Public water system record
Ken Mar Gardens
Serves Oceano, San Luis Obispo County, CA · 84 people served
Federal records show 21 health-based violations and 2 monitoring/reporting issues for Ken Mar Gardens in the last ten years. The most serious issue in this window was a Selenium violation that EPA lists as archived, not resolved.
System profile
- Health-based violations, last 10 years
- 21
- Resolved
- 1
- Unresolved
- 0
- Archived by EPA
- 20
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 2
Key facts
- Ken Mar Gardens draws water from 1 well.
- Highest measured level in the last 10 years: Nitrate, 16 mg/L, federal limit 10 mg/L (1.6 times the limit), 2024.
- Most recent formal enforcement: compliance order (no penalty) by California, March 2024.
- Record on file since 1979, with 16 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 49 service lines.
Check whether Ken Mar Gardens serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Selenium
Contaminant limit exceeded
Measured 51 µg/L, federal limit 50 µg/L (at or just above the limit)
|
330 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 61 µg/L, federal limit 50 µg/L (1.2 times the limit)
|
330 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 61 µg/L, federal limit 50 µg/L (1.2 times the limit)
|
330 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 61 µg/L, federal limit 50 µg/L (1.2 times the limit)
|
330 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Jul 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Apr 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 16 mg/L, federal limit 10 mg/L (1.6 times the limit)
|
330 | Jan 1, 2024 | Resolved | Yes |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Oct 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Apr 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Jan 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Oct 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 0.054 mg/L, federal limit 0.05 mg/L (1.1 times the limit)
|
330 | Jul 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Apr 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Jan 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 54 µg/L, federal limit 50 µg/L (1.1 times the limit)
|
330 | Oct 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 69 µg/L, federal limit 50 µg/L (1.4 times the limit)
|
330 | Jul 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 60 µg/L, federal limit 50 µg/L (1.2 times the limit)
|
330 | Apr 5, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Selenium
Contaminant limit exceeded
Measured 60 µg/L, federal limit 50 µg/L (1.2 times the limit)
|
330 | Oct 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Nitrate
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
Full record since 1979
EPA's records for Ken Mar Gardens go back to 1979. Before October 19, 2016 they list 16 health-based violations (16 archived by EPA without a recorded fix) and 4 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 16 | 2 |
| 1990s | 0 | 1 |
| 2020s | 21 | 2 |
Most recent health-based violation before October 19, 2016: Selenium, began September 1984, Archived.
Show all 16 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Selenium
Contaminant limit exceeded
|
Sep 1, 1984 | Archived |
|
Selenium
Contaminant limit exceeded
|
Aug 1, 1984 | Archived |
|
Selenium
Contaminant limit exceeded
|
Jul 1, 1984 | Archived |
|
Selenium
Contaminant limit exceeded
|
May 1, 1984 | Archived |
|
Selenium
Contaminant limit exceeded
|
Apr 1, 1984 | Archived |
|
Selenium
Contaminant limit exceeded
|
Mar 1, 1984 | Archived |
|
Selenium
Contaminant limit exceeded
|
Jan 1, 1984 | Archived |
|
Selenium
Contaminant limit exceeded
|
Dec 1, 1983 | Archived |
|
Selenium
Contaminant limit exceeded
|
Nov 1, 1983 | Archived |
|
Selenium
Contaminant limit exceeded
|
Oct 1, 1983 | Archived |
|
Selenium
Contaminant limit exceeded
|
Aug 1, 1983 | Archived |
|
Selenium
Contaminant limit exceeded
|
Jul 1, 1983 | Archived |
|
Selenium
Contaminant limit exceeded
|
Mar 1, 1983 | Archived |
|
Selenium
Contaminant limit exceeded
|
Dec 1, 1982 | Archived |
|
Selenium
Contaminant limit exceeded
|
Nov 1, 1982 | Archived |
|
Selenium
Contaminant limit exceeded
|
Oct 1, 1982 | Archived |
Enforcement actions
California regulators took 4 formal enforcement actions against Ken Mar Gardens between 2021 and 2024. The most recent was a compliance order (no penalty) in March 2024.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 26, 2024 | California | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate |
| Jan 29, 2024 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Dec 15, 2021 | California | Compliance order (no penalty) | 16 violations (15 health-based): Selenium, Lead and Copper Rule |
| Jan 25, 2021 | California | Compliance order (no penalty) | 5 violations (5 health-based): Selenium |
What the violations mean
Selenium
20 incidentsTest results for Selenium were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about each of these violations.
Nitrate
1 incidentNitrate exceeded the federal limit
High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome
Where the water comes from
Ken Mar Gardens draws water from 1 well.
Annual water quality report
Ken Mar Gardens must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Ken Mar Gardens for a copy.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.
Certified drinking water labs by state EPA guidance for private wells