If You've Received a DC Backflow Testing Notice Contact Us Today!

Durance Plumbing provides certified backflow testing services for DC Water–regulated properties. Our  work is focused on regulatory compliance, accurate testing, and proper documentation—not general  plumbing services. 

Anne-Arundel-Backflow-Testing

Licensed & Certified for DC Water Backflow Testing 

Backflow testing for DC Water must be performed by a properly trained and certified backflow  prevention professional. Durance Plumbing operates under the following credential: 

  • Pipeline Institute Certified Backflow Prevention Technician #23-0210 

This certification qualifies us to test, diagnose, and document backflow prevention assemblies in  accordance with DC Water Cross-Connection Control Program requirements. 

backflow preventer valve

DC Water backflow testing is required when DC Water determines that a plumbing system could allow  contaminated water to flow back into the District of Columbia’s public drinking water supply. Most  property owners begin searching for this service after receiving a DC Water backflow test due notice, a  cross-connection control letter, or a failed backflow test report

Why DC Water Requires Backflow Testing 

DC Water enforces backflow testing to protect public health and water quality. Backflow conditions can  occur due to: 

  • Water main breaks
  • Sudden pressure loss 
  • Fire flow or hydrant use 
  • Plumbing system changes or additions 

Without a properly functioning backflow preventer, contaminants can be drawn back into the public  water system. To reduce this risk, DC Water requires: 

  • Initial testing after installation 
  • Periodic testing (typically annual) 
  • Testing after repair, relocation, or replacement 

DC Water backflow testing is required when DC Water determines that a plumbing system could allow  contaminated water to flow back into the District of Columbia’s public drinking water supply. Most  property owners begin searching for this service after receiving a DC Water backflow test due notice, a  cross-connection control letter, or a failed backflow test report

Backflow Repairs, Rebuilds & Replacement 

If a backflow prevention assembly fails testing, corrective action is required before compliance can be  restored. Depending on the condition of the device, this may involve: 

  • Cleaning and rebuilding internal components 
  • Replacement of test cocks or shutoff valves 
  • Full replacement when repairs are no longer reliable 

We service common backflow assemblies, including RPZ (Reduced Pressure Zone) and Double Check  Valve Assemblies

Schedule DC Water Backflow Testing 

If you’ve received a DC Water backflow test due notice, failed a backflow test, or need annual  compliance testing, contact Durance Plumbing to schedule certified service. 

Reasons to Choose Durance Plumbing for district of Columbia Backflow Testing

  • Pipeline Institute Certified Backflow Prevention Technician 
  • Experience working with DC Water cross-connection compliance requirements
  • Commercial and regulated-property expertise 
  • Accurate testing, documentation, and compliance support 

Backflow testing is regulated work. Proper certification and experience matter.

Our DC Water Backflow Testing Process 

Durance Plumbing follows a compliance-focused process designed to meet DC Water requirements:

  1. On-site evaluation of the backflow assembly and access conditions
  2. Certified backflow testing using calibrated equipment
  3. Immediate pass/fail results provided on site
  4. Repair or replacement recommendations if the device fails 
  5. Proper documentation completed for DC Water compliance 

Our familiarity with DC Water procedures helps prevent rejected reports and compliance delays. 

Frequently Asked Questions About DC Water Backflow Testing

DC Water backflow test due — what do I do?

If you received a DC Water backflow test due notice, you must schedule certified testing before the  listed deadline and submit proper documentation.

Who can perform DC Water backflow testing?

Backflow testing must be performed by a properly certified backflow prevention technician. Not all  plumbers are qualified to perform this work. 

How often is backflow testing required by DC Water?

Most regulated backflow assemblies require annual testing. Additional testing may be required after  installation, repair, or relocation. 

What happens if my backflow preventer fails the test?

Failed devices must be repaired or replaced and then retested until a passing result is achieved.

How long does a backflow test take?

Most standard backflow tests take 30–60 minutes, depending on device size, condition, and site access.

Can DC Water shut off my water for backflow non-compliance?

Yes. Continued non-compliance may result in enforcement actions, including possible water service  interruption.

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