Public water system · CA3710311
ActiveCuyamaca Sp - Paso Picacho
At a glance
Cuyamaca Sp - Paso Picacho (PWSID CA3710311) is an active transient non-community water system in San Diego County, California. It reports serving 691 people through 19 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in January 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
691
Service connections
19
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Cuyamaca Sp - Paso Picacho compare with other water systems in San Diego County?
By EPA's size categories, Cuyamaca Sp - Paso Picacho is a small system (501 to 3,300 people). San Diego County has 191 active public water systems. Its population served is well below the county average of 19,427 people per system, and accounts for less than 0.1% of the 3,710,459 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 Cuyamaca Sp - Paso Picacho is about 4.8 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 Cuyamaca Sp - Paso Picacho?
EPA lists Cuyamaca Sp - Paso Picacho 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. 16 of the 191 active systems in San Diego County (8.4%) are also owned by a state government.
Does Cuyamaca Sp - Paso Picacho have drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in January 2005. The violations listed here began between January 2000 and January 2005. By type: 4 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2005-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2003-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2001-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 5 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.
Cuyamaca Sp - Paso Picacho: frequently asked questions
Who runs Cuyamaca Sp - Paso Picacho?
Cuyamaca Sp - Paso Picacho (PWSID CA3710311) 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 Cuyamaca Sp - Paso Picacho serve?
Cuyamaca Sp - Paso Picacho reports serving 691 people through 19 service connections in San Diego County, California.
Where does Cuyamaca Sp - Paso Picacho 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 Cuyamaca Sp - Paso Picacho have any drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in January 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 Cuyamaca Sp - Paso Picacho'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 5 violations for this system; 1 is health-based, and the most recent began in January 2005. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Cuyamaca Sp - Paso Picacho's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Cuyamaca Sp - Paso Picacho 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 Diego County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| San Diego, City of | San Diego | 1,385,379 | Community | Surface water |
| Helix Water District | San Diego | 277,668 | Community | Surface water |
| Otay Water District | San Diego | 238,008 | Community | Purchased surface water |
| Sweetwater Authority | San Diego | 191,282 | Community | Surface water |
| Oceanside, City of | San Diego | 171,483 | Community | Purchased surface water |
| Escondido, City of | San Diego | 137,044 | Community | 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, “Cuyamaca Sp - Paso Picacho, PWSID CA3710311, California”, https://aquacensus.com/water-systems/california/cuyamaca-sp-paso-picacho-ca3710311 (data as of October 1, 2026).