This week, a contractor named JW Fowler is closing an eastbound lane of De Portola Road just past Butterfield Stage Road, running flag operations on weekdays from 8:30 in the morning until 3:30 in the afternoon. Final paving is scheduled for September 30 through October 2, according to the City of Temecula's most recent public works report. After more than two years of intermittent lane closures along this stretch, the Eastern Municipal Water District's Southern Wine Country Sewer Project is nearly finished.
If you own acreage near this corridor, or you're weighing an offer on ranch-style property in Santiago Ranchos, that construction crew closing lanes this week is worth understanding before anyone tells you what a new sewer main means for your property. The short version is that this pipe was engineered to solve a winery problem, not a homeowner problem, and the two don't automatically overlap.
A Fifteen-Inch Pipe With Two Names
EMWD's project actually runs in two separate alignments that were built at the same time. The Northern Wine Country Phase II alignment laid about 14,000 linear feet of sewer main along Rancho California Road, Glen Oaks Road, Warren Road, and East Benton Road. The Southern alignment, the one now finishing on De Portola Road, runs roughly 23,000 linear feet between Butterfield Stage Road and Oak Mountain Road, continuing east toward Pulgas Creek Road.
The money behind it tells you who the project was designed for. EMWD reported receiving $7.5 million from Riverside County's Third District for the northern alignment and $4.1 million for the southern one, plus a $2 million grant from the U.S. Environmental Protection Agency's State and Tribal Assistance Grants program, secured through an earmark from Rep. Darrell Issa. Total estimated cost across both alignments runs about $28.5 million. Construction broke ground in February 2025 and was always slated to wrap by winter 2026, which is exactly where the current paving schedule lands it.
None of that funding came from a residential assessment. It came from county and federal infrastructure dollars aimed at a specific commercial problem in the wine country basin.
Built for a Groundwater Problem, Not a Housing Problem
EMWD has been direct about why this pipe exists. As wineries along Rancho California Road and De Portola Road added restaurants, event space, and tasting rooms, many outgrew the septic systems they were built with. A septic system sized for a small tasting counter doesn't hold up once a winery is hosting weddings and weekend crowds, and a failing system in that volume can leach into the groundwater the entire basin depends on. The district held a public meeting on the southern alignment in August 2024 at Fazeli Cellars on De Portola Road, the kind of venue choice that tells you exactly who the project's first audience was.
That's a legitimate infrastructure fix, and it protects water quality for everyone drawing from the same aquifer, homes included. But the engineering logic behind the project was winery capacity, not residential septic replacement. The pipe follows the road frontage of commercial parcels because that's where the failing systems were.
The Connection Question Predates This Construction
Here's the detail that gets lost in coverage of the ribbon-cutting version of this story. EMWD's own board records from the original Wine Country sewer buildout describe a financing structure built around a special benefit overlay. The district estimated the full build-out cost of serving the wine country area at roughly $28.8 million, with the County of Riverside contributing a portion and the rest spread across an anticipated 4,383 equivalent dwelling units, funded through what the district called a Wine Country Sewer Collection System Project Surcharge. Property owners who wanted to connect signed individual Project Participation Agreements with the district.
That's the system this new construction sits on top of. A sewer main running past your property line is not the same as a right to connect to it for free, or even at a predictable cost. Historically, tying in has meant entering a separate agreement with EMWD and paying into a surcharge structure tied to your equivalent dwelling unit count, not simply calling a plumber once the road is repaved.
This year's grant-funded construction reduces the burden on the county and on ratepayers generally. It does not appear to have replaced the underlying connection framework EMWD has used on this exact stretch of road for over a decade.
What a Santiago Ranchos Buyer or Seller Should Actually Ask
Santiago Ranchos sits inside the network of roads this project runs through. City planning materials place the area near Santiago Road, De Portola Road, Rancho California Road, and Ynez Road, the same east-side corridor where wine country and rural residential zoning overlap. Homes here were largely built with septic systems, on lots sized for privacy and outdoor space rather than dense subdivision infrastructure.
For anyone comparing this kind of acreage against a subdivision home with municipal sewer already in place, a few questions matter more than the construction headline:
- Is the specific parcel inside EMWD's mapped benefit overlay for this alignment, or simply near the road where the main was installed
- Has the seller entered, or would a buyer need to enter, a separate Project Participation Agreement to connect
- What would the surcharge or connection fee actually run per equivalent dwelling unit, and has EMWD published updated figures since the 2025 construction started
- Does the existing septic system have a current inspection and does it meet the standard for the property's original construction date, independent of whatever happens with the sewer main
None of this makes septic-dependent acreage a worse purchase. Groundwater protection benefits the whole basin, including private wells and septic fields that share the same aquifer as the wineries this project was designed to help. But a listing description that leans on "new sewer infrastructure nearby" as a selling point deserves a direct question about whether that infrastructure is actually available to the parcel in question, on what terms, and at what cost. The pipe finishing paving this week runs past a lot of front yards. Whether any specific one of them can legally and affordably tie into it is a separate conversation, and it's one worth having with the district directly rather than assuming from the construction signage.
If you're weighing acreage near this corridor, whether it's Santiago Ranchos or another De Portola Road property, I can help you get a straight answer on what's actually attached to a specific parcel before you write an offer. Reach out to Gena Elfelt and let's look at the parcel, not just the road.
