Reno's water can be soft in one zone and hard in another, and it can change from one quarter to the next. Here is what the water authority reports, and how to deal with spots.
Ask three Reno neighbors about hard water and you may get three different answers. All of them may be right. The Truckee Meadows Water Authority reports hardness by zone, and the numbers can vary a great deal by location and by season. Here is what they say and what to do about it.
Most Truckee Meadows Water Authority drinking water comes from the Truckee River, which starts at Lake Tahoe, and the rest comes from more than 90 wells. The authority adds groundwater wells to the supply from about mid April through October, which it says can change the water chemistry.
Hardness therefore differs by zone. Across the four quarters through the third quarter of 2026, the authority reported the following.
Water at 35 milligrams per liter leaves little behind. At 238, it leaves plenty. If your zone swings, you might go months without any trouble and then find white film on the shower door within weeks. Anything that forms during a harder stretch stays there, even after the water softens again.
Reno's dry air adds to the problem. With normal dew points below 40 degrees in every month, water evaporates quickly from glass and faucets, and the minerals stay exactly where the drop was sitting. That makes for sharp, distinct spots rather than the smeary film you might see in a humid place.
Check shower glass, faucet bases, sink edges, showerheads, dishwasher glassware and toilet bowls at the waterline.
Acid dissolves scale, and soap does not. White vinegar is safe on most glass and porcelain. Let it sit a few minutes, then wipe and rinse. Do not use it on marble or other natural stone, and never mix it with bleach or any other cleaner, because the combination can release dangerous gas.
Soak what you can. A vinegar-filled bag tied around a showerhead, or a soaked cloth wrapped around a faucet base, will do most of the work. Follow with an old toothbrush.
Go easy on abrasives. Scouring powder and steel wool can scratch glass and chrome, and scratches hold more minerals later.
Wipe after use. A squeegee on the door and a dry cloth over the faucet takes seconds. In a climate this dry, it has to happen right away, since water does not sit around for long.
This varies across the wider area. Incline Village drinking water comes from Lake Tahoe and is treated with ozone and ultraviolet light, which the district says does not alter its mineral quality. Fernley's municipal water supply depends on seepage from the Truckee Canal to recharge its groundwater, according to a 2021 lawsuit over lining the canal. So do not assume that Reno's numbers apply in those places; ask your own utility.
Whole-home softeners can reduce scale, although they have costs and upkeep to consider, and the shifting numbers here make it worth looking up your zone first. If your zone runs low most of the year, you might not need one.
A One-Time Deep Clean treats shower glass for hard water spots and details faucets, which usually brings a bathroom back. A Recurring House Clean then keeps up with it, since film removed every couple of weeks never gets a chance to harden. Very old deposits may have etched the glass, and no cleaning can reverse that.
The questions Reno homeowners ask most often about this topic, answered plainly.
TotalCare Cleaning will service Reno and surrounding areas with background-checked cleaners and is insured up to $1 million. Re-clean guarantee: if we missed something, tell us by the end of the next day and we come back to fix it. Beyond Clean. TotalCare.
