Water quality · NV
Nevada Water Quality (2026)
Last updated: June 2026
Most population served by Colorado River water via Lake Mead. Arsenic and chromium-6 are recurring concerns in groundwater-served communities.
Our Nevada coverage focuses on the 4 metros below. Each city page lists the utility's water source, hardness in grains per gallon, contaminants flagged above EWG's stricter health guideline, and the whole-house system that fits that specific profile, not a generic recommendation copied across the state.
Common contaminants flagged across Nevada
Across the Nevada cities we cover, these are the contaminants most often reported above EWG's health guideline. None exceed federal EPA legal limits.
- arsenic
- Arsenic
- Chromium-6
- arsenic (some sources)
Cities we cover in Nevada
| City | Hardness | Flagged above EWG guideline | Best fit |
|---|---|---|---|
| Henderson | ~16 | arsenic | Softener + carbon |
| Las Vegas | ~16 (very hard) | Arsenic, Chromium-6 | Softener + carbon filter |
| North Las Vegas | ~16 | arsenic | Softener + carbon |
| Reno | - | arsenic (some sources) | Softener + carbon |
Recommended systems for Nevada
Most Nevada homes benefit from a layered setup: whole-house carbon for chlorine and taste, a softener if your CCR shows hardness above 7 gpg, and a certified under-sink RO at the kitchen tap if lead, PFAS, nitrate or arsenic are flagged.
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Find your system →Nevada water FAQ
+Is Nevada tap water safe to drink?
Yes, by federal standards: the cities on this page all meet every EPA legal limit. The contaminants we flag sit above EWG's stricter, non-enforceable health guideline, which is the benchmark most homeowners use when deciding whether to filter further at home.
+Why is Nevada water hard?
Hardness comes from calcium and magnesium picked up as water moves through local geology. In Nevada, the values vary city by city, see the table above for your metro. Anything above 7 grains per gallon is considered hard and is where a softener starts to make a noticeable difference.
+Do I need a softener or a filter in Nevada?
Different problems, different tools. A whole-house carbon filter handles chlorine, chloramine and taste. A softener handles scale from hard water. Many Nevada homes benefit from both, and a kitchen-tap RO if lead, PFAS or nitrate appear on your CCR.
Sources: EWG; USGS