Los Angeles County WW District 4 & 34-Lancaster

During 2017, approximately 61% of your tap water came from remedied or banked water sources, while the remaining 39% originated from District groundwater wells. The District acquires treated surface water from the Antelope Valley-East Kernel Water Agency (AVEK), which sources from the Sacramento River/San Joaquin Delta via the State Water Project.

AVEK processes this water at their Quartz Hill Water Treatment Plant, which receives water by gravity flow from the State Water Project. The treatment process includes testing, metering, chemical addition, flash mixing, flocculation, clarification with sediment removal, and dual media filtration. Chlorine disinfection is the final step before distribution to ensure water safety. The plant can produce up to 65 million gallons daily, serving approximately 280,500 residents.

The State Water Resources Control Board updated their source water assessment in 2010 for the State Water Project. The assessment evaluates contamination vulnerability and determines if additional protective measures are needed. Sacramento-San Joaquin River Delta supplies are most vulnerable to municipal, industrial and agricultural activities. Water quality is also affected by the Delta's natural estuarial characteristics and salt-water intrusion patterns dependent on river inflows.

An assessment of District groundwater wells conducted in March 2010 identified vulnerability to various activities in the Lancaster and Desert View Highlands areas, including: dry cleaning operations, high-density housing developments, sewer/septic systems, agricultural operations, gas stations, repair shops, chemical processing facilities, above-ground storage tanks, and other commercial/industrial activities.

1. What are my responsibilities regarding payment?
   Water bills are issued quarterly. Our billing process includes: Day 1 - Bills mailed; Day 26 - Reminder notices sent; Day 31 - Late charges applied to outstanding balances (and every 30 days thereafter); Day 41 - Disconnection notices mailed; Day 57 - Service disconnected for non-payment. Please contact us immediately with any billing questions.
2. When do I receive my bill?
   Each customer receives a quarterly invoice (every three months).
3. How is my bill calculated?
   Every customer's service includes a District-provided water meter that records consumption. Approximately quarterly, a technician records the meter reading (usually via an outdoor contact pad without entering the property). Water meters typically measure in hundreds of cubic feet (HCF), with 1 HCF equaling approximately 750 gallons. Households typically use about 6 HCF per person per quarter. Most residential properties use a 5/8-inch meter.
4. What are the District's current rates?
   Please refer to our 2019 Service Rates (PDF format)
5. What are the minimum charges?
   See 2019 Service Rates (PDF format)
6. How can I conserve water?
   Download our "25 Things You Can Do to Prevent Water Waste" guide (PDF format)
7. How can I detect a leak?
   When no water is running in your home, check if the triangle indicator on your meter is spinning. If it moves, water is flowing somewhere on your property. Unusual increases in consumption may also indicate a leak.