Knoll Enterprises
PWSID: CA3600504
This system currently has unresolved violations for: 5200. These violations mean contaminant levels exceeded EPA limits or required treatment was not performed.
This system has more violations on record than 99% of water systems in California.
Violation trend: 11.2 per year over the last 5 years, similar to 13.0 per year in the previous 5.
System Details
| Population Served | 500 |
| Service Connections | 25 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Private |
| Status | Active |
| City | Ludlow |
| EPA ZIP on File | 92338 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|---|---|---|
| Lead (90th percentile) | 0.0041 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
2 Active Violations
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 5200 | TT | 2024-10-17 | Yes | Open |
| 5200 | RPT | 2024-10-17 | Open |
Violation History (129 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 4006 | MCL Measured: 23.20 PCI/L (limit: 20.00 PCI/L) | 2025-04-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0260 MG/L (limit: 0.0100 MG/L) | 2025-04-01 | Yes | Acknowledged |
| 4006 | MCL Measured: 22.20 PCI/L (limit: 20.00 PCI/L) | 2025-01-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0258 MG/L (limit: 0.0100 MG/L) | 2025-01-01 | Yes | Acknowledged |
| 1032 | MCL Measured: 0.1800 MG/L (limit: 0.0500 MG/L) | 2025-01-01 | Yes | Acknowledged |
| 4006 | MCL Measured: 21.70 PCI/L (limit: 20.00 PCI/L) | 2024-10-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0246 MG/L (limit: 0.0100 MG/L) | 2024-10-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0248 MG/L (limit: 0.0100 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0248 MG/L (limit: 0.0100 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 4006 | MCL Measured: 21.00 PCI/L (limit: 20.00 PCI/L) | 2024-07-01 | Yes | Acknowledged |
| 4006 | MCL Measured: 21.00 PCI/L (limit: 20.00 PCI/L) | 2024-07-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0245 MG/L (limit: 0.0100 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0245 MG/L (limit: 0.0100 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0244 MG/L (limit: 0.0100 MG/L) | 2024-01-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0244 MG/L (limit: 0.0100 MG/L) | 2024-01-01 | Yes | Acknowledged |
| 1040 | MR | 2024-01-01 | Major | Acknowledged |
| 1005 | MCL Measured: 0.0309 MG/L (limit: 0.0100 MG/L) | 2023-10-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0309 MG/L (limit: 0.0100 MG/L) | 2023-10-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0318 MG/L (limit: 0.0100 MG/L) | 2023-07-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0318 MG/L (limit: 0.0100 MG/L) | 2023-07-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 31.80 UG/L (limit: 10.00 UG/L) | 2023-07-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0317 MG/L (limit: 0.0100 MG/L) | 2023-04-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0317 MG/L (limit: 0.0100 MG/L) | 2023-04-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 31.65 UG/L (limit: 10.00 UG/L) | 2023-04-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0317 MG/L (limit: 0.0100 MG/L) | 2023-01-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0317 MG/L (limit: 0.0100 MG/L) | 2023-01-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 31.65 UG/L (limit: 10.00 UG/L) | 2023-01-01 | Yes | Acknowledged |
| 4006 | MCL Measured: 41.80 PCI/L (limit: 20.00 PCI/L) | 2022-10-01 | Yes | Acknowledged |
| 4006 | MCL Measured: 41.80 PCI/L (limit: 20.00 PCI/L) | 2022-10-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0315 MG/L (limit: 0.0100 MG/L) | 2022-10-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 31.50 UG/L (limit: 10.00 UG/L) | 2022-10-01 | Yes | Acknowledged |
| 4006 | MCL Measured: 41.80 PCI/L (limit: 20.00 PCI/L) | 2022-07-01 | Yes | Acknowledged |
| 4006 | MCL Measured: 41.80 PCI/L (limit: 20.00 PCI/L) | 2022-07-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0314 MG/L (limit: 0.0100 MG/L) | 2022-07-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 31.40 UG/L (limit: 10.00 UG/L) | 2022-07-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 31.40 UG/L (limit: 10.00 UG/L) | 2022-07-01 | Yes | Acknowledged |
| 7000 | Other | 2022-07-01 | Returned to Compliance | |
| 4006 | MCL Measured: 41.80 PCI/L (limit: 20.00 PCI/L) | 2022-04-01 | Yes | Acknowledged |
| 4006 | MCL Measured: 41.80 PCI/L (limit: 20.00 PCI/L) | 2022-04-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0312 MG/L (limit: 0.0100 MG/L) | 2022-04-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 31.15 UG/L (limit: 10.00 UG/L) | 2022-04-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 31.15 UG/L (limit: 10.00 UG/L) | 2022-04-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0310 MG/L (limit: 0.0100 MG/L) | 2022-01-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 31.00 UG/L (limit: 10.00 UG/L) | 2022-01-01 | Yes | Acknowledged |
| 4006 | MCL Measured: 31.00 PCI/L (limit: 20.00 PCI/L) | 2022-01-01 | Yes | Acknowledged |
| 1040 | MR | 2022-01-01 | Major | Acknowledged |
| 1040 | MR | 2022-01-01 | Major | Acknowledged |
| 1041 | MR | 2022-01-01 | Major | Acknowledged |
| 1005 | MCL Measured: 0.0240 MG/L (limit: 0.0100 MG/L) | 2021-10-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 24.00 UG/L (limit: 10.00 UG/L) | 2021-10-01 | Yes | Acknowledged |
Showing 50 of 127 historical violations.
Understanding This Water System's Record
Knoll Enterprises is a community water system water system that draws from groundwater sources and serves a population of 500 in Ludlow, California. This page shows its complete compliance history as reported to the EPA's Safe Drinking Water Information System (SDWIS), the federal database that tracks every public water system in the United States.
What Do These Violations Mean?
Health-based violations mean the system exceeded an EPA maximum contaminant level (MCL) or failed to provide required treatment. These indicate potential health risks from contaminants like lead, arsenic, bacteria, nitrates, or disinfection byproducts. Non-health-based violations involve monitoring, reporting, or procedural requirements — the system missed a testing deadline or failed to notify customers, but contaminant levels were not necessarily unsafe.
What Should You Do?
Your water utility is required to publish an annual Consumer Confidence Report (CCR) that details test results and any violations. If your system has active health-based violations, consider a certified water filter rated for the specific contaminants involved. The contaminant guides on this site explain health risks and filter options for common pollutants. For the most current results, contact your water utility directly — EPA data can lag weeks or months behind real-time testing.