frequent cycles to keep up with irrigation and cooling, they don’t get the downtime they need to shed that heat.

Demand Spikes and System Stress

In the winter, your pump might only be filling the tank for your kitchen and bathrooms. In the summer, you’re adding pool filling, livestock watering, and heavy landscape irrigation into the mix. If your system was sized for normal, year-round residential use, it is likely being pushed to its limit during these peak demand months.

When your pump runs constantly to keep up with simultaneous draw points—like the drip lines in your backyard and the hose for your livestock—it wears out the impellers and seals much faster. We often see systems that have been “fine” for years suddenly fail because the owner added an irrigation timer without upgrading the pump’s capacity to handle the extra load.

How to Get Ahead of the Breakdown

You don’t have to wait for a service call. Here is a simple checklist you can run through before the next heatwave:

• Pressure Tank Inspection: Check your pressure tank. If the tank is waterlogged (you can tell by tapping on it; it should sound hollow at the top and solid at the bottom), it will cause the pump to cycle on and off constantly, which is a death sentence in the summer heat.
• Breaker Check: Locate your well pump breaker box. Ensure the connections are tight and there is no evidence of heat damage or charring on the wires.
• Water Level Monitoring: If you have a way to monitor the water level in your well, keep an eye on it. If the water table is dropping faster than the well can recover during summer usage, your pump might be “sucking air,” which will destroy it in a matter of hours.

If you aren’t sure how to perform these checks, it’s better to be safe. We know these systems, and we know how Tulare County’s geology reacts to this heat.

Serving Tulare, Visalia, Exeter, and surrounding Tulare County — call before irrigation season.