Las Vegas Water Quality Reports & Testing

Official reports, labs and how-tos

Find the official annual water quality report for your Southern Nevada utility, learn how to read it, and see where private well owners can get certified testing.

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Official Water Quality Reports for Las Vegas Area Utilities

Every community water system must send customers an annual water quality report, also called a Consumer Confidence Report (CCR), by July 1 each year, according to the U.S. EPA. The report explains where your water comes from, which regulated contaminants were detected and whether the system had any violations. Here is where each local utility posts its report.

Utility	Areas served	Source	Report link
Las Vegas Valley Water District (LVVWD)	Metropolitan Las Vegas and areas of unincorporated Clark County	About 90% Lake Mead, the rest groundwater	LVVWD water quality reports
City of Henderson	City of Henderson	Colorado River water treated by SNWA	Henderson Water Quality Report
City of North Las Vegas	City water service area	Lake Mead plus city groundwater wells	North Las Vegas water quality
City of Boulder City	Boulder City	Lake Mead water bought from SNWA	Boulder City water quality report
Great Basin Water Co. and other Pahrump systems	Parts of Pahrump	Groundwater	Great Basin Water reports

Sources for the table: LVVWD describes its service area on its About the Water District page and its supply mix in its water quality FAQ. Henderson’s 2024 Water Quality Report says the Colorado River supplies all of its water, treated at SNWA facilities. North Las Vegas lists Lake Mead and deep-aquifer groundwater on its water resources page. The Boulder City Review reports the city buys Lake Mead water from SNWA, treated at the Alfred Merritt Smith facility. Pahrump is served by several small groundwater systems; TapWaterData, which compiles EPA records, lists eight in ZIP 89060 alone.

LVVWD also publishes a more detailed Las Vegas Valley water quality summary with average values for hardness, total dissolved solids (TDS), sodium, pH and more.

How to Read a Consumer Confidence Report

Start with the source. The first pages describe where the water comes from, such as a lake or aquifer, and how vulnerable that source is to contamination (EPA).
Find the detected contaminants table. Compare the level detected with the MCL, the legal limit, and the MCLG, the health goal. EPA explains both on its drinking water regulations page.
Check for violations. A report must explain any violation, possible health effects and what the utility did about it.
Look for aesthetic numbers. Hardness, TDS and pH are covered by EPA’s non-mandatory secondary standards. For example, LVVWD’s 2026 summary lists average TDS of 591 ppm, while the secondary guideline is 500 mg/L for taste and deposits. Read more in our post on TDS in Las Vegas tap water.
Convert hardness. Divide ppm (mg/L) by 17.1 to get grains per gallon, the unit softeners use; 17.1 mg/L equals 1 gpg in Nebraska Extension’s hardness table.

How to Find Which Utility Serves You

The quickest answer is on your water bill: the utility name and account number are printed on it. Your mailing city and ZIP code are only a clue, because postal boundaries do not always match water service boundaries.

Renters: ask your landlord or HOA which utility bills the property.
No water bill: you may be on a private domestic well, which public reports do not cover.
Still unsure: EPA suggests calling your local supplier or using its CCR search tool, linked from the CCR consumer page.

Once you know your utility, look up its published hardness with our water hardness by city and ZIP tool.

Private Well Testing in Pahrump and Rural Areas

If your home runs on a private well, no utility report covers your tap. You are responsible for testing. The CDC recommends testing well water at least once a year for total coliform bacteria, nitrates, total dissolved solids and pH, and more often if the well is repaired, the water changes in taste, color or smell, someone in the home becomes pregnant or a child moves in. EPA offers similar guidance on its private wells page.

Use a certified lab: the Nevada Division of Environmental Protection keeps a list of state-certified drinking water labs on its Get Your Drinking Water Tested page. NDEP suggests asking a lab whether it is certified by the State of Nevada to analyze drinking water compliance samples.
Get the right bottle: the Southern Nevada Health District advises getting an approved sample container from the lab, since the wrong container can ruin the analysis.
Home sales: NDEP notes that when a lender requires a water test for a property transfer, it must be done by a lab certified under the Safe Drinking Water Act.

Pahrump owners can learn more in our guide to Pahrump well water. If results show iron or a rotten-egg odor, see our iron and H2S filters.

SNWA Water Conservation Resources

The Southern Nevada Water Authority runs regional conservation programs. Its Water Smart Landscapes rebate helps residents replace nonfunctional grass with drip-irrigated trees and plants, and residents must follow mandatory seasonal watering restrictions, according to SNWA. LVVWD customers can look up their assigned days on the watering schedule page.

Water Quality Reports FAQ

Is hard water listed as a violation in my report?

No. Hardness comes from calcium and magnesium carried by the Colorado River, and LVVWD says these minerals do not pose a health risk (LVVWD FAQ). It is an aesthetic issue that causes scale and spots.

When does the new report come out?

Water systems must deliver reports by July 1 each year (EPA). They usually cover monitoring from the previous calendar year.

Does the report show what comes out of my faucet?

Not exactly. Reports summarize system-wide sampling. Your home’s plumbing, fixtures and water heater can change what reaches your glass; the Boulder City Review notes lead at individual taps varies mostly with pipes and fixtures (source). A home test fills that gap.

Get Your Free Water Analysis

Not sure what is in your water or what equipment fits your home? Water Quality of Las Vegas offers a free water analysis and free estimates across the valley, from Henderson to Pahrump. Call or text 702-623-2724 any time, or request your free water analysis online.

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