Question 1

How hard is Las Vegas valley water?

Accepted Answer

Very hard. The Las Vegas Valley Water District lists its water hardness at 280 parts per million, or 16 grains per gallon, and calls it "very hard." The minerals behind it are calcium and magnesium carried in from the Colorado River through Lake Mead. The district says hardness is a nuisance, not a health risk.

Question 2

How often do pools get drained and refilled?

Accepted Answer

Many Las Vegas pool professionals recommend draining a pool, fully or partly, every 3 to 5 years, according to the Las Vegas Valley Water District. The district says you do not need to notify it before refilling, but refilling raises your water use and bill.

Question 3

Where can I drain pool water?

Accepted Answer

To the sanitary sewer through your pool clean-out port. Draining pool water into the street, gutter or storm drain violates local codes and can bring a water-waste citation. SNWA says never to drain a pool into a septic tank. Homes on septic should ask their local jurisdiction for guidance.

Question 4

How hot does it get?

Accepted Answer

At the National Weather Service's Las Vegas station, normal daily highs in July are 103 to 105°F (1991-2020 normals).

Question 5

How much water does a pool lose to evaporation?

Accepted Answer

SNWA says the average in-ground pool loses 48.6 gallons of water per square foot per year to evaporation. For a typical Southern Nevada pool of about 470 square feet, that can be as much as 22,842 gallons a year.

Question 6

What helps?

Accepted Answer

SNWA and the Las Vegas Valley Water District say pool covers reduce evaporation by up to 90 percent, limit windblown debris and save energy. They also suggest blocking wind with plants that will not drop leaves in the water, and heating conservatively, since warmer water evaporates faster. Professionals recommend about 78°F for recreational swimming, according to both agencies.

Question 7

How do I tell evaporation from a leak?

Accepted Answer

SNWA describes a bucket test: turn off the auto-fill, set a weighted bucket on a pool step with the water inside matched to the pool level, wait several hot days, and compare. If the pool drops noticeably more than the bucket, you may have a leak worth having checked.

Question 8

Is there a size limit on new pools?

Accepted Answer

Yes. In July 2022 SNWA approved a resolution supporting a 600 square foot surface area limit on new residential pools, and the Las Vegas Valley Water District and other local jurisdictions adopted rule and code changes. The City of Las Vegas notes the limit applies to the total combined water surface area of new pools, spas and water features on a single-family parcel.

Question 9

Does the water district review my pool permit?

Accepted Answer

In the City of Las Vegas, yes. Since September 1, 2022, permits for new pools, spas and water features on single-family parcels must be approved by the Las Vegas Valley Water District before the permit is issued. The city says that review happens inside its own permitting system.

Question 10

Which office handles my permit?

Accepted Answer

It depends on where the property is. The City of Las Vegas, the City of Henderson and Clark County (for unincorporated areas) each run their own building permit process. Check which jurisdiction your address falls in before you apply.

Question 11

Unincorporated Clark County

Accepted Answer

Clark County uses a Residential Pool/Spa Permit Application (BPA-009). Its pool permit guide lists a plot plan and a structural plan stamped by a Nevada registered civil or structural engineer (licensed contractors may use an approved standard plan), and says sanitation or septic approval is required before the permit is issued. Clark County adopted the 2024 International Swimming Pool and Spa Code with Southern Nevada amendments, effective January 11, 2026.

Question 12

City of Las Vegas

Accepted Answer

The City of Las Vegas takes pool, spa and water feature applications online through its Dashboard. Residential submittals include structural plans and calculations plus a stamped and signed design package with plot, plumbing and electrical plans. The application states that building permits expire 180 days after issuance if no inspections have passed.

Question 13

City of Henderson

Accepted Answer

Henderson takes pool permit applications electronically through its DSC Online portal, with plan sets signed and sealed by the registered design professional. Its checklist asks plans to show barrier materials and heights, glazing within 60 inches of the water's edge as tempered, setbacks, and the combined surface area of all pools, spas and water features on the lot.

Question 14

Do I need HOA approval too?

Accepted Answer

Possibly. The City of Henderson's homeowner permitting guide says your HOA may require its approval before any construction starts, and suggests checking with the HOA before applying for permits because HOA rules are often more restrictive than the city's. A building permit does not take the place of HOA approval, so check your association's rules and approval steps.

Question 15

How tall must a pool barrier be?

Accepted Answer

The Southern Nevada amendments to the 2024 International Swimming Pool and Spa Code require the top of the barrier for pools at one- and two-family homes to be at least 60 inches above grade, measured on the side away from the pool. That height must continue around the whole barrier and for 3 feet out from it.

Question 16

What about gate latches?

Accepted Answer

Under the same amendments, a gate or door latch release reached from outside the barrier at a residential pool, if it is not the self-locking type, must be at least 54 inches above the ground.

Question 17

What else does Clark County recommend?

Accepted Answer

The Clark County Fire Department recommends layers of protection: non-climbable fencing, self-closing and self-latching gates that open away from the pool, alarms on doors and windows that lead to the pool, and keeping furniture away from the fence. It notes that solar or floating covers are not safety covers. For exact requirements, it says to contact your local building department.

Question 18

How do I check a contractor's license?

Accepted Answer

Use the Nevada State Contractors Board's online license search to look up a contractor by license number, business name or person's name.

Question 19

Are home inspectors licensed in Nevada?

Accepted Answer

Nevada regulates inspectors of structures through the Nevada Real Estate Division under Nevada Administrative Code Chapter 645D. Ask any inspector what credential they hold.

Las Vegas pool guide: local facts for valley homeowners

Hard water and your pool