Why doesn’t the City expand its tertiary treated water or “purple pipe” infrastructure?

Following extensive studies completed from 2009 to 2013, it was determined that the expansion of the tertiary treated water (recycled) distribution system (aka purple pipe) was not the best option for the City of Ventura. In Ventura, urban and agricultural irrigation is limited in demand with seasonal variability. Even if a purple pipe system was fully expanded throughout the City, the demand for irrigation-quality water would not offset, or equal, the amount of potable water (safe to drink) that could be added to the City’s water supply through potable water reuse.

Tertiary treated water (recycled), delivered in purple pipes, is limited in use and water quality. To utilize tertiary treated water, a dual system must be plumbed requiring a permit, backflow testing, inspection, and training.  Due to the high Total Dissolved Solids (TDS) and chloride level in the water, tertiary treated water cannot be used in areas where hard water deposits would interfere or on crops with a low salt tolerance. In order for the City to expand its use of tertiary treated water, additional treatment would be required.

 For these reasons, the City is pursuing VenturaWaterPure, a potable reuse project that will diversify Ventura’s water supply, secure a new locally owned water source, meet regulatory requirements, and improve water quality. The treatment of tertiary water to potable standards allows for the expansion of recycled water use to anything, including drinking water, and eliminates the need for a separate purple pipe system.  

Show All Answers

1. What is VenturaWaterPure?
2. What are the components of VenturaWaterPure?
3. What have been the safety considerations of potable reuse?
4. Why is VenturaWaterPure needed?
5. Why is VenturaWaterPure the preferred recycled water solution?
6. Why is the project scheduled for 2025 completion?
7. How will VenturaWaterPure be funded?
8. Why doesn’t the City expand its tertiary treated water or “purple pipe” infrastructure?
9. Why doesn’t the City convey its tertiary treated water to the City of Oxnard as an alternative to the VenturaWaterPure Project?
10. Why isn’t the City sending the tertiary treated water to United Water Conservation District’s (United) spreading grounds?
11. What is Antibiotic Resistant Bacteria and Genes
12. Is ARB/ARG removed during the advanced water purification process?
13. What measures are taken to ensure purified water sources are safe?