A chronology of Portland's water system.
The Water Committee sends Colonel Isaac Smith to survey Bull Run as an option for supplying the growing city's water needs.
President Benjamin Harrison proclaims the Bull Run watershed as one of several national forest reserves, precursors to the National Forest system.
City completes storage reservoirs at Washington Park and Mount Tabor
and the conduit from Bull Run to the city.
On January 2nd, Bull Run water flows to Portland through 25 miles of pipeline at a maximum capacity of 25 million gallons per day.
President Theodore Roosevelt signs the "Trespass Act" restricting access to the Bull Run watershed.
Dam 1 is completed to increase storage. It impounds 8.8 billion gallons of water. Chlorine is first added to the water supply.
The City of Portland Health Laboratory begins testing the water supply for bacteria.
Portland Water Bureau adds ammonia to water to ensure maintenance of adequate chlorine levels.
Dam 2 is completed following Portland's post-war population boom. It impounds 6.8 billion gallons of water.
Congress passes the Safe Water Act, providing the authority to establish federal drinking standards.
The Bull Run Act is amended to expand the Bull Run Management Unit boundary and extend logging protections to the buffer area.
The Portland Water Bureau begins voluntary releases of water for fish during the summer supply season
The Groundwater protection program is updated in cooperation with Gresham, Fairview and the business community.
The Portland Water Bureau retrofits Portland's historic Benson Bubblers to reduce water flow by 47 percent.
© 2013 Oregon Public Broadcasting.