OCOTILLO OASIS, LLC
PWSID: CA3700291 · San Marcos, CA · Serves 96 people
OCOTILLO OASIS, LLC has 53 health-based violations out of 53 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.
OCOTILLO OASIS, LLC (PWSID CA3700291) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 96 people in San Marcos, CA, and is subject to primacy enforcement by the California drinking-water program.
The system's federal compliance record contains 53 total violations, with 53 classified as health-based (MCL exceedances or treatment-technique failures). 2 distinct contaminants have been cited, including Manganese, Nitrate. Recorded violations span 2013–2023.
A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the California state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- CA3700291
- System Type
- CWS
- Water Source
- Groundwater
- Location
- San Marcos, CA
- Population Served
- 96
- Health Violations
- Yes (53)
What contaminants are in this water system?
Violation History (53)
| Contaminant | Health | Date |
|---|---|---|
| Manganese | Yes | Apr 1, 2023 |
| Manganese | Yes | Apr 1, 2023 |
| Manganese | Yes | Jan 1, 2023 |
| Manganese | Yes | Jan 1, 2023 |
| Manganese | Yes | Oct 1, 2021 |
| Manganese | Yes | Oct 1, 2021 |
| Manganese | Yes | Jul 1, 2021 |
| Manganese | Yes | Jul 1, 2021 |
| Manganese | Yes | Apr 1, 2021 |
| Manganese | Yes | Apr 1, 2021 |
| Manganese | Yes | Jan 1, 2021 |
| Manganese | Yes | Jan 1, 2021 |
| Manganese | Yes | Jan 1, 2021 |
| Nitrate | Yes | Sep 3, 2019 |
| Nitrate | Yes | Sep 3, 2019 |
| Manganese | Yes | Oct 1, 2017 |
| Manganese | Yes | Oct 1, 2017 |
| Manganese | Yes | Jul 1, 2017 |
| Manganese | Yes | Jul 1, 2017 |
| Manganese | Yes | Apr 1, 2017 |
| Manganese | Yes | Apr 1, 2017 |
| Manganese | Yes | Jan 1, 2017 |
| Manganese | Yes | Jan 1, 2017 |
| Manganese | Yes | Oct 1, 2016 |
| Manganese | Yes | Oct 1, 2016 |
| Manganese | Yes | Jul 1, 2016 |
| Manganese | Yes | Jul 1, 2016 |
| Manganese | Yes | Apr 1, 2016 |
| Manganese | Yes | Apr 1, 2016 |
| Manganese | Yes | Jan 1, 2016 |
| Manganese | Yes | Jan 1, 2016 |
| Manganese | Yes | Oct 1, 2015 |
| Manganese | Yes | Oct 1, 2015 |
| Manganese | Yes | Jul 1, 2015 |
| Manganese | Yes | Jul 1, 2015 |
| Manganese | Yes | Apr 1, 2015 |
| Manganese | Yes | Apr 1, 2015 |
| Manganese | Yes | Jan 1, 2015 |
| Manganese | Yes | Jan 1, 2015 |
| Manganese | Yes | Oct 1, 2014 |
| Manganese | Yes | Oct 1, 2014 |
| Manganese | Yes | Jul 1, 2014 |
| Manganese | Yes | Jul 1, 2014 |
| Manganese | Yes | Apr 1, 2014 |
| Manganese | Yes | Apr 1, 2014 |
| Manganese | Yes | Mar 1, 2014 |
| Manganese | Yes | Mar 1, 2014 |
| Manganese | Yes | Nov 1, 2013 |
| Manganese | Yes | Nov 1, 2013 |
| Manganese | Yes | Sep 1, 2013 |
| Manganese | Yes | Sep 1, 2013 |
| Manganese | Yes | Jun 1, 2013 |
| Manganese | Yes | Jun 1, 2013 |
Frequently Asked Questions
Is OCOTILLO OASIS, LLC water safe to drink?
How many people does OCOTILLO OASIS, LLC serve?
What violations does OCOTILLO OASIS, LLC have?
What contaminants have been found in OCOTILLO OASIS, LLC water?
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About This Data
Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.