Accepted Certified Plumbing Companies Providing Backflow Related Services

The average cost is between $100-$180 per backflow assembly test (this is an average some companies may charge more).

If you do not see a plumbing company on our list, please have them contact us by email or phone before you schedule with them. We need to verify that they are licensed and certified in accordance with Maryland regulations to perform cross-connection/backflow prevention-related plumbing services in AACO. If a Company is not on our list and we have not verified their information the AACO Backflow Program reserves the right to not accept a test report performed by said Company.

Disclaimer

This consolidated list of plumbing companies was compiled by the AACO Backflow Program as a convenience for our customers. AACO Backflow Program has verified that the plumbing companies on this list are licensed and certified following Maryland regulations to perform cross-connection/backflow prevention-related plumbing services. Inclusion on this list is entirely voluntary. The companies listed do not work for nor are they associated in any way with AACO Backflow Program and AACO Backflow Program assumes no liability for any work performed by a listed company. 

AACO Backflow Program does not endorse or recommend any company on this list, nor do we set the pricing for these companies. We suggest customers obtain multiple estimates before hiring a plumbing company to test their backflow preventer.