Holdgrafer & Associates
Published drinking-water records and contacts for Holdgrafer & Associates. System CA4000730. Review sources and dates; not a real-time water assessment.
- System ID
- CA4000730
- State or territory
- CA
- Published population served
- 30
- System type (source code)
- NTNCWS
Published records and dates
- Lead and copper monitoring summaries: 6 — 2016-01-01 – 2024-12-31
- California DDW laboratory results: 11 — 2026-01-06 – 2026-05-06
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) | 0.015 mg/L | 2016-01-01 – 2024-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2022-01-01 – 2024-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2020-01-01 – 2022-12-31 | 2026Q3 |
| Lead (PB90) | 0.0046 mg/L | 2019-01-01 – 2019-12-31 | 2026Q3 |
| Lead (PB90) | 0.00532237 mg/L | 2018-01-01 – 2018-12-31 | 2026Q3 |
| Lead (PB90) | 0.004 mg/L | 2017-01-01 – 2017-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| 1,2,3-TRICHLOROPROPANE | < 0.005000000 UG/L | 2026-05-06 | WELL 01 / California DDW laboratory results |
| BROMOFORM | 51 UG/L | 2026-04-20 | DBPR Sample / California DDW laboratory results |
| BROMODICHLOROMETHANE | 1.7 UG/L | 2026-04-20 | DBPR Sample / California DDW laboratory results |
| TTHM | 64 UG/L | 2026-04-20 | DBPR Sample / California DDW laboratory results |
| CHLOROFORM | < 0.500000000 UG/L | 2026-04-20 | DBPR Sample / California DDW laboratory results |
| DIBROMOCHLOROMETHANE | 11 UG/L | 2026-04-20 | DBPR Sample / California DDW laboratory results |
| BROMODICHLOROMETHANE | 1.6 UG/L | 2026-01-06 | DBPR Sample / California DDW laboratory results |
| CHLOROFORM | < 0.500000000 UG/L | 2026-01-06 | DBPR Sample / California DDW laboratory results |
| BROMOFORM | 93 UG/L | 2026-01-06 | DBPR Sample / California DDW laboratory results |
| DIBROMOCHLOROMETHANE | 9.5 UG/L | 2026-01-06 | DBPR Sample / California DDW laboratory results |
| TTHM | 100 UG/L | 2026-01-06 | DBPR Sample / 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: 2026-10-17
Administrative contact (EPA filing)
Holdgrafer, Gary: 805-543-3212
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.