Residential Recycled Water Program

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Delta Diablo Residential Recycled Water Fill Station

Residential Recycled Water Fill Station Closure:

October 28th, 2017, Last Day of Operation

We would like to thank all members of our service area who contributed to potable water conservation efforts and looked to other sources, such as recycled water, to supplement their landscape irrigation needs over the last three years.  With the end of the drought and the lifting of outdoor water use restrictions, the residential recycled water demand was significantly lower this irrigation season, and user visits have consistently declined since early September.  As a result, the Residential Recycled Water Fill Station (RRWFS) will close at the end of October 2017.  The District established guidelines to consider future operation of the RRWFS when drought conditions result in mandatory conservation directives, and outdoor water use restrictions impact residents in the District’s service area.

Please check our website for updates, and click here to change your email notification preferences.



Delta Diablo is committed to the responsible use of all water resources and has supported the statewide efforts to conserve potable water supplies.  After five consecutive years of below-average rainfall, the 2016/17 winter season has been one of the wettest on record.  The State Water Resources Control Board (SWRCB) completed an assessment of the available water supplies and has lifted the drought emergency declaration, as most major water reservoirs are above normal storage levels. Since conservation requirements have been lifted by water suppliers and the number of participants using the Recycled Water Fill Station declined in 2016, the Fill Station availability has been reduced and modifications to the program have been implemented.  Please note that all users – new and existing – will need to obtain a new Authorized User ID Card for 2017 and pay an annual access fee of fifty dollars ($50).  The access fee will be used to offset fill station operating costs, including seasonal staffing.  To become an authorized Recycled Water Fill Station user in 2017, see the section on How to Obtain Recycled Water listed below. 


Program Guidelines:

Eligible participants include residents from Antioch, Bay Point, and Pittsburg.

The recycled water can be used to hand-water lawns, gardens, and landscaping to help save drinking water supplies. 

The recycled water has not been treated to drinking water standards and should not be ingested or allowed to run off into storm drains.


Location, Dates, and Hours:

The Delta Diablo Fill Station is located at Delta Diablo's water resource recovery facility, 2500 Pittsburg-Antioch Highway, Antioch, California, on the border between Pittsburg and Antioch.

Fill Station open from June 3, 2017, through October 28, 2017.

The day and hours of operation are:


8:00 a.m. to 3:00 p.m.

The operating schedule of the Fill Station will be adjusted periodically through the summer to match customer demand and to accommodate the seasonal and wet-weather impacts on irrigation requirements. The Fill Station is not open during rainy conditions (rain the day of, prior to, or the day after).  Residents are not able to receive recycled water outside of the posted operation hours.  


How to Obtain Recycled Water:

  • All users – existing and new – are required to obtain an Authorized User ID Card for 2017 (previously issued User ID Cards are no longer valid).  In order to obtain a card for 2017, the following steps must be taken.
  • Pay a one-time annual access fee of $50 (access fee allows customers to make an unlimited number of trips to the Fill Station during operating hours, at a maximum of 300 gallons per trip).  Annual access fees can be paid via check made out to Delta Diablo (preferred) or cash (credit card facilities are not available).
  • The annual access fee can be paid at Delta Diablo’s main office (2600 Pittsburg-Antioch Highway, Antioch, California, 94509) during normal business hours (8 a.m. to 5 p.m., Monday thru Friday, except public holidays).
    • Be sure to bring your receipt to the Fill Station for verification of payment.  At the Fill Station, staff will verify payment, ensure a completed Residential Recycled Water Use Application/Agreement is on file, provide training, and issue an Authorized User ID Card.
  • Complete an initial or refresher training session on program rules and guidelines for recycled water user.
  • New users, please take the time to review the Residential Recycled Water Use Application/Agreement prior to your first visit to the Fill Station. 

For more information about the Delta Diablo Residential Recycled Water Fill Station, please contact us by email at or call 925.756.1900.


Recycled Water Containers:

Customers are using a variety of containers, as well as pumps for pumping water from containers to a manual sprinkler or wand.  

Your containers must have water-tight lids, not leak, and be secured for safe transport.  NOTE:  Garbage cans (metal or plastic) are not suitable containers for safely transporting water and will not be allowed.  

The maximum fill per trip is 300 gallons, but you can return as often as you like.  There is no limit on number of trips per day.  (We are enforcing the 300-gallon limit.  If you arrive with a container that holds more than 300 gallons, you will only be allowed to take 300 gallons.  If you show up with two large totes that each hold 275 gallons or more, you will be turned away and not allowed to fill either tote.)

Minimum container size is one gallon.  

Please note…water is heavy!  Ten gallons weigh more than 80 pounds; 100 gallons weigh more than 800 pounds.  When driving vehicles with such heavy loads, be sure to allow for additional stopping distances.

If watering your front yard, lawn signs indicating the use of recycled water are available.  Please ask the attendant when visiting the Fill Station.

At the end of the season, containers must be thoroughly cleaned and disinfected (1 tablespoon of bleach per quart of water) before they can be used for potable (drinking) water.


Do Not Connect to Buried Irrigation Systems:

Tanks, pumps, hoses, and equipment that contain recycled water must not be connected to buried irrigation systems, even if those systems are disconnected from your drinking water system.  This is a human health concern.  We do not want you or your neighbors to end up drinking recycled water due to an illegal interconnection between the drinking water supply and recycled water supply.  Any such connection violates the state’s drinking water regulations, the Residential Recycled Water Use Application/Agreement you sign in order to use the Fill Station, and your city’s water code.  Violators may be subject to fines and loss of Fill Station privileges.


Recycled Water Quality:

The recycled water produced by Delta Diablo meets all regulatory requirements for unrestricted, non-potable uses.  For recycled water quality data, click here.


Delta Diablo Links:


Other Bay Area Fill Stations:


 RRWFS w queue

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