Public water system · CA4100575
ActiveCsp - Ano Nuevo State Park
At a glance
Csp - Ano Nuevo State Park (PWSID CA4100575) is an active transient non-community water system in San Mateo County, California. It reports serving 709 people through 6 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in November 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
709
Service connections
6
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Csp - Ano Nuevo State Park compare with other water systems in San Mateo County?
By EPA's size categories, Csp - Ano Nuevo State Park is a small system (501 to 3,300 people). San Mateo County has 51 active public water systems. Its population served is well below the county average of 15,363 people per system, and accounts for less than 0.1% of the 783,522 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 Csp - Ano Nuevo State Park is about 4.9 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. 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 Csp - Ano Nuevo State Park?
EPA lists Csp - Ano Nuevo State Park as owned by a state 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. 5 of the 51 active systems in San Mateo County (9.8%) are also owned by a state government.
Does Csp - Ano Nuevo State Park have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in November 2005. The violations listed here began between March 1983 and November 2005. By type: 1 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 as resolved and 1 as archived. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2005-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1983-03-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
All 2 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.
Csp - Ano Nuevo State Park: frequently asked questions
Who runs Csp - Ano Nuevo State Park?
Csp - Ano Nuevo State Park (PWSID CA4100575) is a transient non-community water system owned by a state government. It is regulated by the CA state drinking water program.
How many people does Csp - Ano Nuevo State Park serve?
Csp - Ano Nuevo State Park reports serving 709 people through 6 service connections in San Mateo County, California.
Where does Csp - Ano Nuevo State Park 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 Csp - Ano Nuevo State Park have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in November 2005. 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 Csp - Ano Nuevo State 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. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in November 2005. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Csp - Ano Nuevo State Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Csp - Ano Nuevo State 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 San Mateo County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Daly City | San Mateo | 104,901 | Community | Purchased surface water |
| California Water Service - San Mateo | San Mateo | 102,348 | Community | Purchased surface water |
| City of Redwood City | San Mateo | 92,819 | Community | Purchased surface water |
| California Water Service-S San Francisco | San Mateo | 64,146 | Community | Purchased surface water |
| California Water Service - Bear Gulch | San Mateo | 61,431 | Community | Surface water |
| City of San Bruno | San Mateo | 42,631 | 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, “Csp - Ano Nuevo State Park, PWSID CA4100575, California”, https://aquacensus.com/water-systems/california/csp-ano-nuevo-state-park-ca4100575 (data as of October 1, 2026).