Northwest Clear Beta
Certified Backflow Assembly Testing · Washington
Shoreline, Washington

Backflow Testing & Compliance — Shoreline, WA Serving properties across Washington

Northwest Clear coordinates certified backflow assembly testing for Shoreline properties across residential neighborhoods, multifamily complexes, and the growing commercial corridors along Aurora Avenue and near the new Sound Transit light rail stations. Shoreline sits at the northern edge of King County between Seattle and the Snohomish County line, and it has a distinctive regulatory situation for backflow compliance: the city receives its drinking water from Seattle Public Utilities (SPU), but within Shoreline city limits, the City of Shoreline itself is the plumbing authority — not King County Public Health, which handles plumbing inside Seattle. Compliance records are grouped by property address for easier tracking across your buildings.

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Coverage

Shoreline is within our strongest coverage zone. Availability depends on tester routing and appointment windows, with high demand in spring and early summer as annual testing notices go out.

Nearby areas: Seattle, Edmonds, Lynnwood .

What you get

  • Scheduling coordination with certified backflow assembly testers
  • Appointment window and access instructions captured during booking
  • Status tracking by property address in one portal
  • Report delivery when available for your records

Compliance in Shoreline

Shoreline receives drinking water from Seattle Public Utilities (SPU), which administers the cross-connection control program and enforces annual backflow assembly testing. Test reports are submitted through SPU's SwiftComply (XC2Live) online portal by your certified tester. SPU sends renewal notices, but the property owner remains responsible for testing on time. Non-compliance can result in charges from SPU and eventual termination of water service. Because Shoreline's built environment includes older single-family homes with irrigation systems, mid-century multifamily near the new 148th and 185th light rail stations, and small commercial along Aurora Avenue N, the mix of assembly types and hazard levels varies widely across the city — from residential DCVAs on irrigation lines to RPBAs on commercial fire systems. When the City of Shoreline is involved (for permits or new construction plumbing questions), that's separate from SPU's testing program.

Seattle Public Utilities (SPU) — Backflow Program Details ↗

Frequently Asked Questions — Shoreline Backflow Testing

Who is Shoreline's water purveyor?
Seattle Public Utilities (SPU) provides drinking water to Shoreline through its wholesale distribution. SPU enforces the same annual backflow testing requirements it enforces within Seattle city limits.
If SPU handles the water, why is the City of Shoreline mentioned?
Shoreline receives water from SPU but is its own plumbing authority — meaning permit questions about backflow assembly installation and modifications inside Shoreline go to the City of Shoreline, not to King County Public Health (which handles plumbing inside Seattle). Annual testing itself is still submitted to SPU.
How are test reports submitted for Shoreline properties?
Reports are submitted through SPU's SwiftComply (also called XC2Live) online portal by your certified tester. Property owners don't submit reports themselves.
Do multifamily properties near the new light rail stations have different requirements?
The requirements are the same, but larger multifamily buildings usually require containment (premise isolation) via a Reduced Pressure Backflow Assembly (RPBA) at the meter, plus in-premise protection on things like fire sprinkler systems and boilers. SPU's Cross-Connection Control Specialists determine hazard classification per building.
What happens if I don't test on time?
SPU can assess non-compliance charges and, for continued non-compliance, terminate water service to the property. Reminder notices are courtesy; missing them does not exempt you.

Schedule a Shoreline backflow test and keep your compliance records organized by property address.

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