Backflow happens when water reverses direction and a plumbing connection allows used or contaminated water to move toward a clean-water supply. It can concern irrigation, commercial plumbing, fire-suppression equipment, or other cross-connections. For homeowners and property managers in St. Helens and Columbia County, identify the connection, note any testing request, and get advice before changing the system. Northwest Plumbing Services is family-owned by David and Mindy Sass and has served the Northwest since 1991. Call the St. Helens office to confirm whether current backflow assessment, testing, repair, or installation needs fit the team’s availability or require a specialist.
Why backflow prevention matters
A backflow-prevention device helps keep water from a fixture, irrigation line, or other connection from moving into the potable supply. Keeping it in working order supports safer water and may help meet requirements from an owner, insurer, municipality, or other authority. Rules vary, so confirm the requirement for your property.
- Watch for a failed test notice, a damaged device, or a change to the plumbing connected to your water supply.
Planning an inspection or repair
Before calling, gather the address, device location, connected use, and any paperwork from an inspector or water provider. Do not remove, bypass, or adjust the device. A professional can help determine whether the next step is testing, maintenance, repair, replacement, or referral.
- Ask who is authorized to test or certify the device for your property and jurisdiction.
- If water quality may be affected, stop using the questionable connection and contact the relevant utility or authority for direction.
A practical local starting point
Northwest Plumbing Services also handles plumbing repairs, water and drain lines, repiping, water heaters, fixtures, remodels, new construction, and commercial plumbing. That context can help when a backflow concern is part of a larger change. The office can clarify current availability or a specialist referral.
- Call (503) 366-1323 or email office@nwplumbingservices.com with the device type, location, and reason for the request.
- The showroom is at 1271 Columbia Blvd, St. Helens, OR 97051; mailing address: PO Box 492, St. Helens, OR 97051.
What to confirm before work begins
Ask whether the work is available, who will perform required testing or certification, what documentation you will receive, and whether another provider must complete part of the process. Clear answers make it easier to protect your water supply and meet local requirements.
Start with a clear conversation.
Tell us what’s happening
Share the concern, your property location, and the information you have so far.
Discuss the work
Talk through the system, project needs, and whether the topic fits your property.
Confirm next steps
Confirm availability, scope, and any requirements before scheduling work.
Questions about your project
How often should a backflow device be tested?
Testing frequency depends on the device, property, and local authority. Check your notice or rule and ask which qualified tester or agency should confirm the schedule.
Can I repair or adjust the device myself?
Do not bypass, disassemble, or adjust a backflow device yourself. Record symptoms and seek guidance from a qualified plumbing or testing professional.
Does Northwest Plumbing Services provide backflow testing?
Backflow testing and certification availability is not assumed on this page. Contact the St. Helens office to confirm the current scope, authorization requirements, and whether a specialist referral is needed.