Oak Heights W & R Co Inc
Published drinking-water records and contacts for Oak Heights W & R Co Inc. System CA2700665. Review sources and dates; not a real-time water assessment.
- System ID
- CA2700665
- State or territory
- CA
- Published population served
- 105
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 6 — 2009-01-01 – 2026-12-31
- California DDW laboratory results: 397 — 2026-01-07 – 2026-07-13
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 | 2024-01-01 – 2026-12-31 | 2026Q3 |
| 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) | 0.023 mg/L | 2015-01-01 – 2017-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2012-01-01 – 2014-12-31 | 2026Q3 |
| Lead (PB90) | 0.006 mg/L | 2009-01-01 – 2011-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| NITRATE | 11.6 MG/L | 2026-07-13 | TANK-BLENDING / California DDW laboratory results |
| PH | 6.9 PH | 2026-06-17 | WELL 02 / California DDW laboratory results |
| AGGRESSIVE INDEX | 10.3 AGGR | 2026-06-17 | WELL 02 / California DDW laboratory results |
| FLUORIDE | < 0.100000000 MG/L | 2026-06-17 | WELL 01 / California DDW laboratory results |
| ZINC | < 30.000000000 UG/L | 2026-06-17 | WELL 01 / California DDW laboratory results |
| BARIUM | 44 UG/L | 2026-06-17 | WELL 02 / California DDW laboratory results |
| CYANIDE | < 4.000000000 UG/L | 2026-06-17 | WELL 03 / California DDW laboratory results |
| NITRATE-NITRITE | 6.9 MG/L | 2026-06-17 | WELL 02 / California DDW laboratory results |
| FOAMING AGENTS (SURFACTANTS) | < 0.050000000 MG/L | 2026-06-17 | WELL 03 / California DDW laboratory results |
| CHROMIUM | 10.8 UG/L | 2026-06-17 | WELL 01 / California DDW laboratory results |
| ALKALINITY, BICARBONATE | 74 MG/L | 2026-06-17 | WELL 02 / California DDW laboratory results |
| CYANIDE | < 4.000000000 UG/L | 2026-06-17 | WELL 02 / 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
28 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 |
|---|---|---|---|---|
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2024-10-01 – 2024-12-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2024-07-01 – 2024-09-30 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2024-04-01 – 2024-06-30 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2024-01-01 – 2024-03-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2023-10-01 – 2023-12-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2023-01-01 – 2023-03-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2022-10-01 – 2022-12-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2022-07-01 – 2022-09-30 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2022-04-01 – 2022-06-30 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2022-01-01 – 2022-03-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2021-01-01 – 2021-03-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2020-10-01 – 2020-12-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2020-04-01 – 2020-06-30 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2020-01-01 – 2020-03-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2019-10-01 – 2019-12-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2015-07-01 – 2015-09-30 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2014-07-01 – 2014-09-30 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2014-04-01 – 2014-06-30 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2014-01-01 – 2014-03-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2013-11-01 – 2013-11-30 | Archived | Yes | 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)
Melone, Brett: 831-869-8400
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.