If You've Received a Backflow Testing Notice from The City of Rockville, Contact Us Today!
Durance Plumbing is a licensed, certified, and approved backflow testing provider for properties located within the City of Rockville. We specialize in regulatory compliance, testing, repairs, and documentation for municipal and authority-regulated water systems.
Licensed & Certified for City of Rockville Backflow Testing
Backflow testing in the City of Rockville must be performed by properly licensed and certified professionals. Durance Plumbing operates under the following credentials:
- City of Rockville, MD Master Plumber License #PLL-0001731
- Maryland Master Plumber License #77820
- WSSC Master Plumber License #71643
- Pipeline Institute Certified Backflow Prevention Technician #23-0210
These licenses allow us to legally test, repair, and certify backflow prevention assemblies within the City of Rockville and surrounding regulated service areas.
City of Rockville backflow testing is required when the City of Rockville determines that a plumbing system could allow contaminated water to flow back into the public drinking water supply. Most property owners begin searching for this service after receiving a City of Rockville backflow test due notice, a cross-connection compliance letter, or a failed backflow test report.
City of Rockville vs. WSSC – Why It Matters
One of the most common points of confusion for Rockville property owners is who actually regulates their water service.
- Some properties inside Rockville city limits are served directly by the City of Rockville Water Division.
- Other Rockville properties are served by WSSC, even though they have a Rockville address.
The backflow testing requirements, submission process, and enforcement authority depend on which entity provides your water service — not just your mailing address.
Durance Plumbing regularly works with both the City of Rockville and WSSC and can determine which authority applies to your specific property before testing begins.
Why the City of Rockville Requires Backflow Testing
The City of Rockville enforces backflow testing to protect public health and water quality. Backflow can occur due to:
- Water main breaks
- Sudden pressure loss
- Fire flow events
- Plumbing system modifications
Without a properly functioning backflow preventer, contaminated water can be drawn back into the public water system. To prevent this, the City requires:
- Initial testing after installation
- Periodic testing (typically annual)
- Testing after repair, relocation, or replacement
Reasons to Choose Durance Plumbing for Rockville Backflow Testing
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- Licensed City of Rockville Master Plumber
- Licensed Maryland Master Plumber and WSSC Master Plumber
- Pipeline Institute Certified Backflow Prevention Technician
- Experience with both municipal and WSSC compliance programs
- Commercial and regulated-property expertise
- One contractor for testing, repair, replacement, and compliance support
Backflow testing is regulated work. Choosing a properly licensed contractor protects your property and your water service.
Our City of Rockville Backflow Testing Process
Durance Plumbing follows a compliance-focused process designed to meet City of Rockville requirements:
- Confirm governing authority (City of Rockville or WSSC)
- On-site evaluation of the backflow assembly and site conditions
- Certified backflow testing using calibrated equipment
- Immediate pass/fail results provided on site
- Repair or replacement guidance if the device fails
- Proper documentation completed for the applicable authority
Our familiarity with both Rockville and WSSC procedures helps prevent rejected reports and compliance delays.
Frequently Asked Questions About City of Rockville Backflow Testing
City of Rockville backflow test due — what do I do?
If you received a backflow test due notice from the City of Rockville, you must schedule certified testing before the listed deadline and submit proper documentation.
Who is allowed to perform backflow testing in Rockville, MD?
Backflow testing must be performed by a properly licensed and certified backflow technician. Not all plumbers are authorized to test and certify backflow devices.
How often is backflow testing required in Rockville?
Most regulated backflow assemblies require annual testing, with additional testing 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 do I know if my Rockville property is served by the City or WSSC?
Some Rockville properties receive water directly from the City, while others are served by WSSC. We can determine the correct authority before testing begins.
How long does a backflow test take?
Most standard backflow tests take 30–60 minutes, depending on device size, condition, and site access.
Can my water be shut off for backflow non-compliance?
Yes. Continued non-compliance may result in enforcement actions, including possible water service interruption.
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