Public water system · CA2710300
ActiveCsp-Pfeiffer Big Sur
At a glance
Csp-Pfeiffer Big Sur (PWSID CA2710300) is an active community water system in Monterey County, California. It reports serving 585 people through 128 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in July 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
585
Service connections
128
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Csp-Pfeiffer Big Sur compare with other water systems in Monterey County?
By EPA's size categories, Csp-Pfeiffer Big Sur is a small system (501 to 3,300 people). Monterey County has 307 active public water systems. Its population served is about 62% below the county average of 1,552 people per system, and accounts for 0.1% of the 476,419 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active community water system reports serving 6,703 people, so Csp-Pfeiffer Big Sur is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. California has 2,997 active 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-Pfeiffer Big Sur?
EPA lists Csp-Pfeiffer Big Sur 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. 10 of the 307 active systems in Monterey County (3.3%) are also owned by a state government.
Does Csp-Pfeiffer Big Sur have drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in July 2023. The violations listed here began between March 1995 and July 2023. By type: 4 monitoring and reporting, 1 public notice, recordkeeping or other, 1 monitoring and 1 contaminant level above the legal limit. The contaminants or rules involved are Consumer Confidence Rule, Revised Total Coliform Rule, Lead and Copper Rule and Total trihalomethanes (TTHM). EPA lists 7 as resolved. 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 |
|---|---|---|---|---|
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2019-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2003-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-03-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 7 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-Pfeiffer Big Sur: frequently asked questions
Who runs Csp-Pfeiffer Big Sur?
Csp-Pfeiffer Big Sur (PWSID CA2710300) is a community water system owned by a state government. It is regulated by the CA state drinking water program.
How many people does Csp-Pfeiffer Big Sur serve?
Csp-Pfeiffer Big Sur reports serving 585 people through 128 service connections in Monterey County, California.
Where does Csp-Pfeiffer Big Sur 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-Pfeiffer Big Sur have any drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in July 2023. 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-Pfeiffer Big Sur'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 7 violations for this system; 1 is health-based, and the most recent began in July 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Csp-Pfeiffer Big Sur's water quality report?
As a community water system, Csp-Pfeiffer Big Sur must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Monterey County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Cwsc Salinas | Monterey | 123,679 | Community | Groundwater |
| Cal Am Water Company - Monterey | Monterey | 92,450 | Community | Groundwater under influence of surface water |
| Alco Water Service | Monterey | 56,253 | Community | Groundwater |
| Marina Coast Water District | Monterey | 38,377 | Community | Groundwater |
| Soledad, City of | Monterey | 19,455 | Community | Groundwater |
| Greenfield, City of | Monterey | 18,967 | 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, “Csp-Pfeiffer Big Sur, PWSID CA2710300, California”, https://aquacensus.com/water-systems/california/csp-pfeiffer-big-sur-ca2710300 (data as of October 1, 2026).