Skip to Main Content View Text-Only

Portland Water Bureau

From forest to faucet, we deliver the best drinking water in the world.


1120 SW Fifth Ave, Suite 600, Portland, OR 97204

More Contact Info

Portland to request variance to LT2 drinking water treatment requirement

By Teresa Black 0 Comments

Portland to request variance to LT2 drinking water treatment requirement

The Portland Water Bureau announced today that it intends to develop a request for a variance to the treatment requirements of the federal Long Term 2 Enhanced Surface Water Treatment Rule (LT2).

The variance would enable the City to avoid much of the $100 million expense required to design and build a water treatment facility at the City’s Bull Run watershed to address the parasite Cryptosporidium.

Portland began intensive water quality monitoring in December 2009 to gather evidence relevant to the question of whether the Bull Run watershed was at risk of delivering the type and quantity of Cryptosporidium that can cause illness if consumed.

No Cryptosporidium was found in any of the tests at any of the sampling locations. These results build on previous routine testing results which document that Cryptosporidium has not been detected in the watershed since September 2002.

For more information on the bureau’s efforts to obtain a variance to the treatment portion of the LT2 rule, please view the LT2 website which will be updated as new information becomes available.


Please review our Code of Conduct rules before posting a comment to this site.
Report Abuse (Please include the specific topic and comment for the fastest response/resolution.)

Post a Comment
E-mail (visible to admins only)
 Remember Info Yes   No
Spam Prevention In the Pacific Northwest, what state is Portland in?