Graves School Ws
Published drinking-water records and contacts for Graves School Ws. System CA2702180. Review sources and dates; not a real-time water assessment.
- System ID
- CA2702180
- State or territory
- CA
- Published population served
- 56
- System type (source code)
- NTNCWS
Published records and dates
- Lead and copper monitoring summaries: 10 — 2012-01-01 – 2026-06-30
- California DDW laboratory results: 48 — 2026-01-12 – 2026-06-23
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) | 0.007 mg/L | 2026-01-01 – 2026-06-30 | 2026Q3 |
| Lead (PB90) | 0.006 mg/L | 2025-07-01 – 2025-12-31 | 2026Q3 |
| Lead (PB90) | 0.019 mg/L | 2023-01-01 – 2025-12-31 | 2026Q3 |
| Lead (PB90) | 0.031 mg/L | 2025-01-01 – 2025-06-30 | 2026Q3 |
| Lead (PB90) | 0.048 mg/L | 2024-07-01 – 2024-12-31 | 2026Q3 |
| Lead (PB90) | 0.012 mg/L | 2024-01-01 – 2024-06-30 | 2026Q3 |
| Lead (PB90) | 0.019 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0.009 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| LEAD | < 1.000000000 UG/L | 2026-06-23 | WELL 02 / California DDW laboratory results |
| COPPER, FREE | < 5.000000000 UG/L | 2026-06-23 | WELL 02 / California DDW laboratory results |
| SILICA | 44 MG/L | 2026-06-23 | WELL 02 / California DDW laboratory results |
| SILICA | 44 MG/L | 2026-06-23 | WQP - KITCHEN FAUCET / California DDW laboratory results |
| TOTAL RADIUM FOR NTNC PER §64442(B)(3) | < 0.410000000 PCI/L | 2026-04-06 | WELL 02 / California DDW laboratory results |
| SILICA | 44 MG/L | 2026-03-03 | WQP - KITCHEN FAUCET / California DDW laboratory results |
| SILICA | 44 MG/L | 2026-03-03 | WELL 02 / California DDW laboratory results |
| CONDUCTIVITY @ 25 C UMHOS/CM | 2110 UMHO/CM | 2026-03-03 | WELL 02 / California DDW laboratory results |
| CONDUCTIVITY @ 25 C UMHOS/CM | 2080 UMHO/CM | 2026-03-03 | WQP - KITCHEN FAUCET / California DDW laboratory results |
| ORTHOPHOSPHATE | < 0.050000000 MG/L | 2026-03-03 | WQP - KITCHEN FAUCET / California DDW laboratory results |
| ORTHOPHOSPHATE | < 0.050000000 MG/L | 2026-03-03 | WELL 02 / California DDW laboratory results |
| CALCIUM | 184 MG/L | 2026-03-03 | WQP - KITCHEN FAUCET / 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
2 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 |
|---|---|---|---|---|
| Lead and Copper Rule Revisions / LSL Inventory | 2024-10-17 – — | Addressed | Yes | 2026Q3 |
| Lead and Copper Rule Revisions / LSL Reporting | 2024-10-17 – — | Addressed | 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)
Smith, David: 831-422-6392
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.