Houses and pipes in St. George
Downtown St. George, around the historic temple and tabernacle, has homes from the 1870s through the 1950s, some with old clay or cast iron lines.
Neighborhoods built from the 1970s through the 1990s around Dixie Drive and the Bloomington area have slab ranches.
Most of St. George, including Little Valley, Desert Canyons and the areas toward Washington and Santa Clara, has been built since the 2000s.
Many homes are vacation rentals or seasonal homes for retirees from colder states.
St. George sits in the Mojave Desert transition zone with hot summers, mild winters and very hard water.
Who handles what in St. George
The City of St. George runs the sewer collection system and the St. George Regional Water Reclamation Facility. St. George property owners maintain the sewer lateral from the house to the public main.
Drain problems St. George homes see most
| Problem | Why it happens here |
|---|---|
| Mineral scale | Very hard water |
| Wipes and grease | Vacation rentals |
| Roots from landscape trees | Older neighborhoods |
| Cast iron corrosion | 1970s and 1980s slab homes |
| Gypsum and expansive soils | Parts of the city |
| Construction debris | New subdivisions |
St. George drains through the year
Summer temperatures above 100 degrees drive tree roots toward water, and monsoon storms in late summer can flood washes.
Mild winters bring snowbirds and seasonal residents, increasing use in many homes.
What drain cleaning costs in St. George
| Job | Typical range |
|---|---|
| Sink, tub or toilet cleared | $130–$270 |
| Main line cleared from a cleanout | $195–$440 |
| Root cutting | $255–$590 |
| Hydro jetting | $335–$805 |
| Sewer camera inspection | $135–$280 |
| Cast iron under-slab assessment | $240–$520 |
Newer homes clear quickly. Heavy scale, cast iron under older slabs and rental lines full of wipes take longer.
Before the plumber arrives
- 1
Pause water use
Hold off on laundry and showers.
- 2
Vacation rental?
Ask guests to stop flushing until the line is checked.
- 3
Seasonal home?
If the house sat empty for months, dried-out traps and settled debris can cause problems on return.
- 4
Find the cleanout
Usually near the front of the house, often in a gravel landscape bed.
Dixie and downtown
St. George was settled in 1861 by Mormon pioneers sent to grow cotton, earning the region the name Utah's Dixie. The historic downtown around the temple and tabernacle has pioneer homes and buildings from the late 1800s, along with midcentury houses. Old clay and cast iron lines with roots from mature shade trees are common there.
Hard water
St. George's water is among the hardest in Utah, and mineral scale builds up quickly in drain lines, water heaters and fixtures. Kitchen and laundry lines narrow over time and catch grease. Jetting removes scale and grease together, and a water softener reduces buildup.
Vacation rentals
St. George is a gateway to Zion National Park and a popular destination for golf, Ironman events and winter getaways. Many homes are vacation rentals hosting large groups. A family reunion or a tournament team can fill a rental for a week, and wipes and cooking grease follow them down the drains. Owners who post signs and jet lines between peak seasons avoid many calls.
Snowbirds
Many St. George homes belong to retirees who spend winters here and summers elsewhere. Homes left empty for months can have dried-out traps and settled debris. When the owners return, a burst of water use can reveal problems.
A typical St. George call
In March, during spring break, a group renting a 2005 home in Little Valley finds the toilets and tub backing up. The plumber opens the yard cleanout and pulls out a wad of wipes and paper towels about twenty feet out, along with scale buildup. After jetting, the line runs clear.
1970s and 1980s homes
Neighborhoods around Dixie Drive and Bloomington built from the 1970s through the 1990s have slab ranches with cast iron or early plastic lines. Cast iron under the slab scales and corrodes in the hard water and alkaline soil.
Soils
Parts of St. George sit on gypsum-rich and expansive clay soils that can dissolve or swell, causing foundations and buried pipe to shift. Lines can crack or sag over time.
Summer heat and roots
Summer temperatures regularly exceed 100 degrees. Irrigated landscape trees send roots far looking for water, and cracked joints attract them.
Monsoon storms
Late summer monsoon storms can drop heavy rain quickly, flooding washes and streets. Storm water can enter sewers through damaged cleanouts.
The Virgin and Santa Clara rivers can rise fast during these storms, and neighborhoods near them have flooded in the past.
Restaurants and events
St. George's restaurants downtown and along St. George Boulevard and Red Cliffs Drive serve crowds during Ironman races, the Huntsman World Senior Games and spring break. Kitchens keep interceptors pumped before peak events.
New construction
St. George is one of the fastest-growing areas in the country, and new subdivisions sometimes have construction debris in lines. If a new home has drain trouble in its first year, check with the builder.
Retirement communities
St. George has many 55-and-older communities, like SunRiver and the developments around Green Valley, with homes built since the 1990s. Many have shared HOA-managed sewer lines before reaching the city main, and residents spend part of the year elsewhere. When a shared line clogs, the HOA usually handles it. Homeowners returning after months away should run water in every fixture to refill traps and watch for slow drains.
Washington and Santa Clara
Neighboring Washington and Santa Clara have grown alongside St. George, with older pioneer-era cores and large new subdivisions. Older homes there have the same hard water and root issues, while newer homes mostly see grease and wipes. Each city manages its own sewer system.
Red rock and caliche
Much of St. George sits on sandstone, lava rock and caliche, a cemented layer of desert soil. Digging to repair a sewer line can mean breaking rock, which adds time and cost. Lining and pipe bursting work inside the existing pipe path and avoid most of that work.
Water softeners and drains
Because the water is so hard, many St. George homes have water softeners that flush salty brine into a drain during regeneration. If a laundry standpipe or utility sink overflows at night, the softener discharge may be the cause, not a clog in the main line.
When you call
Share the neighborhood, the home's age, whether it's a rental or seasonal home and which drains are slow.
St. George ZIP codes
- 84770
- 84790
St. George drain questions
Who handles sewer in St. George?+
The City of St. George. The private lateral is the owner's.
Does hard water affect drains?+
Yes. St. George's water is very hard, and scale builds up inside pipes over time.
Do vacation rentals have more clogs?+
Usually, yes. Visitors flush things owners never would, and large groups cooking for a week put a lot of grease down the sink.
Should St. George buyers get a sewer scope?+
Yes, especially for homes built before 1995 and former rentals.
