HDWD is working towards beginning construction on Phase 1 of the Sewer Project.  There are three parts that make up the construction process: installation of the collection system, construction of the Wastewater Treatment Facility and private property connections. The District anticipates to break ground on the collection system in October 2016.

For more information, click here to view an updated pamphlet explaining details about the Sewer Project.

Installation of the collection system will begin on January 9, 2017 in the east section of Paradise Valley. To track the progress of construction click here to view a real-time map.




Construction of Phase 1 of the Sewer Project will begin in October 2016.  Click here to view a timeline of project milestones.


There are three phases of the Sewer Project. Construction of Phase 1 will run from January 2017 – December 2021. Phase 2 and 3 construction will follow in December 2021 – 2025. Phase 1 construction is broken into various stages “Packages” starting from A-D. For more details about when construction will be approaching your neighborhood click here.


HDWD is working on obtaining easements for the future installation of the sewer project’s collection system. Click here to see if your property has been assigned to an easement proposal.



Connecting to the system will become available after 2018. HDWD is currently working on developing a step-by-step guide to assist property owners with this process. For more information click here.





Is a wastewater collection and treatment system necessary?

We need a wastewater collection and treatment system to protect groundwater quality, and comply with a State mandate prohibiting discharge from septic tanks in our area.

Septic system discharge has been slowly degrading local water quality for decades. Nitrates and other contaminants from septic system discharge are currently reaching groundwater.

In 2011, the California Regional Water Quality Control Board passed a resolution that will prohibit discharge from septic tanks in parts of Yucca Valley starting with Phase One on May 19, 2016 June 30, 2021, with Phases Two and Three to follow on May 19, 2019 and 2022 2025, respectively. If residents continue to discharge, they may be fined up to $5,000 daily by the State Board. This project is a comprehensive solution that will ensure compliance and protect groundwater quality at the lowest possible cost, while giving HDWD customers access to a reliable and affordable sewer system.

How will it protect groundwater quality?

Septic system discharge leaves behind nitrates and other contaminants that are absorbed into the soil and eventually reach the water that is stored naturally underground in our aquifer. These contaminants degrade the quality of our aquifer over time. Hi-Desert Water District relies on groundwater from the aquifer to deliver clean, safe drinking water to your home.

This project would replace septic systems and their negative impacts on water quality with a sewer system that collects wastewater and delivers it to a treatment plant, where it will be processed and treated until it is clean enough to be recharged into the aquifer without compromising water quality.

What are the State’s Septic Discharge Prohibitions?

According to its revised Basin Plan amendment, the Colorado River Basin Regional Water Quality Control Board has extended the prohibition dates in the Town of Yucca Valley to June 30, 2021 for Phase 1, and for Phase 2 and 3 December 31, 2025. This means that, as of those dates, property owners within the corresponding phases will have to cease discharging from their septic systems.

What happens if I don’t comply?

The Regional Board’s Enforcement Staff will “implement prompt, consistent, fair, and progressive enforcement” to bring anyone who fails to stop discharging into compliance. Non-compliance letters, Cleanup and Abatement Orders, Cease and Desist Orders, Civil Liability Complaints, and fines of up to $5,000 per day can be used against individual property owners.

The prohibitions will take effect whether or not the Wastewater Reclamation Project moves forward. If the project does not move ahead, property owners would be required to comply with the mandate individually or face enforcement actions.

HDWD is attempting to create a community-wide solution.

Why not just treat the water at the wells that produce the water before serving it to customers? Isn’t that easier?

The Regional Water Quality Control Board requires us to protect the groundwater supply, not just treat water before delivering it. Because treating the water at the wells would not address the potentially irreversible contamination of the groundwater supply, this method will not solve our problem, and the Regional Board will not allow it.

Collection System & Facility

How many months after the Assessment District approval, will construction start on the new sewer lines and plant?

Construction will start approximately 14 months after the approval of the Assessment District.

Will the treatment facility smell?

Modern wastewater treatment facilities use a number of technologies that effectively minimize odors. HDWD’s new facility would utilize these advancements, resulting in very few odor problems.

What will happen to the water after it is treated?

It will be returned to our groundwater supply through on-site recharge ponds, and will be extracted at a later date through a production well.

Are the roads going to be repaved during Phase 1, after the sewer line is installed?

All roads with existing pavement in Phase 1 will be repaved after the sewer line has been installed.


Click here to view a photo gallery of constructing a centralized sewer system.



Installation of Los Osos’ Collection System

Los Osos Private Property Connection


Wastewater Treatment Facility Tour

Click Here to submit your questions concerning the assessment or construction of the Sewer Project.