A licensed STL is legally allowed to install, maintain, and repair all elements of a solar hot water system except the final connection to a potable water source (which must be performed by a licensed journeyman plumber).

STLs are regulated in the same way that all other plumbers in the state of Oregon are: through the Building Codes Division (BCD) plumbing division.  More information on the LRT and the BCD is available on the BCD website .

For a more comprehensive guide on how to become a legal solar installer in the state of Oregon, please refer to the Solar Installations in Oregon white paper.