Read about NW Natural’s conduit guidelines and conduit availability.


Conduit installation standards for new construction services

  • Conduit installation is required for new construction services regardless of length.
  • NW Natural will provide yellow PVC conduit at no cost to you.
  • For safety reasons service depth and separation requirements are strictly enforced.
  • Install conduit at least 12” from other utilities in the trench.
  • Service depths for conduit installation are:

                    -Outside property line: 30” minimum; 36” maximum
                    -Inside property line: 18” minimum; 24” maximum, or for cross lots, 24” minimum

  • Tape or cap the ends of the installed conduit to prevent blockage.
  • Mark the location of the installed PVC conduit with a section of conduit rising at least 2 feet above grade.
  • Install conduit in straight runs, unless the installation is a cross lot or is otherwise approved by NW Natural.
  • Contact NW Natural for conduit installations greater than 200 feet.
  • Backfill material should be free from rocks where the service line will be connected to the main or curb service.
  • Meter placement should be marked separately and should meet all current meter requirements.
  • Conduit should be properly installed before you place your service installation order.

For more information about conduit policy and pickup, visit the Builder Services page.

NW Natural conduit pickup for new construction services

To make sure the program is as easy to use as possible, NW Natural will provide conduit for service installation at no charge. Pick up conduit between 7am – 9am, Monday – Friday (excluding holidays) or follow contact instructions below. Please note that the Sherwood and Clark County locations have extended pickup hours, and some centers ask you to arrange pickup times in advance.

Resource Center Location     Contact
Central Coast Call in advance to arrange pickup 
1405 Highway 101, Lincoln City, OR             541-994-2111, ext. 8560                 
Central Willamette Valley
7150 Supra Dr. SW, Albany, OR 541-926-4253, ext. 8242 
Clark County Limited supply of conduit available 24/7 outside gate
11218 NE 66th St., Vancouver, WA 360-571-5465, ext. 2070
Columbia Gorge Call in advance to arrange pickup or delivery
1125 Bargeway Rd, The Dalles, OR 971-808-7639
North Coast
176 W Marine Dr., Astoria, OR 503-298-3210
North Willamette Valley
3123 Broadway NW, Salem, OR 503-585-6611, ext. 8060
South Coast Call ahead to arrange delivery
1625 N 7th St., Coos Bay, OR 541-267-5655, ext. 6530 
South Willamette Valley 
790 Goodpasture Island Road, Eugene, OR 97401                                541-342-3661, ext. 8334
Mt. Scott
9222 SE Knapp, Portland, OR 503-226-4211, ext. 6770
12120 NE Inverness Dr., Portland, OR 503-226-4211, ext. 8770
21605 NW Amberwood Dr., Hillsboro, OR 503-226-4211, ext. 6970
Sherwood 7am – 2:30pm every weekday. Go to Stores Desk inside building to receive conduit.
20285 SW Cipole Rd., Sherwood, OR 97140 503-226-4211, ext. 2976

Revised December January 2019.

Guidelines for conduit placement

Watch these short videos for conduit pickup instructions, plus installation standards for residential services.