Hot Tub & Pool Service in West Valley City, Utah

The usual Utah hot tub advice is simple: the water is hard, expect scale. That would be the wrong advice for West Valley City. West Valley has the softest published fill water of anywhere we serve. The problem here is a different one, and if you have ever lifted the cover and found rust-colored water or a brown stain creeping up the shell, you already know what it is.

First, the water is not that hard

Granger-Hunter Improvement District, which serves West Valley City, reports an average hardness of 176 milligrams per liter, about 10 grains per gallon. The district calls that moderately hard to hard, and by national standards it is. But compare it to the rest of the valley. Murray City averages 194. Salt Lake City’s City Creek plant runs 212, and the city’s wells go far higher. West Valley comes in under all of them.

The reason is where the water comes from. Roughly three-quarters of Granger-Hunter’s supply is treated surface water bought from Jordan Valley Water: Deer Creek and Jordanelle reservoirs, the upper Provo River, and the Weber-Provo diversion. Mountain reservoir water is low in dissolved mineral. Only about a quarter of West Valley’s supply comes from the district’s own six deep wells, with a seventh under construction.

So a West Valley hot tub filled on a typical day starts with moderate calcium hardness, close to the low end of the spa target range. Scale is possible but not the thing to worry about. That quarter of the supply from the deep wells is.

The real issue: iron and manganese

Granger-Hunter’s wells draw from groundwater that is low in oxygen. Water like that carries dissolved iron and manganese, and sometimes ammonia, in a form that is completely invisible. In the pipe, it is clear. The district’s own water quality report describes what happens next: on contact with air or chlorine, the iron and manganese oxidize into insoluble particles and the water turns yellow, brown, or rust-colored with a metallic taste. Ammonia plus chlorine produces the sharp “swimming pool” smell.

A hot tub is a machine for doing exactly that. It aerates the water with jets and doses it with chlorine. If the fill water carried dissolved iron, the tub will oxidize it within hours. What you see is discolored water, a rust or brown tint, and over time a stain on the shell at the waterline and around the jets where the particles settle.

The district knows this. It has built one groundwater treatment plant serving three of its deep wells and is building a second for two more, specifically to remove iron and manganese before the water leaves the well field. As those come online, the problem should get rarer. It is not gone yet, and the timing of your fill relative to which wells are running still matters.

Staining is not scale

This distinction matters because the two problems have opposite fixes.

Scale is calcium coming out of the water and hardening onto the shell. It is white or gray, it feels rough, and it happens when calcium and pH are high. The fix involves bringing calcium down and keeping pH in range.

Metal staining is iron or manganese particles settling onto the shell. It is yellow, brown, rust, or in the case of manganese, gray-black. It happens when the fill water carried dissolved metal, regardless of calcium. Adding sanitizer, which is the instinct when water looks wrong, makes it worse: chlorine is what oxidizes the metal in the first place.

If a West Valley tub has colored water and someone’s first move is to shock it, they have misread the problem.

What we do about it

On a routine visit, we test the five water factors as always, but on a West Valley tub we also look at the color of the water and the shell before touching anything. Discoloration on a tub that tests fine on sanitizer and pH points at metal.

If the water has already turned, the fix is usually a drain, clean, and refill. The old water goes, the shell gets cleaned while it is empty, which is when iron staining comes off most easily, and the tub is refilled. We test the fresh water before balancing it.

If the shell is stained, a deep clean while the tub is drained handles what a standard drain-and-wipe does not. Stains caught within a few weeks come off. Stains that have set for months are harder, and we will say so.

Going forward, topping up in small amounts, letting the fresh water circulate through the filter before the jets run hard, and keeping the filter clean all reduce how much oxidized metal ends up on the shell instead of in the filter.

West Valley neighborhoods on the route

We run through Granger and Hunter, the two historic communities the district is named for, the established streets along 3500 South and Redwood Road, the Stonebridge and Lake Park subdivisions on the west side, and the homes around Decker Lake and West Ridge. West Valley is the second-largest city in Utah and has a lot of above-ground pools, which we service at the same $110 pool rate.

We are based in Millcreek, and West Valley is a straight shot across the valley on I-215 or 3500 South. Thursday and Friday routes.

Services and prices

Routine hot tub maintenance $75 a visit. Pool and swim spa maintenance $110. Drain, clean, and refill $275 flat. Deep cleaning and repair hourly, quoted after we look. Routine visits include chemicals. The drain and refill and the hourly work bill chemicals, materials, and parts at cost.

Book a visit or call. If your water has a color, tell us which one.