Safe water
Protect groundwater quality, prevent contamination and help ensure every community can trust the water it depends on.
Water Replenishment District · Division 4
Clean water.
Clean water.
Strong communities.
Sergio Calderon is working to keep our region’s water supply safe, sustainable and affordable—today and for the generations ahead.
Safe waterSustainable supplyResponsible stewardship
Serving since2006
50%
About half of the region’s supply comes from local groundwater.
<½
Groundwater costs less than half as much as imported water.
17
Communities are represented across WRD Division 4.
Public serviceRooted in community
Meet Sergio Calderon
A public servant who understands everyday challenges.
Elected to the Water Replenishment District in 2006, Sergio represents the people who live and work in Division 4.
His work in public service, education and healthcare keeps him close to the families he serves. Sergio has worked as a teacher and teacher adviser with LAUSD’s Division of Adult and Career Education, helping adults prepare for college and careers. He has also supported individuals with developmental and intellectual disabilities in nursing and administrative roles.
01 Water leader
02 Educator
03 Healthcare professional
04 Small-business operator
Read the official WRD profile
The work ahead
Water security is community security.
Local, reliable groundwater protects families from rising costs and a changing climate. Sergio’s work centers on three clear priorities.
Sustainable supply
Advance conservation, stormwater capture and recycled-water infrastructure so our region relies less on imported water.
Affordable service
Protect ratepayers through responsible stewardship and smart investments in dependable local water resources.
Division 4
One district.
One district.
Seventeen communities.
Division 4 connects communities across southeast Los Angeles County. Sergio represents the people living and working throughout this diverse region.
View the official district profile
BellBell GardensCommerceCudahyEast Los AngelesFlorence-GrahamHuntington ParkLos AngelesLynwoodMaywoodMontebelloMonterey ParkPico RiveraSouth GateVernonWalnut ParkWillowbrook
In his own words
Experience you can see.
Watch Sergio discuss groundwater stewardship and practical ways every household can conserve water.
Join the effort
Help protect our
Help protect our
water future.
Volunteer your time, share the message and help neighbors learn why local groundwater matters.