San Gabriel Valley Water Co.-El Monte
Published drinking-water records and contacts for San Gabriel Valley Water Co.-El Monte. System CA1910039. Review sources and dates; not a real-time water assessment.
- System ID
- CA1910039
- State or territory
- CA
- Published population served
- 248000
- System type (source code)
- CWS
Published records and dates
- PFAS / lithium (EPA UCMR 5): 540 — 2025-02-28 – 2025-08-25
- Lead and copper monitoring summaries: 43 — 1992-01-01 – 2026-12-31
- California DDW laboratory results: 19247 — 2026-01-05 – 2026-07-01
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 | 2025-08-25 | Plant B24(Wells B7E,B9B,B11B,B24A,B24B) / 1910039009 |
| 4:2 FTS | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant G4 (Well G4A) / 1910039815 |
| 6:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2025-08-25 | Plant No.8 (Wells 8B, 8C, 8D, 8E & 8F) / 1910039803 |
| 8:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2025-08-25 | Plant No.8 (Wells 8B, 8C, 8D, 8E & 8F) / 1910039803 |
| 9Cl-PF3ONS | < 0.002 µg/L | 0.002 µg/L | 2025-08-25 | Plant B5 (Wells B5B, B5D, B5E & COI 5) / 1910039809 |
| ADONA | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant No.11 (Wells 11A, 11B, 11C & 11D) / 1910039806 |
| HFPO-DA | < 0.005 µg/L | 0.005 µg/L | 2025-08-25 | Plant No.2 (Wells 2D, 2E & 2F) / 1910039807 |
| NEtFOSAA | < 0.005 µg/L | 0.005 µg/L | 2025-08-25 | Plant No.2 (Wells 2D, 2E & 2F) / 1910039807 |
| NFDHA | < 0.02 µg/L | 0.02 µg/L | 2025-08-25 | Plant B6 (Wells B25A,B25B,B26A,B26B) / 1910039826 |
| NMeFOSAA | < 0.006 µg/L | 0.006 µg/L | 2025-08-25 | Plant No.1 (Wells 1B, 1D & 1E) / 1910039808 |
| PFBA | < 0.005 µg/L | 0.005 µg/L | 2025-08-25 | Plant B6 (Wells B25A,B25B,B26A,B26B) / 1910039826 |
| PFBS | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant B6 (Wells B25A,B25B,B26A,B26B) / 1910039826 |
| PFDA | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant B5 (Wells B5B, B5D, B5E & COI 5) / 1910039809 |
| PFDoA | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant W6 (Wells W6C & W6D) / 1910039846 |
| PFEESA | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant No.11 (Wells 11A, 11B, 11C & 11D) / 1910039806 |
| PFHpA | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant No.2 (Wells 2D, 2E & 2F) / 1910039807 |
| PFHpS | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant No.11 (Wells 11A, 11B, 11C & 11D) / 1910039806 |
| PFHxA | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant W6 (Wells W6C & W6D) / 1910039846 |
| PFHxS | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant W6 (Wells W6C & W6D) / 1910039846 |
| PFMBA | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant B6 (Wells B25A,B25B,B26A,B26B) / 1910039826 |
| PFMPA | < 0.004 µg/L | 0.004 µg/L | 2025-08-25 | Plant No.2 (Wells 2D, 2E & 2F) / 1910039807 |
| PFNA | < 0.004 µg/L | 0.004 µg/L | 2025-08-25 | Plant No.2 (Wells 2D, 2E & 2F) / 1910039807 |
| PFOA | < 0.004 µg/L | 0.004 µg/L | 2025-08-25 | Plant B6 (Wells B25A,B25B,B26A,B26B) / 1910039826 |
| PFOS | < 0.004 µg/L | 0.004 µg/L | 2025-08-25 | Plant W6 (Wells W6C & W6D) / 1910039846 |
| PFPeA | < 0.003 µg/L | 0.003 µg/L | 2025-08-25 | Plant B24(Wells B7E,B9B,B11B,B24A,B24B) / 1910039009 |
| PFPeS | < 0.004 µg/L | 0.004 µg/L | 2025-08-25 | Plant No.11 (Wells 11A, 11B, 11C & 11D) / 1910039806 |
| PFTA | < 0.008 µg/L | 0.008 µg/L | 2025-08-25 | Plant No.1 (Wells 1B, 1D & 1E) / 1910039808 |
| PFTrDA | < 0.007 µg/L | 0.007 µg/L | 2025-08-25 | Plant No.2 (Wells 2D, 2E & 2F) / 1910039807 |
| PFUnA | < 0.002 µg/L | 0.002 µg/L | 2025-08-25 | Plant No.2 (Wells 2D, 2E & 2F) / 1910039807 |
| lithium | < 9 µg/L | 9 µg/L | 2025-08-25 | Plant No.2 (Wells 2D, 2E & 2F) / 1910039807 |
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 | 2024-01-01 – 2026-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0.00047 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0.0014 mg/L | 2015-01-01 – 2017-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2012-01-01 – 2014-12-31 | 2026Q3 |
| Lead (PB90) | 0.002 mg/L | 2009-01-01 – 2011-12-31 | 2026Q3 |
| Lead (PB90) | 0.002 mg/L | 2006-01-01 – 2008-12-31 | 2026Q3 |
| Lead (PB90) | 0.002 mg/L | 2005-01-01 – 2005-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| 1,1-DICHLOROETHYLENE | < 0.500000000 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / California DDW laboratory results |
| 4-METHYL-2-PENTANONE | < 5.000000000 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / California DDW laboratory results |
| 1,2,4-TRIMETHYLBENZENE | < 0.500000000 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / California DDW laboratory results |
| TTHM | 0.0 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / California DDW laboratory results |
| P-ISOPROPYLTOLUENE | < 0.500000000 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / California DDW laboratory results |
| 1,1,2-TRICHLOROETHANE | < 0.500000000 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / California DDW laboratory results |
| BROMOBENZENE | < 0.500000000 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / California DDW laboratory results |
| ISOPROPYLBENZENE | < 0.500000000 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / California DDW laboratory results |
| O-XYLENE | < 0.500000000 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / California DDW laboratory results |
| XYLENES, TOTAL | < 0.500000000 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / California DDW laboratory results |
| 1,1-DICHLOROETHANE | < 0.500000000 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / California DDW laboratory results |
| N-PROPYLBENZENE | < 0.500000000 UG/L | 2026-07-01 | PLANT 2 RESERVOIR EFFL- IX, GWR,4 LOG CT / 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
3 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 |
|---|---|---|---|---|
| Ground Water Rule / Treatment Technique (SWTR and GWR) | 2019-06-01 – 2019-06-30 | Resolved | Yes | 2026Q3 |
| Ground Water Rule / Treatment Technique (SWTR and GWR) | 2018-09-01 – 2018-09-30 | Resolved | Yes | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1987-08-01 – 1987-08-31 | 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)
Nguyen, Hai-Van: 626-448-6183
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.