Public water system · CA0105010
ActiveEbrpd - Del Valle Regional Park
At a glance
Ebrpd - Del Valle Regional Park (PWSID CA0105010) is an active transient non-community water system in Alameda County, California. It reports serving 9,024 people through 44 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 1994.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
9,024
Service connections
44
Primary source
SW
Surface water
System type
TNCWS
Transient non-community water system
System record
How does Ebrpd - Del Valle Regional Park compare with other water systems in Alameda County?
By EPA's size categories, Ebrpd - Del Valle Regional Park is a medium system (3,301 to 10,000 people). Alameda County has 27 active public water systems. Its population served is well below the county average of 83,320 people per system, and accounts for 0.4% of the 2,249,634 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 Ebrpd - Del Valle Regional Park is about 63 times 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 609 California systems (8.1%) list surface water as their primary source.
Who owns and regulates Ebrpd - Del Valle Regional Park?
EPA lists Ebrpd - Del Valle Regional Park as owned by a local government. 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. 15 of the 27 active systems in Alameda County (56%) are also owned by a local government.
Does Ebrpd - Del Valle Regional Park have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 1994. The violations listed here began between December 1983 and July 1994. By type: 10 public notice, recordkeeping or other, 1 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 10 as archived and 2 as resolved. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 1994-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1994-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1984-09-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-08-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-07-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-06-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-05-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-04-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-03-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-02-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-01-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1983-12-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Ebrpd - Del Valle Regional Park: frequently asked questions
Who runs Ebrpd - Del Valle Regional Park?
Ebrpd - Del Valle Regional Park (PWSID CA0105010) is a transient non-community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Ebrpd - Del Valle Regional Park serve?
Ebrpd - Del Valle Regional Park reports serving 9,024 people through 44 service connections in Alameda County, California.
Where does Ebrpd - Del Valle Regional Park get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Ebrpd - Del Valle Regional Park have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 1994. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Ebrpd - Del Valle Regional Park'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. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 1994. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Ebrpd - Del Valle Regional Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ebrpd - Del Valle Regional Park 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 Alameda County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| East Bay MUD | Alameda | 1,442,800 | Community | Surface water |
| Alameda County Water District | Alameda | 344,000 | Community | Surface water |
| City of Hayward | Alameda | 162,954 | Community | Purchased surface water |
| Dublin San Ramon Services District | Alameda | 98,776 | Community | Purchased surface water |
| City of Pleasanton | Alameda | 76,689 | Community | Purchased surface water |
| California Water Service - Livermore | Alameda | 60,414 | Community | Purchased surface water |
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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, “Ebrpd - Del Valle Regional Park, PWSID CA0105010, California”, https://aquacensus.com/water-systems/california/ebrpd-del-valle-regional-park-ca0105010 (data as of October 1, 2026).