Public water system · CA5400511
ActivePoso Park Assn
At a glance
Poso Park Assn (PWSID CA5400511) is an active transient non-community water system in Tulare County, California. It reports serving 78 people through 51 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
78
Service connections
51
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Poso Park Assn compare with other water systems in Tulare County?
By EPA's size categories, Poso Park Assn is a very small system (500 people or fewer). Tulare County has 274 active public water systems. Its population served is well below the county average of 1,700 people per system, and accounts for less than 0.1% of the 465,710 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Poso Park Assn is about half of that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. California has 3,016 active transient non-community water systems, 40% 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 Poso Park Assn?
EPA lists Poso Park Assn 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. 184 of the 274 active systems in Tulare County (67%) are also privately owned.
Does Poso Park Assn 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 Poso Park Assn. For the latest compliance status, check EPA ECHO for current compliance history.
Poso Park Assn: frequently asked questions
Who runs Poso Park Assn?
Poso Park Assn (PWSID CA5400511) is a transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Poso Park Assn serve?
Poso Park Assn reports serving 78 people through 51 service connections in Tulare County, California.
Where does Poso Park Assn 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 Poso Park Assn have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Poso Park Assn'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 Poso Park Assn's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Poso Park Assn is a 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 Tulare County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Cws - Visalia | Tulare | 148,496 | Community | Groundwater |
| Tulare, City of | Tulare | 72,241 | Community | Groundwater |
| Porterville, City of | Tulare | 63,487 | Community | Groundwater |
| Dinuba, City of | Tulare | 27,281 | Community | Groundwater |
| Lindsay, City of | Tulare | 12,659 | Community | Surface water |
| Exeter, City of | Tulare | 11,169 | 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, “Poso Park Assn, PWSID CA5400511, California”, https://aquacensus.com/water-systems/california/poso-park-assn-ca5400511 (data as of October 1, 2026).