Plumbers in Las Vegas, NV

The grey pipe in the walls

If there is one thing worth checking in a Las Vegas house of a certain age, it is what the supply pipe is made of.

Tract homes built across the valley between roughly 1978 and 1995 were commonly plumbed with polybutylene, a grey plastic pipe that was inexpensive, quick to install and, as it turned out, poorly suited to what was going to happen to it. It degrades in reaction to chloramines in municipal water, and it becomes brittle in desert heat. The combination means it fails without warning.

The part homeowners most need to understand is that it does not fail in one place. Because the degradation is chemical and thermal rather than mechanical, the entire system ages together. Once you have one leak, you are likely facing a systemic issue, and further leaks will follow. Repairing a single failure buys time and changes nothing about the condition of the rest of the pipe.

Identifying it is straightforward. Look for grey plastic supply pipe, typically half an inch or three quarters, often visible at the water heater, near the main shutoff, or where pipe enters from a wall. In a house from that era, finding it is a reason to plan a repipe rather than to wait for the next leak to make the decision for you.

Leaks the desert hides

The second distinctly Las Vegas problem is not what goes wrong but how long it goes unnoticed.

In a wetter climate, an underground leak announces itself. Water reaches the surface, the ground stays damp, something looks wrong. Here the dry desert soil absorbs escaping water before it gets that far, so a leak can run undetected for months while damaging foundations and saturating the caliche beneath the property.

That makes indirect detection more important here than almost anywhere. Turn off every fixture and appliance in the house and watch the water meter. If it moves, water is leaving the system somewhere, and in this climate that could have been true for a long time already. A water bill that rose without any change in how the house is used is the other reliable signal. A warm patch on the floor points at a hot line under the slab.

Slab leaks concentrate in older housing. They are more common in homes built before 1995, particularly around Downtown Las Vegas, Paradise and East Las Vegas, where copper piping was standard beneath the slab. That copper faces two attacks at once: very hard water scaling and corroding it internally, and caliche expanding when wet and shrinking as it dries, which stresses it mechanically.

Seventeen grains, and what it costs

The Las Vegas Valley Water District publishes the hardness figure directly: 291 parts per million, which is 17 grains per gallon, categorised as very hard. It comes from Colorado River water carried into Lake Mead, so it is a property of the source rather than of treatment.

You will find claims online that valley hardness runs 20 to 30 grains. The utility’s own number is the one to work from, and 17 grains is quite hard enough to matter.

Where it costs money is the water heater. Mineral settles out of hot water and forms sediment on the tank floor, sitting between the burner and the water it is supposed to heat. On a tankless unit, scale builds on the heat exchanger. Both shorten equipment life meaningfully.

The maintenance cadence local plumbers recommend reflects that: flush a tank heater once or twice a year, and descale a tankless unit annually. That is more frequent than the general advice you will read, and the mineral load is the reason.

A climate working from both ends

Las Vegas plumbing gets tested at both extremes of the year. January nights can dip below freezing, which catches people out in a city where most homes have no freeze protection at all, so exposed lines and hose bibs split on the rare cold night. Summers regularly hold above 110 degrees, which is hard on materials and is part of why polybutylene becomes brittle here faster than it would in a milder market.

Between the freeze risk, the heat, the 17 grain water and year-round hot water demand, water heater service is among the most consistent plumbing calls in the valley. Every plumber we dispatch in Las Vegas is licensed through the Nevada State Contractors Board and pulls the permits the work requires.