Gemperle Egg Ranch
Published drinking-water records and contacts for Gemperle Egg Ranch. System CA2400343. Review sources and dates; not a real-time water assessment.
- System ID
- CA2400343
- State or territory
- CA
- Published population served
- 55
- System type (source code)
- NTNCWS
Published records and dates
- Lead and copper monitoring summaries: 4 — 2017-07-01 – 2024-12-31
- California DDW laboratory results: 29 — 2026-01-20 – 2026-07-01
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 | 2022-01-01 – 2024-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2019-01-01 – 2021-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2018-01-01 – 2018-06-30 | 2026Q3 |
| Lead (PB90) | 0.0003 mg/L | 2017-07-01 – 2017-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| ARSENIC | 22.3 UG/L | 2026-07-01 | WELL NO. 3 / California DDW laboratory results |
| ARSENIC | 22.4 UG/L | 2026-04-29 | SP2-RES 1_AS_123TCP -INACTIVE / California DDW laboratory results |
| ARSENIC | 23.1 UG/L | 2026-04-29 | WELL NO. 3 / California DDW laboratory results |
| ARSENIC | 26.1 UG/L | 2026-04-08 | WELL NO. 3 / California DDW laboratory results |
| COMBINED URANIUM | 2.23 PCI/L | 2026-04-08 | WELL NO. 3 / California DDW laboratory results |
| 1,2,3-TRICHLOROPROPANE | < 0.005000000 UG/L | 2026-04-08 | SP2-RES 1_AS_123TCP -INACTIVE / California DDW laboratory results |
| ARSENIC | 22.7 UG/L | 2026-04-08 | SP2-RES 1_AS_123TCP -INACTIVE / California DDW laboratory results |
| GROSS ALPHA PARTICLE ACTIVITY | 4.68 PCI/L | 2026-04-08 | WELL NO. 3 / California DDW laboratory results |
| 1,2,3-TRICHLOROPROPANE | < 0.005000000 UG/L | 2026-04-08 | SP3-RESI2_AS_123TCP-INACTIVE / California DDW laboratory results |
| ARSENIC | 23.0 UG/L | 2026-04-08 | SP3-RESI2_AS_123TCP-INACTIVE / California DDW laboratory results |
| 1,2,3-TRICHLOROPROPANE | < 0.005000000 UG/L | 2026-04-08 | WELL NO. 3 / California DDW laboratory results |
| GROSS ALPHA PARTICLE ACTIVITY | < 1.410000000 PCI/L | 2026-01-26 | SP2-RES 1_AS_123TCP -INACTIVE / 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
26 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 |
|---|---|---|---|---|
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2026-04-01 – 2026-06-30 | Archived | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2026-01-01 – 2026-03-31 | Archived | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2025-10-01 – 2025-12-31 | Archived | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2025-07-01 – 2025-09-30 | Archived | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2025-04-01 – 2025-06-30 | Archived | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2025-01-01 – 2025-03-31 | Archived | Yes | 2026Q3 |
| Revised Total Coliform Rule / Maximum Contaminant Level Violation, E. coli (RTCR) | 2024-08-01 – 2024-08-31 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2019-10-01 – 2019-12-31 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2019-10-01 – 2019-12-31 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2019-07-01 – 2019-09-30 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2019-07-01 – 2019-09-30 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2019-04-01 – 2019-06-30 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2019-04-01 – 2019-06-30 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2019-01-01 – 2019-03-31 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2019-01-01 – 2019-03-31 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2018-10-01 – 2018-12-31 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2018-10-01 – 2018-12-31 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2018-07-01 – 2018-09-30 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2018-07-01 – 2018-09-30 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2018-04-01 – 2018-06-30 | Resolved | 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)
Gemperle, Michael: 209-667-2651
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.