Donner Summit Public Utility District
Published drinking-water records and contacts for Donner Summit Public Utility District. System CA2910016. Review sources and dates; not a real-time water assessment.
- System ID
- CA2910016
- State or territory
- CA
- Published population served
- 310
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 11 — 1993-01-01 – 2023-12-31
- California DDW laboratory results: 163 — 2026-01-14 – 2026-06-18
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) | 0.00465 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2020-01-01 – 2022-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2016-01-01 – 2018-12-31 | 2026Q3 |
| Lead (PB90) | 0.008 mg/L | 2008-01-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0.0027 mg/L | 2006-01-01 – 2006-12-31 | 2026Q3 |
| Lead (PB90) | 0.011 mg/L | 2003-01-01 – 2005-12-31 | 2026Q3 |
| Lead (PB90) | 0.011 mg/L | 2003-01-01 – 2003-12-31 | 2026Q3 |
| Lead (PB90) | 0.0027 mg/L | 1996-01-01 – 1998-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| ALKALINITY, BICARBONATE | 5.8 MG/L | 2026-06-18 | LAKE ANGELA - RAW / California DDW laboratory results |
| HYDROXIDE AS CALCIUM CARBONATE | < 5.000000000 MG/L | 2026-06-18 | LAKE ANGELA - RAW / California DDW laboratory results |
| ALKALINITY, CARBONATE | < 5.000000000 MG/L | 2026-06-18 | LAKE ANGELA - RAW / California DDW laboratory results |
| ALKALINITY, TOTAL | 5.8 MG/L | 2026-06-18 | LAKE ANGELA - RAW / California DDW laboratory results |
| CARBON, TOTAL | 2.11 MG/L | 2026-06-18 | LAKE ANGELA - RAW / California DDW laboratory results |
| CARBON, TOTAL | 1.28 MG/L | 2026-06-18 | LAKE ANGELA - TREATED / California DDW laboratory results |
| PERFLUOROHEXANE SULFONIC ACID 4:2 FTS | < 0.551000000 NG/L | 2026-06-03 | LAKE ANGELA - RAW / California DDW laboratory results |
| PERFLUOROHEXANE SULFONIC ACID (PFHxS) | < 0.647000000 NG/L | 2026-06-03 | LAKE ANGELA - RAW / California DDW laboratory results |
| PERFLUOROPENTANESULFONIC ACID (PFPES) | < 0.684000000 NG/L | 2026-06-03 | LAKE ANGELA - RAW / California DDW laboratory results |
| PERFLUOROUNDECANOIC ACID (PFUNA) | < 0.449000000 NG/L | 2026-06-03 | LAKE ANGELA - RAW / California DDW laboratory results |
| PERFLUOROCTANOIC ACID (PFOA) | < 0.563000000 NG/L | 2026-06-03 | LAKE ANGELA - RAW / California DDW laboratory results |
| PERFLUOROHEPTANOIC ACID (PFHPA) | < 0.530000000 NG/L | 2026-06-03 | LAKE ANGELA - RAW / 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 |
|---|---|---|---|---|
| Surface Water Treatment Rule / Treatment Technique (SWTR and GWR) | 2022-10-01 – 2022-10-31 | Resolved | Yes | 2026Q3 |
| Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R | 2019-10-01 – — | 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: 2026-10-18
Administrative contact (EPA filing)
Palmer, Steven: 530-426-3456
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.