ANSWER FIRST
Connect source water to a practical treatment goal
SNWA describes the mineral-rich Colorado River as the region’s main supply. That regional context helps explain hardness, while the City report describes public-system monitoring. A Henderson mailing address alone does not establish which supplier or source serves a property.
Source geography is not a reason to claim the municipal supply is unsafe. Separate minerals that affect scale from a named water-quality concern. Use the applicable supplier’s latest report and property measurements when choosing equipment rather than copying readings from another Southern Nevada system.
Three checks before the next step
- 01
Confirm the supplier on the bill
- 02
Read the relevant monitoring period
- 03
Measure the parameter used for equipment sizing
Compare the related treatment or service → · Try the educational decision check
Regional source mix is not a household well test
The City describes Southern Nevada's regional supply as approximately 90% Colorado River via Lake Mead and 10% valley groundwater. Those regional shares do not identify the blend at one property. Henderson describes receiving treated SNWA water from the Alfred Merritt Smith or River Mountains facilities.
A private-well property needs its own sampling and treatment design. Do not apply the municipal report, regional source percentages or a neighbor's hardness reading to a household well.
Which Henderson water information applies to your home?
- City report and dates
- The City announced its 2026 report on June 2, 2026, covering January–December 2025 monitoring. This is public-system evidence, not your tap result.
- Source and treatment
- The City describes SNWA supply treated at Alfred Merritt Smith or River Mountains and delivered by Henderson. Regional groundwater contributions are not evidence that a particular home has a private well.
- Two hardness references
- Henderson's current report webpage describes typical hardness as 304 ppm / 18 gpg. SNWA's regional home-treatment guide gives 280 ppm / 16 gpg. These are separately published guidance values; do not average them or program equipment without a property measurement.
Check the supplier on the bill and the actual service address before applying this information. A neighborhood name, ZIP code or Henderson mailing address does not establish utility service or provider coverage.
City report announcement and monitoring dates · City report webpage and hardness guidance · City source and treatment facilities · SNWA regional guidance
Reviewed 2026-10-18. Report webpage and announcement reviewed; complete downloadable report tables were not independently retrieved.
Local evidence and its limits
The City 2026 report covers 2025 monitoring. SNWA regional guidance describes the broader water context; public-system results are not a measurement at your tap. Confirm your supplier and relevant property measurements. Sources reviewed 2026-10-18.
City report publication and monitoring period · SNWA home-treatment guidance