"The first new water source to arrive at our treatment plant in 50 years." That is how Helix Water District describes the East County Advanced Water Purification Program in its September 10, 2026 update. Helix also chose where to explain it in person. The district is not using a hotel ballroom or a downtown office. It is holding the talk at The Water Conservation Garden on the Cuyamaca College campus, on a Thursday evening in October.
That fits the rest of the month. The same hilltop at the top of Rancho San Diego is hosting most of the neighborhood's public events this fall. Look at the October calendar and nearly every event that brings people together leads back to two addresses: 12122 Cuyamaca College Drive West, home of the Garden, and 900 Rancho San Diego Parkway, home of the Samuel M. Ciccati Performing Arts Center.
The Night the Water Talk and a Vibraphone Share a Campus
Thursday, October 22 shows the pattern best.
From 6 to 7 p.m., Helix Water District hosts its East County Advanced Water Purification presentation at the Garden. The first half hour covers the project and water quality, and the second half hour is a live Q&A with Helix staff. Space is limited, and registration is at hwd.fyi/awp. This is a repeat session. Helix held the first one at the Garden on September 1. For October, the district says General Manager Brian Olney and Director of Water Quality and System Operations Luis Valdez will be there to answer questions.
Thirty minutes after the Q&A ends, the Ciccati Performing Arts Center has Nathan Hubbard Trio: New Music for Vibraphone and Strings on the schedule. The college lists its concerts at 7:30 p.m. as a general rule. So on one Thursday, the most practical meeting of the season and one of its more unusual concerts take place on the same campus within about 90 minutes of each other.
What the Helix Presentation Will Actually Cover
The meeting matters because the project is close to finished and not yet running. Those two facts are easy to mix up.
The project's September 18, 2026 construction update says the main facilities in Santee are "nearing completion." The major buildings, structures and equipment are in place, and crews are testing equipment and control systems as the program prepares to accept wastewater. Grading, paving, walkways and landscaping remain. Helix's most recent timeline is direct: East County AWP "will come online in 2027." Some earlier news coverage expected production to start sooner. The 2027 date in Helix's September update is the current one.
Here is what the system is built to do, according to Padre Dam Municipal Water District and Helix:
- Capacity: The plant can treat up to 16 million gallons of wastewater a day and produce about 11.5 million gallons of purified drinking water daily.
- Share of supply: Once complete, the plant will provide up to 30% of Helix's water needs.
- Technology: It uses the same technologies as similar facilities in Orange and Los Angeles counties.
- Route to the tap: Purified water goes to Lake Jennings. There it blends with imported water and Lake Cuyamaca water, then gets treated again at Helix's R.M. Levy plant before distribution.
- Who receives it: Helix will treat and deliver the water to its own customers. It will also treat water for Padre Dam, Lakeside Water District and portions of Otay Water District.
For Helix customers in Rancho San Diego, this means the new supply becomes part of the blend that already passes through R.M. Levy. There is no separate pipe to anyone's house. Questions about taste, testing or timing are what the Q&A half of the October 22 session is for.
The setting fits the subject. The Water Conservation Garden was built around showing how water gets used in an East County yard. In 2027, that same water supply gets its first new source in half a century.
Halloween Comes to the Garden
The Garden has the largest share of the October calendar, and the dates fall in a clear order.
Friday, October 9. Free Friday gives free admission from 9 a.m. to noon, with garden and pollinator activities and a gourd demonstration on the schedule.
Saturday, October 17. The Garden Goes Batty runs from 5 to 7:30 p.m. The Bat Chat Show stars "The Batty Duo," Garden Director Lauren Magnuson and Community Programs Manager Yaily Gonzales, covering bats and other nighttime pollinators. Trick-or-treat stations are set up along the paths, including the Mad Scientist Lab, Dracula's Crypt and Mother Nature's Den, with a mix of candy and non-candy treats. The local youth rock band EPIDURAL plays a set of "Monster Tunes," and part of the proceeds goes to the band. Community and educational exhibitors host hands-on booths.
Thursday, October 22. The Helix presentation, 6 to 7 p.m.
Saturday, October 31. The Halloween Water District Wave-In Day runs from 9 a.m. to 4 p.m. Admission is free for qualifying water-district ratepayers and employees, along with Grossmont-Cuyamaca College students and employees. The water districts that support the Garden are giving their customers free entry on the same month they ask those customers to come learn about the new supply.
Families who want a second Halloween stop that week can go down Jamacha to the County's Spring Valley Spooktacular. It runs Friday, October 23, from 4 to 7 p.m. at the Spring Valley Community Center, 8735 Jamacha Blvd., with music, games, arts and crafts and face painting.
The Concert Series That Fills the Thursdays
Across the campus, the Ciccati Performing Arts Center has a fall run that keeps going past Halloween. Nearly every program falls on a Thursday:
- Thursday, October 8: Miles & Trane: 100 Years, featuring Marshall Hawkins
- Thursday, October 15: Middle Eastern Music Festival
- Thursday, October 22: Nathan Hubbard Trio: New Music for Vibraphone and Strings
- Tuesday, October 27: Cuyamaca Concert Band Fall Concert
- Thursday, October 29: Faculty & Staff Recital, free admission
- Thursday, November 5: Left Coast Quintet
- Thursday, November 12: Alwani Middle Eastern Orchestra
- Thursday, November 19: Rock, Pop, & Soul Ensemble, Brothers and Sisters, playing the music of the Allman Brothers Band
That is eight dates in seven weeks. Seven fall on Thursdays, and the October 27 band concert is the only Tuesday. October 29 is the free night. Combined with the Garden's schedule, the hill has something public on four of October's five Thursdays, plus two Saturdays and a Friday.
Down the Hill, Jamacha Road Is Changing Tenants
The hilltop holds the events. The Rancho San Diego Shopping Center on Jamacha Road holds the errands, and two storefronts there are changing hands this fall.
Rise Southern Biscuits & Righteous Chicken has said it will open at 2650 Jamacha Road, Suite 123, in October 2026. Its location page greets the area with "Hey East County!" and runs a giveaway for free food tied to the opening. As of early October, the restaurant is listed as coming soon, with no confirmed opening day.
A few doors down the center's address range, Burlington is planned for 2516 Jamacha Road, in the space Rite Aid used to fill. WhatNow San Diego reported the plans on September 18, 2026, based on San Diego Planning and Development Services records, and noted that Burlington had not announced an opening date.
Neither one is a redevelopment of the center. They are two tenants arriving at once. Still, a biscuit-and-chicken counter and an off-price department store will put new names on the signs along Jamacha Road during the same season the hilltop is busiest.
Getting Outside Between Events
Sweetwater Summit Regional Park also has a change for regular trail users. The County's park page says about 1.3 miles of the Sweetwater Loop and River Trail have been rerouted to protect habitat while keeping access open. The page gives no completion date, so check the County's current trail map before relying on an old route from memory.
For anyone keeping one date from all of this, it is October 22. You can learn where part of Rancho San Diego's water will come from starting in 2027, then walk across campus in time for a 7:30 p.m. concert.
Lyle and Grace have followed Rancho San Diego's calendar, shopping center and water district news for more than three decades. When it is time to sell a home in this neighborhood, that local knowledge goes into how we price it and present it. Lyle + Grace Team is ready when you are. Sell Your Place with Lyle and Grace.
