1848
Brownsville is founded. Residents depend on horse-drawn carts from the Rio Grande to deliver water and kerosene lamps to light their homes.
1900
Brownsville citizens ask for an election to create a municipal system after a franchise awarded by the Brownsville City Council to John Maxcy fails to begin construction.
1907
Brownsville citizens approve a $70,000 bond issue to build a water-works and an electric
light plant.
1908
Brownsville builds an electric and water utility. The first electric light plant cost $11,000. Brownsville’s first 16 street lights are not lit during the full moon to save money.
1910
Brownsville builds new water filtration plant.
1931
Brownsville builds a new water filtration plant at the cost of $152,000. It can supply 4 million
gallons of water daily and is called "one of the best in the state."
1937
Brownsville puts Municipal
Electric Plant into operation.
1950
Brownsville constructs Water
Treatment Plant No. 2.
1960
Brownsville’s City Commission authorizes a charter amendment proposing the creation of a public utilities board; residents vote for the amendment, resulting in the creation of the Public Utilities Board (BPUB) of the City of Brownsville, Texas.
1970
BPUB expands Water Treatment Plant No. 1 to match Brownsville residential and industrial expansion.
1976
BPUB completes Southside Wastewater Treatment Plant improvements to treat 10,000 gallons of wastewater.
1980
BPUB builds Robindale (North Plant) Wastewater Treatment Plant to treat 5 million gallons a day.
1983
BPUB creates a Public Utilities Board Consumer Advisory Panel (PUBCAP) to create a communications channel for its customers. The panel soon became a model for other electrical utilities’ consumer advisory boards.
1986
BPUB acquires 18% share of Oklaunion Power Plant near Vernon, Texas.
1992
BPUB constructs a 36-inch raw water pipeline from the Rio Grande to BPUB Water Treatment Plant No. 2. Resaca de la Guerra waterway is no longer needed to carry raw water to the treatment plant.
1999
BPUB buys 21% of the natural gas-powered
Hidalgo Energy Center in Edinburg, Texas.
2000
The Brownsville Public Utilities Board rebrands itself with the introduction of a new logo.
2004
BPUB begins Southmost Regional Water Authority (Brackish Groundwater) Desalination Water Treatment Plant operations.
2009
BPUB uses a $46 million American Recovery and Reinvestment Act (ARRA) stimulus grant to upgrade much of the city’s wastewater infrastructure.
2014
BPUB renovates and expands Robindale Wastewater Treatment Plant to increase treatment capacity to 14.5 million gallons daily. It is the first design-build plant in Texas.
2015
BPUB enters a purchase agreement with Sendero Wind Farm in Hebbronville, Texas to bring 78 megawatts of electricity to Brownsville residents.
2020
Oklaunion Power Plant is decommissioned.