Pauma Valley Water Quality
California
According to EPA SDWIS, Pauma Valley, California is served by 10 community water systems covering about 9,697 people. The same extract lists 125 health-based violation records, most recently coded 1045 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Pauma Valley, California is delivered through 10 EPA-regulated community water systems serving an estimated 9,697 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 125 violation records across the 10 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 7 distinct EPA contaminant codes: Selenium, Nitrate, Total Haloacetic Acids (HAA5), Revised Total Coliform Rule, Nitrate-Nitrite and 2 others.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the California drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| Pauma | 5,700 | 0 | Clean |
| La Jolla Eastern | 1,076 | 0 | Clean |
| RANCHO PAUMA MUTUAL WC | 899 | 0 | Clean |
| YUIMA MUNICIPAL WATER DISTRICT IDA | 769 | 1 | Health |
| YUIMA MUNICIPAL WATER DISTRICT | 360 | 1 | Health |
| La Jolla Western | 296 | 0 | Clean |
| RANCHO ESTATES MUTUAL WATER CO. | 200 | 8 | Health |
| PAUMA VALLEY WATER COMPANY | 185 | 113 | Health |
| LAZY H MUTUAL WATER COMPANY | 142 | 0 | Clean |
| Arviso - Mobile Home Park | 70 | 2 | Health |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| PAUMA VALLEY WATER COMPANY | Selenium | 2025-07-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2025-07-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2025-04-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2025-01-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2024-10-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2024-10-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2024-07-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2024-07-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2024-07-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2024-07-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2024-04-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2024-04-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2024-04-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2024-04-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2024-01-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2024-01-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2024-01-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2024-01-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2023-10-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2023-10-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2023-10-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2023-10-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2023-10-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2023-07-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2023-04-01 |
| PAUMA VALLEY WATER COMPANY | Selenium | 2023-04-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2023-04-01 |
| PAUMA VALLEY WATER COMPANY | Nitrate | 2023-04-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-01-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-01-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-01-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-01-01 |
| PAUMA VALLEY WATER COMPANY | Total Haloacetic Acids (HAA5) | 2023-01-01 |
What are Pauma Valley's health-based records for?
Pauma Valley's health-based violation records carry 7 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Nitrate | 67 | 3 |
| Selenium | 29 | 1 |
| Total Haloacetic Acids (HAA5) | 20 | 1 |
| Nitrate-Nitrite | 4 | 1 |
| Interim Enhanced Surface Water Treatment Rule | 2 | 2 |
| Revised Total Coliform Rule | 2 | 1 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 1 | 1 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Pauma Valley, California? ▼
How many water violations does Pauma Valley have in this EPA extract? ▼
What contaminants were found in Pauma Valley water? ▼
How many water systems serve Pauma Valley? ▼
Where does Pauma Valley get its drinking water? ▼
How does Pauma Valley compare in California?
Of the 909 California places with at least one community water system on file, Pauma Valley ranks #53 by number of systems (10).
Either side of it: Oakhurst (10), Ojai (10), San Francisco (10), Sebastopol (10)
About This Data
Figures here are the current EPA SDWIS extract joined to the 10 community water systems whose service area lists Pauma Valley, ranked against the 909 California places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.