Pioneer Elementary School
Published drinking-water records and contacts for Pioneer Elementary School. System CA0900111. Review sources and dates; not a real-time water assessment.
- System ID
- CA0900111
- State or territory
- CA
- Published population served
- 227
- System type (source code)
- NTNCWS
Published records and dates
- Lead and copper monitoring summaries: 12 — 2011-01-01 – 2025-12-31
- California DDW laboratory results: 54 — 2026-05-12 – 2026-05-12
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 | 2025-01-01 – 2025-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2024-01-01 – 2024-12-31 | 2026Q3 |
| Lead (PB90) | 0.0085 mg/L | 2023-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0.028 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0.012 mg/L | 2020-07-01 – 2020-12-31 | 2026Q3 |
| Copper (CU90) | 1.8 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Copper (CU90) | 1.4 mg/L | 2020-07-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0.0132 mg/L | 2020-01-01 – 2020-06-30 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| COMBINED URANIUM | 7.3 PCI/L | 2026-05-12 | WELL 2-STORAGE TANKS / California DDW laboratory results |
| PERFLUOROBUTANE SULFONIC ACID (PFBS) | 2.0 NG/L | 2026-05-12 | WELL 2-STORAGE TANKS / California DDW laboratory results |
| PERFLUOROHEPTANESULFONIC ACID (PFHPS) | < 2.000000000 NG/L | 2026-05-12 | WELL 1-MAIN PARKING LOT / California DDW laboratory results |
| PERFLUOROUNDECANOIC ACID (PFUNA) | < 2.000000000 NG/L | 2026-05-12 | WELL 1-MAIN PARKING LOT / California DDW laboratory results |
| PERFLUORODECANE SULFONIC ACID 8:2 FTS | < 5.000000000 NG/L | 2026-05-12 | WELL 2-STORAGE TANKS / California DDW laboratory results |
| PERFLUORO PFEESA | < 2.000000000 NG/L | 2026-05-12 | WELL 2-STORAGE TANKS / California DDW laboratory results |
| PERFLUOROCTANE SULFONIC ACID (PFOS) | 5.1 NG/L | 2026-05-12 | WELL 2-STORAGE TANKS / California DDW laboratory results |
| PERFLUOROHEXANE SULFONIC ACID 4:2 FTS | < 2.000000000 NG/L | 2026-05-12 | WELL 1-MAIN PARKING LOT / California DDW laboratory results |
| PERFLUOROBUTANOIC ACID (PFBA) | 5.9 NG/L | 2026-05-12 | WELL 1-MAIN PARKING LOT / California DDW laboratory results |
| PERFLUOROOCTANE SULFONIC ACID 6:2 FTS | < 5.000000000 NG/L | 2026-05-12 | WELL 1-MAIN PARKING LOT / California DDW laboratory results |
| PERFLUOROCTANOIC ACID (PFOA) | 11 NG/L | 2026-05-12 | WELL 1-MAIN PARKING LOT / California DDW laboratory results |
| HFPO-DA | < 2.000000000 NG/L | 2026-05-12 | WELL 2-STORAGE TANKS / 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
39 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 – — | Unaddressed | Yes | 2026Q3 |
| Lead and Copper Rule Revisions / LSL Reporting | 2024-10-17 – — | Unaddressed | No | 2026Q3 |
| Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R | 2024-01-01 – — | Resolved | No | 2026Q3 |
| Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R | 2022-10-01 – — | Resolved | No | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2022-08-01 – 2022-08-31 | Resolved | No | 2026Q3 |
| Consumer Confidence Rule / Consumer Confidence Report Complete Failure to Report | 2022-07-01 – — | Resolved | No | 2026Q3 |
| Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R | 2021-10-01 – — | Resolved | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 2021-01-01 – 2021-12-31 | Resolved | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 2019-01-01 – 2021-12-31 | Archived | 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)
Garrett, Christopher: 530-620-3556
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.