Yosemite Spring Park Util Co
Published drinking-water records and contacts for Yosemite Spring Park Util Co. System CA2010005. Review sources and dates; not a real-time water assessment.
- System ID
- CA2010005
- State or territory
- CA
- Published population served
- 5300
- System type (source code)
- CWS
Published records and dates
- PFAS / lithium (EPA UCMR 5): 540 — 2025-03-04 – 2025-11-12
- Lead and copper monitoring summaries: 21 — 1993-01-01 – 2028-12-31
- California DDW laboratory results: 497 — 2026-01-27 – 2026-07-02
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
| Substance | Published result | Reporting limit | Sample date | Sampling location |
|---|---|---|---|---|
| 11Cl-PF3OUdS | < 0.005 µg/L | 0.005 µg/L | 2025-11-12 | Well 45A / 45APOST |
| 4:2 FTS | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| 6:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2025-11-12 | Well 45A / 45APOST |
| 8:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2025-11-12 | Well 45A / 45APOST |
| 9Cl-PF3ONS | < 0.002 µg/L | 0.002 µg/L | 2025-11-12 | Well 45A / 45APOST |
| ADONA | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| HFPO-DA | < 0.005 µg/L | 0.005 µg/L | 2025-11-12 | Well 45A / 45APOST |
| NEtFOSAA | < 0.005 µg/L | 0.005 µg/L | 2025-10-08 | Well 35A / 35APOST |
| NFDHA | < 0.02 µg/L | 0.02 µg/L | 2025-11-12 | Well 45A / 45APOST |
| NMeFOSAA | < 0.006 µg/L | 0.006 µg/L | 2025-10-08 | Well 35A / 35APOST |
| PFBA | < 0.005 µg/L | 0.005 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFBS | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFDA | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFDoA | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFEESA | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFHpA | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFHpS | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFHxA | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFHxS | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFMBA | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFMPA | < 0.004 µg/L | 0.004 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFNA | < 0.004 µg/L | 0.004 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFOA | < 0.004 µg/L | 0.004 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFOS | < 0.004 µg/L | 0.004 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFPeA | < 0.003 µg/L | 0.003 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFPeS | < 0.004 µg/L | 0.004 µg/L | 2025-11-12 | Well 45A / 45APOST |
| PFTA | < 0.008 µg/L | 0.008 µg/L | 2025-10-08 | Well 35A / 35APOST |
| PFTrDA | < 0.007 µg/L | 0.007 µg/L | 2025-10-08 | Well 35A / 35APOST |
| PFUnA | < 0.002 µg/L | 0.002 µg/L | 2025-11-12 | Well 45A / 45APOST |
| lithium | 73.0 µg/L | 9 µg/L | 2025-09-09 | Well 35A / 35APOST |
Download all EPA UCMR 5 records (CSV)
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 | 2026-01-01 – 2028-12-31 | 2026Q3 |
| Lead (PB90) | 0.0084 mg/L | 2020-01-01 – 2022-12-31 | 2026Q3 |
| Lead (PB90) | 0.0039 mg/L | 2017-01-01 – 2019-12-31 | 2026Q3 |
| Lead (PB90) | 0.0092 mg/L | 2014-01-01 – 2016-12-31 | 2026Q3 |
| Lead (PB90) | 0.0058 mg/L | 2011-01-01 – 2013-12-31 | 2026Q3 |
| Lead (PB90) | 0.01 mg/L | 2008-01-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0.0052 mg/L | 2005-01-01 – 2007-12-31 | 2026Q3 |
| Lead (PB90) | 0.012 mg/L | 2004-01-01 – 2004-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| COPPER, FREE | < 50.000000000 UG/L | 2026-07-02 | LCR Tap Sample / California DDW laboratory results |
| COPPER, FREE | 81 UG/L | 2026-07-02 | LCR Tap Sample / California DDW laboratory results |
| LEAD | < 5.000000000 UG/L | 2026-07-02 | LCR Tap Sample / California DDW laboratory results |
| MANGANESE | 210 UG/L | 2026-07-02 | WELL 45A - RAW / California DDW laboratory results |
| COPPER, FREE | 98 UG/L | 2026-07-02 | LCR Tap Sample / California DDW laboratory results |
| IRON | 220 UG/L | 2026-07-02 | WELL 42A - RAW / California DDW laboratory results |
| IRON | 210 UG/L | 2026-07-02 | WELL 048A - TRT CL & CCT / California DDW laboratory results |
| MANGANESE | 240 UG/L | 2026-07-02 | WELL 37A - RAW / California DDW laboratory results |
| IRON | 240 UG/L | 2026-07-02 | WELL 01E - RAW / California DDW laboratory results |
| COPPER, FREE | < 50.000000000 UG/L | 2026-07-02 | LCR Tap Sample / California DDW laboratory results |
| COPPER, FREE | 230 UG/L | 2026-07-02 | LCR Tap Sample / California DDW laboratory results |
| LEAD | < 5.000000000 UG/L | 2026-07-02 | LCR Tap 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
23 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 / Follow-up Or Routine LCR Tap M/R | 2025-10-06 – — | Addressed | No | 2026Q3 |
| 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 |
| Inorganic Chemicals / Maximum Contaminant Level Violation, Average | 2022-10-01 – 2022-12-31 | Resolved | Yes | 2026Q3 |
| Inorganic Chemicals / Maximum Contaminant Level Violation, Average | 2022-07-01 – 2022-09-30 | Resolved | Yes | 2026Q3 |
| Inorganic Chemicals / Maximum Contaminant Level Violation, Average | 2022-04-01 – 2022-06-30 | Resolved | Yes | 2026Q3 |
| Inorganic Chemicals / Maximum Contaminant Level Violation, Average | 2022-01-01 – 2022-03-31 | Resolved | Yes | 2026Q3 |
| Inorganic Chemicals / Maximum Contaminant Level Violation, Average | 2021-10-01 – 2021-12-31 | Resolved | Yes | 2026Q3 |
| Inorganic Chemicals / Notification, State | 2021-10-01 – 2021-12-31 | Resolved | No | 2026Q3 |
| Consumer Confidence Rule / Consumer Confidence Report Complete Failure to Report | 2021-07-01 – — | Addressed | No | 2026Q3 |
| Consumer Confidence Rule / Consumer Confidence Report Inadequate Reporting | 2021-07-01 – — | Addressed | No | 2026Q3 |
| Inorganic Chemicals / Maximum Contaminant Level Violation, Average | 2021-07-01 – 2021-09-30 | Resolved | Yes | 2026Q3 |
| Inorganic Chemicals / Notification, State | 2021-07-01 – 2021-09-30 | Resolved | No | 2026Q3 |
| Inorganic Chemicals / Maximum Contaminant Level Violation, Average | 2021-04-01 – 2021-06-30 | Resolved | Yes | 2026Q3 |
| Inorganic Chemicals / Maximum Contaminant Level Violation, Average | 2021-01-01 – 2021-03-31 | Resolved | Yes | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2021-01-01 – 2021-12-31 | Resolved | No | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2021-01-01 – 2021-12-31 | Resolved | No | 2026Q3 |
| Inorganic Chemicals / Maximum Contaminant Level Violation, Average | 2020-10-01 – 2020-12-31 | Resolved | Yes | 2026Q3 |
| Inorganic Chemicals / Maximum Contaminant Level Violation, Average | 2020-07-01 – 2020-09-30 | Resolved | Yes | 2026Q3 |
| Inorganic Chemicals / Maximum Contaminant Level Violation, Average | 2020-04-01 – 2020-06-30 | Resolved | Yes | 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)
Stiglich, Paul: 559-760-3818
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.