STOCKTON, CA · San Joaquin County

SHADOW LAKE MOBILE HOME COMMUN Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of June 9, 2009. 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 San Joaquin County, CA.

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 California’s official records. Always confirm current status with California before making decisions based on this information.

System facts

System ID (PWSID): CA3910013
System type: Community Water System
Population served: 0
Service connections: 256
Ownership: privately owned
Water source: groundwater (wells)

SHADOW LAKE MOBILE HOME COMMUN formerly served 0 people from groundwater.

EPA's federal records list this system as inactive in 2009; the record below is historical.

As of August 1, 2026, its federal record holds 7 entries between 1987 and 1990, all of which EPA lists as closed. Nothing has been added since 1990.

Of the 7, 4 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals and the Miscellaneous Other Rules.

Violation history

Notification, Public
—
No contaminant on record
January 1, 1990 – January 31, 1990
Archived
Notification, Public
—
No contaminant on record
October 1, 1988 – October 31, 1988
Archived
Monitoring, Regular
—
Fluoride
July 1, 1987 – July 31, 1987
Archived
Monitoring, Regular
—
Arsenic
July 1, 1987 – July 31, 1987
Archived
Monitoring, Regular
—
Selenium
July 1, 1987 – July 31, 1987
Archived
Monitoring, Regular
—
Nitrate
July 1, 1987 – July 31, 1987
Archived
Notification, Public
—
No contaminant on record
July 1, 1987 – July 31, 1987
Archived

Archived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 1990 – January 31, 1990	Notification, Public	—	—	Archived
October 1, 1988 – October 31, 1988	Notification, Public	—	—	Archived
July 1, 1987 – July 31, 1987	Monitoring, Regular	Fluoride	—	Archived
July 1, 1987 – July 31, 1987	Monitoring, Regular	Arsenic	—	Archived
July 1, 1987 – July 31, 1987	Monitoring, Regular	Selenium	—	Archived
July 1, 1987 – July 31, 1987	Monitoring, Regular	Nitrate	—	Archived
July 1, 1987 – July 31, 1987	Notification, Public	—	—	Archived

Archived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

No enforcement actions on record for this system.

Last known contact on file (system is inactive)

Not on record

Phone not on record

STOCKTON, CA 95212