Yorba Linda Water District's informational brochure provides customers and community members with clear, accessible information about YLWD, including: An overview of the District’s mission and core services, a description of YLWD’s service area, information on the District's water sources, infrastructure facts and system statistics, key operational highlights, and more.
YLWD Headquarters
Yorba Linda Water District is a public agency serving the residents of Yorba Linda and portions of Placentia, Brea, Anaheim and areas of unincorporated Orange County. Yorba Linda Water District is a special district, totally independent of all city and county governments. YLWD proudly provides high-quality, safe, and reliable water and sewer services to more than 84,000 residents and businesses within our service area. Residential customers make up approximately 93% of the District’s customer base. Yorba Linda Water District is dedicated to protecting public health and the environment with financial integrity and superior customer service. Backed by 82 dedicated water professionals, YLWD sets the standard for the industry through forward-thinking infrastructure investments, including a state-of-the-art PFAS Water Treatment Plant, Heli-Hydrants, groundwater wells, emergency backup generators, advanced system safeguards, and more. YLWD is committed to ensuring water is there when you need it, today and for generations to come.
Our Mission The mission of the Yorba Linda Water District (YLWD) is to provide reliable water and sewer services to protect public health and the environment with financial integrity and superior customer service.
YLWD Staff Photo 2026
Our Vision Yorba Linda
Water District will accomplish our mission to improve the quality of life for those we serve by embracing proven technology, improving customer satisfaction, providing efficient and responsive operations, ensuring reliable infrastructure, and
YLWD Service Area
YLWD serves a 20-square-mile area that reaches the foothills near Chino Hills State Park and spans elevations ranging from approximately 250 to over 1,390 feet above sea level. Delivering water across this varied terrain requires a robust system of wells, pump stations, reservoirs, and pipelines to ensure consistent service at every elevation. YLWD provides both water and sewer services throughout its service area, with the exception of the Locke Ranch area, where drinking water is provided by Golden State Water Company and sewer service is provided by YLWD. The District also maintains emergency interconnections with neighboring agencies to strengthen system reliability and emergency response capabilities. Through strategic infrastructure investments and regional partnerships, YLWD is committed to ensuring a reliable water supply, supporting public safety, and meeting the needs of our customers now and into the future.
assuring fiscal accuracy and transparency.
Water Boundary Anaheim Brea Placentia Yorba Linda County of Orange
GOLDEN AVE
BASTANCHURY RD
LOCKE RANCH (GOLDEN STATE)
YORBA LINDA BLVD
BUENA VISTA AVE
CROWTHER AVE
LA PALMA AVE
0
0.25
0.5
1
Miles
O
DISCLAIMER: This map represents a visual aid intended to assist Public Utility Department personnel with the management of Water System facility. Data provided hereon is not a guarantee of actual field conditions or a substitute for record drawings and field verification.
YORBA LINDA WATER DISTRICT SERVICE AREA
Jun 2025
Water Service Area
PEOPLE SERVED 84,000+
FULL-TIME WATER PROFESSIONALS 82
SERVING THE COMMUNITY SINCE 1909
Integrity Accountability Responsibility
Transparency Teamwork Respect
Our Values
Where Your Water Comes From YLWD provides a reliable water supply that consists of local groundwater from the Orange County Groundwater Basin and water imported from Northern California and the Colorado River. Local Groundwater (About 85%) Most of your drinking water comes from local wells operated by YLWD, located on or near our headquarters. These wells draw from the Orange County Groundwater Basin — a large, natural underground water supply that stretches across northern and central Orange County. This vital resource is carefully managed by the Orange County Water District (OCWD) and replenished by rainfall, water from the Santa Ana River, and supplemental imported supplies. Before reaching your tap, groundwater is treated to meet all state and federal drinking water standards at our advanced treatment facility in Placentia and then delivered safely to homes and businesses throughout our community. Where Your Water Goes After water is used in your home or business, it flows into YLWD’s sewer system, an underground network of approximately 270 miles of sewer pipelines. YLWD does not treat wastewater. Instead, the District maintains and operates the local sewer infrastructure to ensure wastewater is safely conveyed to our regional partner, the Orange County Sanitation District (OC San), which collects, treats, disposes of, and recycles the wastewater. Groundwater Replenishment System Nearly one-third of Orange County’s wastewater is purified and reused to replenish local groundwater supplies. The Groundwater Replenishment System (GWRS), operated in partnership by OCWD and OC San, is one of the most advanced water purification systems in the world using microfiltration, reverse osmosis, and ultraviolet light with hydrogen peroxide. This advanced treatment produces near-distilled quality water that is pumped to percolation ponds, where it percolates into the aquifer and helps replenish the Orange County Groundwater Basin. Imported Water (About 15%) About 15% of your water supply comes from imported sources. YLWD purchases this water from the Municipal Water District of Orange County, our regional wholesale provider. Imported water is supplied by the Metropolitan Water District of Southern California (MWD) and delivered to Southern California from two major sources: Northern California through the California State Water Project and the Colorado River through the Colorado River Aqueduct. Before entering our system, imported water is treated at MWD’s Robert B. Diemer Water Treatment Plant in Yorba Linda to ensure it meets all drinking water standards. For detailed information about YLWD’s water quality and public health standards, view the District’s latest Water Quality Report at www.ylwd.com/waterquality.
YLWD Partners: » Municipal Water District of Orange County » Metropolitan Water District of Southern California » Orange County Water District » Orange County Sanitation District
YLWD’s Well 19
YLWD has made significant investments in our water supply and manages a robust water distribution system and sewer system comprising over 56,000 individual assets valued at $1.37 billion. Learn more about YLWD infrastructure by visiting www.ylwd.com. YLWD Infrastructure
10 GROUNDWATER WELLS (7 ON-SITE)
1 TREATMENT PLANT FACILITY
13 BOOSTER PUMP STATIONS
14 WATER RESERVOIRS
4,052 FIRE HYDRANTS
3 HELI-HYDRANTS IN YLWD SERVICE AREA
11,592 MAIN LINE/HYDRANT VALVES
270 MILES OF SEWER MAINS
355 MILES OF WATER MAINS
6,254 SEWER MANHOLES
Number of Water Connections: Residential: 23,765 Commercial: 845 Irrigation: 933
Number of Sewer Connections: 22,866
YLWD’s PFAS Water Treatment Plant
YLWD proudly maintains a AAA credit rating from Fitch Ratings, the highest rating possible for financial strength and stability. This distinction reflects our responsible budgeting, strong financial reserves, and long-term planning. By maintaining a AAA rating, YLWD can secure financing at the lowest possible cost, saving money for our customers while continuing to invest in reliable water and sewer infrastructure for today and the future. Financial Strength You Can Trust Budget FY 2025-2026
AAA Fitch Rating
Grants Awarded: Federal: $300,000; State: $248,994 Grants Appropriated: Funding that has already been set aside and is ready to use. Federal: $1.105 million Grants Authorized: Funding that has been approved but still needs to be formally funded. Federal: $16.5 million
Total Revenues: $65,457,710 Total Expenses: $51,402,575 Depreciation: $9,272,116 Capital-Related Expenses: $6,124,353
YLWD Resources Available
YLWD TOURS Go behind the scenes with YLWD staff and learn how your water system works. Our guided tours provide an up-close look at the District’s infrastructure and the dedicated professionals who deliver safe, high-quality drinking water to your home and community. Join our Tour Interest List and be notified of upcoming tour opportunities by visiting www.ylwd.com/tours. FREE WATER USE SURVEYS Save water and money with a FREE Water Use Survey for your home or business. Our team will check for leaks, evaluate your irrigation system, and provide personalized recommendations to improve efficiency. Call Customer Service at 714-701-3000 to schedule your water use survey. RESIDENTIAL AND COMMERCIAL REBATES YLWD offers valuable water-saving rebates for homes and businesses through the Municipal Water District of Orange County. Eligible items include high-efficiency clothes washers and toilets, sprinkler nozzles, and weather-based irrigation controllers. Visit OCWaterSmart.com to explore available rebates and start saving. ANNUAL YLWD OPEN HOUSE Get an inside look at how YLWD’s water system works at our annual Open House. Enjoy family- friendly activities, hands-on demonstrations, and guided tours of the J. Wayne Miller, Ph.D. Water Treatment Plant, the largest PFAS treatment facility of its kind in the nation. Meet the team that treats and delivers safe, reliable drinking water every day. Learn more at www.ylwd.com/openhouse.
YLWD’s Fairmont Reservoir
1717 E. Miraloma Avenue, Placentia, CA 92870 (714) 701-3000 • www.ylwd.com
We encourage you to learn more about YLWD by visiting our website and connecting with us on social media to learn about upcoming YLWD events, including our Open House, Infrastructure Tours, and more!
@YLWD @yorbalindawaterdistrict
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