Fire Sprinklers, Backflow & Water Safety During San Diego’s Fire Season

In San Diego, fire season is more than a wildfire concern; it’s a potential risk to your water supply.

Without a working backflow preventer, stagnant or contaminated water from these systems could flow backward into the clean water supply.

That’s where backflow prevention comes in.

Why Fire Systems Need Backflow Preventers

Fire sprinkler systems can sit unused for long periods. Over time, they collect rust and bacteria. San Diego requires backflow preventers for:

• Fire sprinkler systems in commercial, multi-family properties, and industrial

• Irrigation and pools

All devices must be tested annually by a certified tester.

Why Fire Season Increases Risk

Between July and October, wildfire threats are highest. This season brings:

• Higher water demand

• More fire system activations

• Greater strain on public water pressure

Without a tested and functional backflow device, your property could contribute to contamination during an emergency.

Staying Compliant without risking fines & Water Supply

In San Diego, fire season can cause pressure drops in the water system, increasing the risk of contaminated water flowing back from fire sprinkler lines. 

Backflow preventers stop this and are required on fire systems, irrigation, and pools. They must be installed above ground and tested yearly by a certified professional to stay compliant and protect the water supply.

San Diego Backflow Testing makes compliance easy. We’re a family-owned company, and when you call, you’ll speak directly with Adam or Jen. We test, repair, and file all paperwork with the city so you stay protected year-round.

📞 Call 877-363-8378 or upload your form to schedule testing before fire season peaks.

Stay safe. Stay compliant. Protect your water.