YERINGTON, NV · Lyon County
MASON WATER SYSTEM Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of March 5, 2002. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in Lyon County, NV.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Nevada’s official records. Always confirm current status with Nevada before making decisions based on this information.
System facts
- System ID (PWSID)
- NV0000166
- System type
- Community Water System
- Population served
- 1,389
- Service connections
- 463
- Ownership
- local government
- Water source
- groundwater (wells)
MASON WATER SYSTEM is one of 62 community water systems in Nevada in the 501 to 3,300 people size category, formerly serving 1,389 people from groundwater.
EPA's federal records list this system as inactive in 2002; the record below is historical.
As of August 1, 2026, EPA's published records contain no violations for this system.
Violation history
No violations on record for this system.
Enforcement actions
No enforcement actions on record for this system.
Last known contact on file (system is inactive)
Not on record
775-463-2729
YERINGTON, NV 89447