Willow Creek School
Published drinking-water records and contacts for Willow Creek School. System CA4700569. Review sources and dates; not a real-time water assessment.
- System ID
- CA4700569
- State or territory
- CA
- Published population served
- 100
- System type (source code)
- NTNCWS
Published records and dates
- Lead and copper monitoring summaries: 6 — 1995-01-01 – 2020-12-31
- California DDW laboratory results: 32 — 2026-04-02 – 2026-04-02
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) | 0.0031 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2017-01-01 – 2017-12-31 | 2026Q3 |
| Lead (PB90) | 0.0019 mg/L | 2008-01-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2005-01-01 – 2005-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 1996-01-01 – 1996-06-30 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 1995-01-01 – 1995-06-30 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| 1,1-DICHLOROETHYLENE | < 0.500000000 UG/L | 2026-04-02 | WELL 02 - 1989 WELL / California DDW laboratory results |
| CARBON TETRACHLORIDE | < 0.500000000 UG/L | 2026-04-02 | WELL 02 - 1989 WELL / California DDW laboratory results |
| NITRATE | 0.91 MG/L | 2026-04-02 | WELL 02 - 1989 WELL / California DDW laboratory results |
| TOLUENE | < 0.500000000 UG/L | 2026-04-02 | WELL 02 - 1989 WELL / California DDW laboratory results |
| METHYL TERT-BUTYL ETHER | < 0.500000000 UG/L | 2026-04-02 | WELL 02 - 1989 WELL / California DDW laboratory results |
| 1,1,1-TRICHLOROETHANE | < 0.500000000 UG/L | 2026-04-02 | WELL 02 - 1989 WELL / California DDW laboratory results |
| CIS-1,2-DICHLOROETHYLENE | < 0.500000000 UG/L | 2026-04-02 | WELL 02 - 1989 WELL / California DDW laboratory results |
| TRICHLOROTRIFLUOROETHANE | < 0.500000000 UG/L | 2026-04-02 | WELL 02 - 1989 WELL / California DDW laboratory results |
| 1,1,2-TRICHLOROETHANE | < 0.500000000 UG/L | 2026-04-02 | WELL 02 - 1989 WELL / California DDW laboratory results |
| 1,2-DICHLOROPROPANE | < 0.500000000 UG/L | 2026-04-02 | WELL 02 - 1989 WELL / California DDW laboratory results |
| TRICHLOROETHYLENE | < 0.500000000 UG/L | 2026-04-02 | WELL 02 - 1989 WELL / California DDW laboratory results |
| DICHLOROMETHANE | < 0.500000000 UG/L | 2026-04-02 | WELL 02 - 1989 WELL / 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
5 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 Reporting | 2024-10-17 – — | Unaddressed | No | 2026Q3 |
| Lead and Copper Rule Revisions / LSL Inventory | 2024-10-17 – — | Unaddressed | Yes | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Treatment Technique No Certif. Operator | 2024-08-26 – — | Resolved | Yes | 2026Q3 |
| Revised Total Coliform Rule / Treatment Technique, Level 1 Assessment (RTCR) | 2019-01-01 – — | Resolved | Yes | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2018-01-01 – 2018-03-31 | Resolved | 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: 2026-10-17
Administrative contact (EPA filing)
Neville, Micah: 530-459-3313
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.