Key facts: Seven Hills
- Seven Hills was first proposed in the mid-1980s, cancelled in 1991, bought by Forest City in 1993 and was under development by 1996 with American Nevada [1].
- The community is home to Rio Secco Golf Club and lies about half a mile east of Henderson Executive Airport [1].
- In Henderson, the homeowner maintains the private lateral that runs from the home out to the public main, and the city maintains the main [3].
- Henderson's Lake Mead water runs close to 16 grains per gallon, well above the 180 mg/L line the USGS uses for very hard water [6][7].
How Seven Hills came to be
A long road from plan to rooftops
Seven Hills had a slow start. The project was first floated in the mid-1980s under the Sky Harbor Ranch and Cosmo World names, and that version was cancelled in 1991. Forest City bought the land in 1993, American Nevada joined in 1996, and construction was underway that same year [1].
The finished community wraps around Rio Secco Golf Club and sits roughly half a mile east of Henderson Executive Airport [1]. Streets follow the natural rise and fall of the land, which gives many homes views and also gives their plumbing a few quirks worth knowing about.
Most houses here date from the late 1990s onward. They are not old, but a quarter-century of hard water, busy kitchens and the occasional flushed wipe is plenty of time for a drain to start complaining.
Terrain and plumbing
Why do sloped Seven Hills lots change the sewer story?
Every house drain relies on gravity. On a graded hillside lot, the lateral that carries waste to the street may be longer than on a flat lot, and it may bend around terraces, retaining walls or a curving driveway. More distance and more bends simply give debris more places to settle.
Grade matters in both directions. A home that sits above the street usually drains well, while a home set below street level depends on careful pipe slope to keep moving. When a backup keeps coming back, a drain camera inspection shows exactly where the trouble sits instead of guessing.
Digging is rarely the first step. Cemented desert soil called caliche runs under much of the valley and makes excavation slow [10], so contractors tend to clean and inspect thoroughly before anyone talks about repair.
- Longer laterals give buildup more room
- Bends and fittings are common snag points
- A camera locates problems without a shovel

Calls that come in from here
Drain problems Seven Hills homeowners report
Main line backups after heavy use
A holiday house full of guests can push a long lateral past its limit, sending water up the lowest shower or tub.
Crusty shower and laundry lines
Hot water speeds mineral deposits, so these branches narrow first and catch hair and lint more easily.
Kitchen sinks that slow down
Grease and food scraps cling to rough, scaled pipe walls and gradually close the opening.
Bubbling toilets
Gurgling can point to a vent restriction or a partial clog further down the line [13].
Odor from a spare bath
A guest bathroom that sits unused in summer can lose the water in its trap and let sewer smell through.
Hard water
What does Lake Mead water leave inside Seven Hills pipes?
Henderson draws all of its water from the Colorado River by way of Lake Mead. Along the way it picks up calcium and magnesium, which are harmless to drink but add up to roughly 16 grains per gallon [6]. That sits well above the USGS threshold of 180 mg/L for very hard water [7].
Those minerals settle out as scale, and heat speeds the process [8]. In a Seven Hills home, the lines serving showers, tubs, the dishwasher and the washing machine usually carry the thickest crust. Our hard water scale guide explains how scale and everyday debris team up to shrink a pipe.
Scale alone rarely blocks a drain outright. It roughens the inside wall, and then hair, soap and grease find something to grab. Clearing the clog without addressing the crust often means the same drain slows again within months.
Picking the right tool
Common clearing methods and when they fit
The independent contractor chooses equipment after seeing the problem. This table gives a general sense of the options you may hear about.
| Method | What it does | Often used for |
|---|---|---|
| Hand auger | Short cable that hooks or breaks up a nearby clog [14] | A single sink or tub trap |
| Cable machine | Motor-driven cable with cutting heads | Branch lines and main line stoppages |
| Hydro-jetting | High-pressure water scours the pipe wall | Grease, scale and recurring clogs in longer runs |
| Camera inspection | Video of the line's interior | Finding why a backup keeps returning |
This is general information. The right approach depends on what the contractor finds in your particular line.
Beneath the floor
Slab homes and the lines you cannot see
Las Vegas Valley houses seldom have basements, and Seven Hills homes are generally built on concrete slabs [11]. That means branch drains from bathrooms and the kitchen run beneath or within the slab before they leave the house.
You will not spot a slow leak or a sagging section the way you might in a crawlspace. Signs show up indirectly: a drain that slows every few months, a damp patch of flooring, or a sour smell near a floor drain. Our guide to slab drain line clogs covers what to watch for.
A camera fed through a cleanout or a pulled toilet is usually the way to see what is happening under the slab without breaking concrete.
When water backs up
First moves during a Seven Hills sewer backup
If dirty water rises in a tub or shower when you run another fixture, these steps help limit the mess while you wait for help.
- 1
Stop running water
Pause the dishwasher, washer and showers. Every gallon you send down has to go somewhere, and right now it is coming back up.
- 2
Find the cleanout
On hillside lots it is often near the front or side of the house, sometimes tucked behind shrubs. Do not open it if the line is full; just know where it is.
- 3
Skip the chemicals
Liquid drain openers do little against a main line clog and leave caustic water for the contractor to work in.
- 4
Call and describe what you see
Say which fixtures are affected and whether the backup started after heavy use. Call to check emergency availability if water is actively rising.
Who handles what
Your lateral, the city main and local code
Seven Hills is inside Henderson city limits, so the City of Henderson Department of Utility Services provides water and sewer service [4]. The pipe from your house to the main in the street is the homeowner's responsibility; the main itself belongs to the city [3]. If you suspect the main is backing up for the whole street, the Customer Care Center at City Hall keeps a number to call outside office hours when the public sewer fails [4].
Sewage from the neighborhood travels to the city's Kurt R. Segler reclamation plant, where it is treated and sent out as reclaimed water for golf courses, parks and landscaping [5]. Given the nearby fairways, that is a fitting reminder that what goes down a Seven Hills drain eventually comes back around.
Henderson builds to a Southern Nevada-amended version of the 2024 Uniform Plumbing Code, and Henderson Permit applications go through Building and Fire Safety [9]. The contractor can check the permit question for you to a given repair.
Kitchens, bathrooms and laundry
Where everyday clogs start inside the house
Not every Seven Hills call is about the sewer lateral. Plenty start at a single fixture. The kitchen sink is the usual suspect: cooking fat poured warm turns solid as it cools, and coffee grounds and rice settle in the trap and the short run behind the cabinet. If only the kitchen is slow, kitchen drain cleaning aimed at that branch is usually enough.
Bathrooms come next. Long hair, conditioner and soap residue gather just below the shower drain, and the scale described above gives them something to cling to. A bathroom sink that drains slowly but steadily is usually a clog near the pop-up stopper rather than anything deeper.
Laundry lines are easy to forget. A washer pumps out lint, fabric fibers and detergent in large surges, and a standpipe that has been collecting scale for years can overflow when the drain cycle hits. If water spills from the box behind the washer, the branch line serving it likely needs clearing.
Golf course neighbors
Living near the fairways
Many Seven Hills homes back onto or sit near Rio Secco Golf Club [1]. Course irrigation in Henderson commonly draws on reclaimed water from the city's treatment plant [5], and the turf and trees that grow along the edges are a pleasant view.
For drains, the main thing to know is that landscaping near the house can make access to a cleanout trickier. Shrubs, rock beds and decorative borders sometimes cover the cap entirely. Knowing where yours sits before a problem starts saves time when water is already backing up.
If you have never located the cleanout, look along the front or side wall of the house for a short capped pipe rising from the ground. When you can't find one, mention that when you call; the contractor can work through a toilet flange or another access point instead.
Simple habits
Keeping a Seven Hills drain system healthy
None of these take long, and together they head off most of the calls we hear about from the neighborhood.
- Wipe pans before washingPaper towels catch grease that would otherwise coat a scaled kitchen line.
- Use hair catchersA simple screen in each shower stops the hair that clings to mineral crust.
- Only paper in toiletsWipes, even ones sold as flushable, can lodge at a bend in a long lateral.
- Run spare fixturesTurn on guest-bath taps and flush every couple of weeks so traps stay full in the heat.
- Plan routine checksHomes with past backups may benefit from preventative drain maintenance on a schedule that fits their use.
FAQ
Seven Hills drain questions on sloped, golf-course lots
Spoken questions about Seven Hills, answered briefly. Other topics: [drain FAQ hub](/faq/). Back to [other service areas](/areas/).
Why does the lowest shower in my Seven Hills home back up when the washer drains?
The lowest shower in a Seven Hills home backs up during a washer drain because water rises at the lowest opening when the main line can't carry the load. A washer releases a large volume at once, exposing partial clogs in a long lateral. Main line clearing from the cleanout is usually the answer, not work on the shower.
Does a Seven Hills home that sits below street level drain differently?
Seven Hills homes set below street level depend on careful pipe slope to keep waste moving toward the city main, while homes above the street usually drain easily. Graded lots can also mean longer laterals with more bends around terraces and driveways. When backups repeat, a camera inspection pinpoints the trouble spot instead of guessing.
How do I find a sewer cleanout hidden by landscaping near Rio Secco Golf Club?
Sewer cleanouts on Seven Hills homes near Rio Secco Golf Club [1] are typically short capped pipes along the front or side wall, but shrubs, rock beds or borders sometimes cover them. Check those areas before a problem starts. If you can't find one, tell the contractor, who can locate it or advise on adding one.
Is a Seven Hills house from the late 1990s old enough for drain trouble?
Seven Hills houses from the late 1990s, when construction got underway [1], are old enough to carry noticeable hard-water scale. Henderson's water runs some 16 grains per gallon [6][7], and heated lines like showers and laundry collect crust fastest [8]. Scale rarely blocks pipes alone, but it gives grease and hair something to grip.
Who handles a sewer backup affecting a whole street in Seven Hills?
Street-wide sewer backups in Seven Hills point to the public main, which the City of Henderson maintains [3]. The city's Customer Care Center at City Hall keeps an evening and weekend contact for sewer trouble [4]. The pipe from each house to that main is the homeowner's responsibility, so a backup in one home alone usually calls for a local drain contractor.
Why do toilets in my Seven Hills home bubble or gurgle?
Bubbling toilets in Seven Hills homes usually point to a restricted vent or a partial clog further down the line. Vents let air into the drain system so water flows smoothly and traps stay full [13]. If gurgling comes with slow drains elsewhere, the lateral may be involved; a contractor can clear it with a snake [14] and check the vent.
What should I do first when sewage backs up in a Seven Hills home?
During a Seven Hills sewage backup, stop running water and flushing toilets first, then check whether neighbors are affected. If they are, contact the City of Henderson's after-hours sewer line [4]; if not, call a local drain contractor and mention where your cleanout is. Keep children and pets away from contaminated water until the line is cleared.
Sources and citations
- [1]Wikipedia — Seven Hills, Henderson
- [2]Wikipedia — Henderson, Nevada
- [3]City of Henderson — Water and Sewer Laterals
- [4]City of Henderson — Utility Services Customer Care Center
- [5]City of Henderson — Wastewater treatment
- [6]City of Henderson — 2024 Water Quality Report
- [7]USGS — Water hardness FAQ
- [8]Wikipedia — Hard water
- [9]City of Henderson — Uniform Plumbing Code
- [10]UNLV — Engineering with heavily cemented soils in Las Vegas
- [11]Las Vegas Advisor — Why Las Vegas houses don't have basements
- [12]Wikipedia — North American monsoon
- [13]Wikipedia — Drain-waste-vent system
- [14]Wikipedia — Plumber's snake





