Wespak, Inc.
Published drinking-water records and contacts for Wespak, Inc.. System CA5400526. Review sources and dates; not a real-time water assessment.
- System ID
- CA5400526
- State or territory
- CA
- Published population served
- 53
- System type (source code)
- NTNCWS
Published records and dates
- Lead and copper monitoring summaries: 12 — 1996-07-01 – 2025-12-31
- California DDW laboratory results: 144 — 2026-01-19 – 2026-07-20
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) | 0.0015 mg/L | 2023-01-01 – 2025-12-31 | 2026Q3 |
| Lead (PB90) | 0.013 mg/L | 2020-01-01 – 2022-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2017-01-01 – 2019-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2014-01-01 – 2016-12-31 | 2026Q3 |
| Lead (PB90) | 0.0032 mg/L | 2011-01-01 – 2013-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2008-01-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0.00046 mg/L | 2005-01-01 – 2007-12-31 | 2026Q3 |
| Lead (PB90) | 0.0025 mg/L | 2002-01-01 – 2004-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| NITRATE | 4 MG/L | 2026-07-20 | POU - HOUSE 1 - KITCHEN (NITRATE) / California DDW laboratory results |
| NITRATE | 7.9 MG/L | 2026-07-20 | POU - SHOP - TRT RO (NITRATE) / California DDW laboratory results |
| NITRATE | 1.9 MG/L | 2026-07-20 | POU - HOUSE 2 - KITCHEN (NITRATE) / California DDW laboratory results |
| NITRATE | 4.2 MG/L | 2026-07-20 | POU - OFFICE - TRT RO (NITRATE) / California DDW laboratory results |
| NITRATE | 7.1 MG/L | 2026-06-17 | POU - SHOP - TRT RO (NITRATE) / California DDW laboratory results |
| NITRATE | 4 MG/L | 2026-06-17 | POU - OFFICE - TRT RO (NITRATE) / California DDW laboratory results |
| NITRATE | 1.5 MG/L | 2026-06-17 | POU - HOUSE 2 - KITCHEN (NITRATE) / California DDW laboratory results |
| NITRATE | 3.9 MG/L | 2026-06-17 | POU - HOUSE 1 - KITCHEN (NITRATE) / California DDW laboratory results |
| 1,2,3-TRICHLOROPROPANE | < 0.005000000 UG/L | 2026-06-17 | POU - OFFICE - TRT RO (NITRATE) / California DDW laboratory results |
| NITRATE | 4.3 MG/L | 2026-05-18 | POU - HOUSE 1 - KITCHEN (NITRATE) / California DDW laboratory results |
| NITRATE | 5.7 MG/L | 2026-05-18 | POU - SHOP - TRT RO (NITRATE) / California DDW laboratory results |
| 1,2,3-TRICHLOROPROPANE | < 0.005000000 UG/L | 2026-05-18 | WELL 03 - 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
15 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 | 2025-10-01 – — | Addressed | No | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2024-01-01 – 2024-03-31 | Resolved | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2023-10-01 – 2023-12-31 | Resolved | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2023-07-01 – 2023-09-30 | Resolved | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2023-04-01 – 2023-06-30 | Resolved | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2023-01-01 – 2023-03-31 | Resolved | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2022-10-01 – 2022-12-31 | Resolved | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2022-07-01 – 2022-09-30 | Resolved | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2022-04-01 – 2022-06-30 | Resolved | Yes | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Single Sample | 2021-07-01 – 2021-09-30 | Resolved | Yes | 2026Q3 |
| Revised Total Coliform Rule / Maximum Contaminant Level Violation, E. coli (RTCR) | 2019-06-01 – 2019-06-30 | Resolved | Yes | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-09-01 – 1983-09-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-04-01 – 1983-04-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1982-11-01 – 1982-11-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1982-10-01 – 1982-10-31 | 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: 2026-10-18
Administrative contact (EPA filing)
Fidalgo, Matt: 559-897-7700
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.