Backflow Prevention in the Denver Metro
Need backflow prevention or annual testing now? We help Denver Metro homeowners and property managers keep water supplies safe with certified inspections, repairs, and replacements. With a 4.7 rating from 4,155 reviews and flat-rate pricing, you’ll know what to expect. Our licensed, NATE-certified team provides honest recommendations and careful cleanup. Serving the Denver Metro, including Denver, Aurora, and Lakewood. Schedule service today to stay compliant, especially before irrigation season starts.
Why Choose Us
What Our Customers Say
"They ended up replacing the whole backflow preventer... it needed to be done anyway."
"The technician Matt was fast and efficient. We had our Backflow unit inspected."
Answers to Common Questions
View All FAQsHow often does a backflow preventer need to be inspected?
Backflow preventers should be inspected and tested once per year to stay compliant with local regulations. Expect a county notice about 45 days before your deadline. Our certified plumbers typically complete the test in about 30 minutes when no issues are found, check for valve leaks, and submit the report to the county for compliance. We service homes and businesses across Denver, Highlands Ranch, and nearby areas.
Updated: 2025-12-30 00:00:00
Need help in Highlands Ranch, CO? Call (720) 740-0350 or book online.
"The technician Matt was fast and efficient." — Tom D.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNkb3JLa1JnEAE!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICdorKkRg%7CCgwIhKqwrgYQ6JPw-gI%7C?hl=en-US[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNIX2N6aXl3RRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICH_cziywE%7CCgwIypf0tgYQsJCmyAM%7C?hl=en-US[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNyb2RYLXlnRRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICrodX-ygE%7CCgwI55attAYQ-JrIqwM%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNEeUlTa19nRRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICDyISk_gE%7CCgwIz-T8rwYQoPDpzgE%7C?hl=en-US[4] https://bellplumbing.com/plumbing/commercial-services/[5] https://bellplumbing.com/about/bell-service-membership/[6] https://bellplumbing.com/about/specials/[7] https://bellplumbing.com/heating/heating-installation-replacement/[8] https://bellplumbing.com/service-areas/dupont-co-plumbing-hvac-electrical/How often do backflow preventer valves need to be replaced?
Backflow preventer valves don’t have a fixed replacement timeline. Replace them when they fail annual testing, leak, or cannot be restored with repairs. Annual testing is required to stay compliant, and our certified plumbers inspect for valve leaks, perform repairs, or install a new county‑approved assembly when needed. The test typically takes about 30 minutes when there are no issues, and we submit the report to the county for you. We serve Denver, Highlands Ranch, and surrounding areas.
Updated: 2025-12-30 00:00:00
Need help in Highlands Ranch, CO? Call (720) 740-0350 or book online.
"The technician Matt was fast and efficient." — Tom D.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNkb3JLa1JnEAE!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICdorKkRg%7CCgwIhKqwrgYQ6JPw-gI%7C?hl=en-US[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNIX2N6aXl3RRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICH_cziywE%7CCgwIypf0tgYQsJCmyAM%7C?hl=en-US[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNyb2RYLXlnRRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICrodX-ygE%7CCgwI55attAYQ-JrIqwM%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNEeUlTa19nRRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICDyISk_gE%7CCgwIz-T8rwYQoPDpzgE%7C?hl=en-US[4] https://bellplumbing.com/plumbing/commercial-services/[5] https://bellplumbing.com/about/bell-service-membership/[6] https://bellplumbing.com/about/specials/[7] https://bellplumbing.com/heating/heating-installation-replacement/[8] https://bellplumbing.com/service-areas/dupont-co-plumbing-hvac-electrical/How much does it cost to replace a backflow preventer?
Backflow preventer replacement cost depends on the assembly type, size, location, and any needed repairs. We replace county‑approved devices (double check, double check detector for fire systems, and lead‑free reduced pressure assemblies) and confirm pricing on site with flat‑rate, no‑surprise pricing. After work, we test the device (typical tests take about 30 minutes when no issues exist) and submit the required report to the county. We serve Denver, Highlands Ranch, and nearby communities.
- Cost factors: device type (DC, DCDA, RP), pipe size/access, and repair needs.
Updated: 2025-12-30
Need help in Highlands Ranch, CO? Call (720) 740-0350 or book online.
"The technician Matt was fast and efficient." — Tom D.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNkb3JLa1JnEAE!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICdorKkRg%7CCgwIhKqwrgYQ6JPw-gI%7C?hl=en-US[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNIX2N6aXl3RRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICH_cziywE%7CCgwIypf0tgYQsJCmyAM%7C?hl=en-US[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNyb2RYLXlnRRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICrodX-ygE%7CCgwI55attAYQ-JrIqwM%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNEeUlTa19nRRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICDyISk_gE%7CCgwIz-T8rwYQoPDpzgE%7C?hl=en-US[4] https://bellplumbing.com/plumbing/commercial-services/[5] https://bellplumbing.com/about/bell-service-membership/[6] https://bellplumbing.com/about/specials/[7] https://bellplumbing.com/heating/heating-installation-replacement/[8] https://bellplumbing.com/service-areas/dupont-co-plumbing-hvac-electrical/How much does backflow testing cost for residential properties?
Residential backflow testing is priced after a quick on-site assessment, and a Bell plumber will confirm your flat-rate before work starts. Testing typically takes about 30 minutes if no issues. We file the test report with the county. Annual testing is required to stay compliant. We serve Denver, Highlands Ranch, and nearby.
Price can vary based on:
- Device type (double check, detector, or reduced pressure)
- Number of assemblies
- Access to the device
- Repairs needed, if any
Updated: 2025-12-30 00:00:00
Need help in Highlands Ranch, CO? Call (720) 740-0350 or book online.
"The technician Matt was fast and efficient. We had our Backflow unit inspected." — Tom D.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNkb3JLa1JnEAE!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICdorKkRg%7CCgwIhKqwrgYQ6JPw-gI%7C?hl=en-US[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNIX2N6aXl3RRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICH_cziywE%7CCgwIypf0tgYQsJCmyAM%7C?hl=en-US[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNyb2RYLXlnRRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICrodX-ygE%7CCgwI55attAYQ-JrIqwM%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNEeUlTa19nRRAB!2m1!1s0x0:0xc7725e3070bf249a!3m1!1s2@1:CIHM0ogKEICAgICDyISk_gE%7CCgwIz-T8rwYQoPDpzgE%7C?hl=en-US[4] https://bellplumbing.com/plumbing/commercial-services/[5] https://bellplumbing.com/about/bell-service-membership/[6] https://bellplumbing.com/about/specials/[7] https://bellplumbing.com/heating/heating-installation-replacement/[8] https://bellplumbing.com/service-areas/dupont-co-plumbing-hvac-electrical/
Where We Work
What areas do you serve for backflow prevention?
We serve the Denver Metro, including Denver, Aurora, and Lakewood. See the full list of communities we cover below.