Golden Heights Mutual Water Company
Published drinking-water records and contacts for Golden Heights Mutual Water Company. System CA4300992. Review sources and dates; not a real-time water assessment.
- System ID
- CA4300992
- State or territory
- CA
- Published population served
- 66
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 10 — 2008-01-01 – 2025-12-31
- California DDW laboratory results: 116 — 2026-04-27 – 2026-06-08
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 | 2023-01-01 – 2025-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2020-01-01 – 2022-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2017-01-01 – 2019-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2014-01-01 – 2016-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2011-01-01 – 2013-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2013-01-01 – 2013-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2010-01-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2009-01-01 – 2009-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| CONDUCTIVITY @ 25 C UMHOS/CM | 890 UMHO/CM | 2026-06-08 | WELL 02 / California DDW laboratory results |
| HYDROXIDE AS CALCIUM CARBONATE | < 10.000000000 MG/L | 2026-06-08 | WELL 02 / California DDW laboratory results |
| MERCURY | < 0.300000000 UG/L | 2026-06-08 | WELL 02 / California DDW laboratory results |
| BERYLLIUM, TOTAL | < 0.500000000 UG/L | 2026-06-08 | WELL 02 / California DDW laboratory results |
| TRANS-1,2-DICHLOROETHYLENE | < 0.500000000 UG/L | 2026-06-08 | WELL 02 / California DDW laboratory results |
| TRANS-1,3-DICHLOROPROPENE | < 0.500000000 UG/L | 2026-06-08 | WELL 02 / California DDW laboratory results |
| METHYL TERT-BUTYL ETHER | < 0.500000000 UG/L | 2026-06-08 | WELL 02 / California DDW laboratory results |
| NITRITE | < 0.100000000 MG/L | 2026-06-08 | WELL 02 / California DDW laboratory results |
| XYLENES, TOTAL | < 0.500000000 UG/L | 2026-06-08 | WELL 02 / California DDW laboratory results |
| NITRATE | 1.9 MG/L | 2026-06-08 | WELL 02 / California DDW laboratory results |
| SIMAZINE | < 1.000000000 UG/L | 2026-06-08 | WELL 02 / California DDW laboratory results |
| XYLENE, META AND PARA | < 0.500000000 UG/L | 2026-06-08 | 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
0 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
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)
Kantamaneni, Raja: 408-564-9271
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.