Who was affected?
All Portland Water Bureau customers and some regional water providers were impacted by this notice. Visit the Portland Water Bureau's website
for details and maps of affected areas.
What residents should do during a boil notice
Boiling water kills the E. coli
- Boil tap water for one minute and let it cool before using it, or use bottled water.
- Use boiled or bottled water for drinking, making ice, brushing teeth, and food preparation.
- Discard any ice you have that was made from local tap water.
- It is not necessary to boil water for your pets.
On Wednesday, May 21, the City of Portland notified Drinking Water Services at the Oregon Public Health Division that a water sample taken from an outlet at one of its eastside open reservoirs, Reservoir 1, tested positive for the presence of Escherichia coli
On Thursday, May 22, repeat sampling from Reservoir 1 was negative. However, a routine sample result in the distribution showed a presence of E. coli
on May 22. While repeat sample results from the distribution system were negative on May 23, a routine sample result from eastside open Reservoir 5 released this morning showed the presence of E. coli
. As a result, Drinking Water Services is requiring the city to issue a boil water notice to residents in Portland, Burlington Water District, parts of the City of Gresham (north of I-84), Lake Grove Water District, Lorna Water Company, Palatine Hill Water District, Rockwood PUD, Tigard Water Service Area, a small portion of TVWD (approximately 170 customers), Valley View, and West Slope. The notice affects an estimated 670,000 Portland water consumers and wholesale customers.
Portland has taken Reservoir 1 and 5 out of service and will conduct additional sampling in the affected area on Friday, May 23.
Oregon Drinking Water Quality Act
Enacted in 1981, the statute (periodically amended) includes Oregon Revised Statute (ORS) 448.119 to 448.285;454.235; and 454.255
. The purpose of the above act is (in part) to:
- Ensure that all Oregonians have safe drinking water.
- Provide a simple and effective regulatory program for drinking water systems.
- Provide a means to improve inadequate drinking water systems.