Cal Am - West San Martin
Published drinking-water records and contacts for Cal Am - West San Martin. System CA4300543. Review sources and dates; not a real-time water assessment.
- System ID
- CA4300543
- State or territory
- CA
- Published population served
- 1173
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 15 — 2000-01-01 – 2025-12-31
- California DDW laboratory results: 243 — 2026-01-21 – 2026-06-08
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) | 0.003 mg/L | 2023-01-01 – 2025-12-31 | 2026Q3 |
| Lead (PB90) | 0 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) | 0.0069 mg/L | 2011-01-01 – 2013-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2008-01-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0.0025 mg/L | 2005-01-01 – 2007-12-31 | 2026Q3 |
| Lead (PB90) | 0.0029 mg/L | 2004-01-01 – 2006-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| BROMOFORM | 3.4 UG/L | 2026-06-08 | DBPR Sample / California DDW laboratory results |
| DIBROMOCHLOROMETHANE | 1.7 UG/L | 2026-06-08 | DBPR Sample / California DDW laboratory results |
| DIBROMOCHLOROMETHANE | 1 UG/L | 2026-06-08 | DBPR Sample / California DDW laboratory results |
| BROMOFORM | 6.9 UG/L | 2026-06-08 | DBPR Sample / California DDW laboratory results |
| TTHM | 8.5 UG/L | 2026-06-08 | DBPR Sample / California DDW laboratory results |
| CHLOROFORM | < 1.000000000 UG/L | 2026-06-08 | DBPR Sample / California DDW laboratory results |
| MONOBROMOACETIC ACID | < 1.000000000 UG/L | 2026-06-08 | DBPR Sample / California DDW laboratory results |
| CHLOROFORM | < 1.000000000 UG/L | 2026-06-08 | DBPR Sample / California DDW laboratory results |
| DICHLOROACETIC ACID | < 1.000000000 UG/L | 2026-06-08 | DBPR Sample / California DDW laboratory results |
| TOTAL HALOACETIC ACIDS (HAA5) | < 1.000000000 UG/L | 2026-06-08 | DBPR Sample / California DDW laboratory results |
| TRICHLOROACETIC ACID | < 1.000000000 UG/L | 2026-06-08 | DBPR Sample / California DDW laboratory results |
| BROMODICHLOROMETHANE | < 1.000000000 UG/L | 2026-06-08 | DBPR 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
9 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 |
|---|---|---|---|---|
| Revised Total Coliform Rule / Treatment Technique, Level 1 Assessment (RTCR) | 2017-12-01 – — | Resolved | Yes | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2017-01-01 – 2017-12-31 | Resolved | No | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2017-01-01 – 2017-12-31 | Resolved | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-09-01 – 1984-09-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-08-01 – 1984-08-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-07-01 – 1984-07-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1982-10-01 – 1982-10-31 | Archived | No | 2026Q3 |
| Radionuclides and Revised Rad Rule / Monitoring, Regular | 1981-10-01 – 1982-09-30 | Archived | No | 2026Q3 |
| Radionuclides and Revised Rad Rule / Monitoring, Regular | 1980-10-30 – 1981-10-29 | 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)
Vartanian, Spencer: 831-646-3241
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.