Vineyard Estates Mwc
Published drinking-water records and contacts for Vineyard Estates Mwc. System CA3500579. Review sources and dates; not a real-time water assessment.
- System ID
- CA3500579
- State or territory
- CA
- Published population served
- 90
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 16 — 1993-01-01 – 2023-12-31
- California DDW laboratory results: 41 — 2026-05-19 – 2026-05-19
Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.
Published testing results
Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.
“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example
Lead and copper: 90th-percentile summaries
These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile
| Substance | Published 90th percentile | Monitoring period | Source quarter |
|---|---|---|---|
| Lead (PB90) | 0 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2015-01-01 – 2017-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2012-01-01 – 2014-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2013-01-01 – 2013-12-31 | 2026Q3 |
| Lead (PB90) | 0.006 mg/L | 2012-07-01 – 2012-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2012-01-01 – 2012-06-30 | 2026Q3 |
| Copper (CU90) | 1.847 mg/L | 2011-01-01 – 2011-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| MERCURY | < 1.000000000 UG/L | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
| MANGANESE | < 10.000000000 UG/L | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
| AGGRESSIVE INDEX | 12.7 AGGR | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
| FLUORIDE | 0.28 MG/L | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
| ALUMINUM | < 50.000000000 UG/L | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
| ALKALINITY, BICARBONATE | 270 MG/L | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
| SELENIUM | < 2.000000000 UG/L | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
| LEAD | < 1.000000000 UG/L | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
| CONDUCTIVITY @ 25 C UMHOS/CM | 980 UMHO/CM | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
| ZINC | < 50.000000000 UG/L | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
| CHLORIDE | 56 MG/L | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
| POTASSIUM | 2.2 MG/L | 2026-05-19 | WELL 01 - RAW / California DDW laboratory results |
State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.
Download state records with source notes (CSV)
Published compliance history
6 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
| Rule / record | Period | Recorded status | Health-based (EPA classification) | Source quarter |
|---|---|---|---|---|
| Revised Total Coliform Rule / Maximum Contaminant Level Violation, E. coli (RTCR) | 2026-06-01 – 2026-06-30 | Archived | Yes | 2026Q3 |
| Ground Water Rule / Monitoring, Source Water (GWR) | 2024-07-04 – — | Addressed | No | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2021-08-01 – 2021-08-31 | Resolved | No | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2020-08-01 – 2020-08-31 | Resolved | No | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2017-07-01 – 2017-09-30 | Resolved | No | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2017-06-01 – 2017-06-30 | Resolved | No | 2026Q3 |
Source dates and refresh checks
A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.
- EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
- EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
- EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17
- California DDW laboratory results — last successful check: 2026-10-18
Administrative contact (EPA filing)
Hernandez, Debbie: 408-649-0023
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.