Public water system · CA2000955
ActivePg&E Gregg Substation and Gc Yard
At a glance
Pg&E Gregg Substation and Gc Yard (PWSID CA2000955) is an active non-transient non-community water system in Madera County, California. It reports serving 29 people through 5 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
29
Service connections
5
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Pg&E Gregg Substation and Gc Yard compare with other water systems in Madera County?
By EPA's size categories, Pg&E Gregg Substation and Gc Yard is a very small system (500 people or fewer). Madera County has 202 active public water systems. Its population served is well below the county average of 915 people per system, and accounts for less than 0.1% of the 184,760 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Pg&E Gregg Substation and Gc Yard is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. California has 1,466 active non-transient non-community water systems, 20% of the state's 7,479 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,179 California systems (83%) list groundwater as their primary source.
Who owns and regulates Pg&E Gregg Substation and Gc Yard?
EPA lists Pg&E Gregg Substation and Gc Yard as privately owned. The CA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 139 of the 202 active systems in Madera County (69%) are also privately owned.
Does Pg&E Gregg Substation and Gc Yard have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Pg&E Gregg Substation and Gc Yard. For the latest compliance status, check EPA ECHO for current compliance history.
Pg&E Gregg Substation and Gc Yard: frequently asked questions
Who runs Pg&E Gregg Substation and Gc Yard?
Pg&E Gregg Substation and Gc Yard (PWSID CA2000955) is a non-transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Pg&E Gregg Substation and Gc Yard serve?
Pg&E Gregg Substation and Gc Yard reports serving 29 people through 5 service connections in Madera County, California.
Where does Pg&E Gregg Substation and Gc Yard get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Pg&E Gregg Substation and Gc Yard have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Pg&E Gregg Substation and Gc Yard's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's Safe Drinking Water Act records list no violations for this system. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Pg&E Gregg Substation and Gc Yard's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Pg&E Gregg Substation and Gc Yard is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Madera County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Madera | Madera | 66,560 | Community | Groundwater |
| Chowchilla City Water Dept | Madera | 13,916 | Community | Groundwater |
| Lupine Bass Lake | Madera | 11,930 | Transient non-community | Groundwater |
| Madera Valley Water Company | Madera | 6,494 | Community | Groundwater |
| Riverstone/Rootcreek Water District | Madera | 5,507 | Community | Groundwater |
| Yosemite Spring Park Util Co | Madera | 5,300 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Pg&E Gregg Substation and Gc Yard, PWSID CA2000955, California”, https://aquacensus.com/water-systems/california/pg-e-gregg-substation-and-gc-yard-ca2000955 (data as of October 1, 2026).