Backflow Resolutions: An End-of-Year Checklist Before 2026

While most of San Diego is winding down for the holidays, property owners know there’s one last thing to take care of before ringing in the new year: maintenance.

And one task that shouldn’t be overlooked is backflow testing. A proper year-end inspection ensures your water supply stays safe, your valves operate correctly, and your compliance paperwork is ready for submission to the local water authority. 

From checking for leaks and verifying pressure differentials to replacing worn parts, every detail matters before the new year begins.

With that being said, here's a handy backflow resolution checklist to make sure your system is compliant, clean, and ready for 2026, because the best way to welcome the new year is with one less thing to worry about:

Step 1: Inspect the Device for Visible Problems

Before any testing begins, take a close look at your backflow device. A quick visual inspection can reveal issues that might affect performance or safety.

Walk up to your device and check for these common warning signs:

• Leaks around the valve body, fittings, or pipe connections

• Visible cracks in the housing or valve components

• Corrosion or rust on metal parts

• Pressure fluctuations or unusual water flow when nearby fixtures are in use

• Loose or damaged fittings that could allow water to escape

Even small leaks can signal bigger problems inside the device. Catching these issues early helps prevent costly emergency repairs later and ensures your system is ready for a full test.

If you notice anything out of the ordinary, don't ignore it. Addressing visible damage now saves you time, money, and the hassle of dealing with a failed inspection.

Step 2: Test Valve Operation and Relief Function

Once the visual inspection is complete, it's time to test how well the device actually works. This step focuses on the check valves and relief valve, which are the heart of any backflow preventer.

Check Valve Testing

Check valves are designed to open and close based on water pressure. They allow water to flow in one direction while blocking reverse flow. During testing, each valve must be verified to ensure it seats properly and holds pressure without leaking.

Your tester will confirm that:

• The first check valve opens under normal flow and closes tightly when pressure reverses.

• The second check valve operates independently and provides backup protection.

• Both valves seat correctly without allowing any water to pass through in the wrong direction.

Relief Valve Testing

The relief valve sits between the two check valves and acts as a safety release. If pressure builds up in the middle chamber, the relief valve opens to discharge water and prevent damage or backflow.

Testing the relief valve includes:

• Confirming it activates at the correct pressure differential.

• Ensuring it fully closes after activation without continuous dripping.

• Checking that the discharge port is clear and unobstructed.

All of this testing requires calibrated equipment and precise measurements. Using accurate test kits ensures results are reliable and meet certification standards.

Step 3: Check Pressure Differentials and Internal Components

Pressure differential testing is where the real evaluation happens. This step measures how much pressure drop occurs across each check valve and determines whether the device is still protecting your water supply effectively.

Measuring Pressure Differentials

Using a calibrated test kit, the tester attaches gauge lines to test cocks on the backflow device. These gauges measure the pressure difference between the inlet, the chamber between the two check valves, and the outlet.

If the pressure differential falls below the manufacturer's minimum specifications, the device has failed and needs repair or replacement.

Inspecting Internal Components

After pressure testing, the internal parts may need inspection, especially if the device is older or if the test results are borderline. Key components to check include:

• Springs that control valve movement and ensure proper seating.

• Seals and O-rings that prevent water from leaking past the valves.

• Internal surfaces for mineral buildup, debris, or corrosion.

If parts show signs of wear or damage, they should be replaced immediately. Cleaning is sometimes necessary, but it must be done carefully using mild detergent and warm water. Harsh or corrosive cleaners can damage rubber seals or protective coatings.

Step 4: Complete and File the Test Documentation

Testing your backflow device is only half the job. The other half is documenting everything correctly and submitting your report to the local water authority.

What the Test Report Must Include

Every test report needs to be filled out completely and accurately. Missing or incorrect information can result in rejection, forcing you to retest or resubmit.

Your report should include:

• The make, model, and serial number of the backflow device.

• Test results for each check valve and the relief valve.

• Pressure differential readings at each test point.

• The certification number of the tester who performed the work.

• The signature of the property owner or authorized agent.

Filing the Report on Time

Each local water authority has its own submission process and deadlines. Some accept online submissions, while others require mailed or hand-delivered forms. Missing the deadline can result in fines, follow-up inspections, or even temporary water shutoff.

The good news is that certified testers often handle report submission for their clients, ensuring everything is filed correctly and on time.

Step 5: Follow Local Water Authority Requirements

San Diego County is served by multiple water districts, and each one has slightly different rules for backflow testing and reporting.

Know Your Local Authority

Depending on your property's location, you may need to submit your test results to:

• City of San Diego Water Department

• Sweetwater Authority

• Otay Water District

• Padre Dam Municipal Water District

• Helix Water District

Each district has its own deadlines, forms, and testing frequency requirements. Some require annual testing for all backflow devices, while others may have different schedules based on device type or property use.

Why Compliance Matters

Failing to meet your local authority's requirements can lead to:

• Fines or penalties for late or missing test reports.

• Additional inspections or follow-up visits.

• Temporary disconnection of water service until compliance is restored.

Staying ahead of deadlines and knowing your district's specific rules is the best way to avoid these issues.

Step 6: Always Use Certified Testers and Calibrated Equipment

Not everyone can perform a valid backflow test. Only certified professionals with proper training and equipment are authorized to submit test reports to local water authorities.

Why Certification Matters

Backflow testers must complete specialized training and pass a certification exam. This ensures they understand device operation, testing procedures, and local code requirements. Without certification, test results won't be accepted by your water district.

The Importance of Calibrated Equipment

Test kits must be calibrated annually to ensure accurate readings. Over time, gauges can drift out of alignment, leading to false results. A device might pass a test when it should have failed, or vice versa.

Professional testing companies maintain all tools to industry standards and ensure every test is performed with reliable, calibrated equipment.

Step 7: Prepare Early for 2026 Compliance

The end of one year is the perfect time to plan for the next. Getting ahead of your 2026 testing requirements can save you time, reduce system downtime, and help you avoid surprise repairs.

Benefits of Early Scheduling

Booking your 2026 inspection early gives you:

• Guaranteed availability during your preferred time.

• More flexibility to schedule around your property's needs.

• Time to address any repairs or replacements before they become urgent.

• Peace of mind knowing your compliance is already handled.

Adding Backflow Testing to Your Maintenance Calendar

Treat backflow testing like any other annual task. Add it to your property maintenance calendar alongside HVAC servicing, fire extinguisher inspections, and landscape upkeep. Setting a reminder now means you'll never miss a deadline again.

Why Choose San Diego Backflow Testing

When it comes to protecting your water supply and staying compliant, experience and reliability matter. San Diego Backflow Testing has been serving residential and commercial properties across the county for over 26 years.

Here's what sets us apart:

• Complete services including testing, repair, installation, and reporting.

• Locally owned and operated with a strong record of compliance and customer satisfaction.

• Friendly, professional service from a certified, family-run team that truly cares about your property.

• Fast turnaround on paperwork and submissions, so you never have to worry about missed deadlines.

Whether you need a quick annual test or a full device replacement, Adam, Jen, and the rest of our team are here to help.

Take the First Step Before the Year Ends

Testing slots fill up quickly in December as property owners rush to meet year-end deadlines. Waiting until the last minute means risking missed availability, rushed service, and the stress of wondering whether your paperwork will get filed on time.

If you want to skip the headaches and start 2026 with one less thing on your plate, now's the time to act. San Diego Backflow Testing handles everything from inspection and testing to repairs and report submissions. We'll make sure your device is compliant, your paperwork is filed correctly, and your water supply stays protected all year long.

No more worrying about deadlines, decoding district requirements, or tracking down certified testers. Just one quick call or text, and we'll take care of the rest.

Text (619) 937-2323 or email TEST@sandiegobackflowtesting.com to book your appointment before the new year. Or you can simply send us your test form. Don't wait until the calendar turns. Contact San Diego Backflow Testing today and start 2026 with confidence.