Monterey Mushrooms
Published drinking-water records and contacts for Monterey Mushrooms. System CA4300941. Review sources and dates; not a real-time water assessment.
- System ID
- CA4300941
- State or territory
- CA
- Published population served
- 361
- System type (source code)
- NTNCWS
Published records and dates
- Lead and copper monitoring summaries: 13 — 2000-01-01 – 2026-12-31
- California DDW laboratory results: 186 — 2026-01-13 – 2026-06-30
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 mg/L | 2024-01-01 – 2026-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2020-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0.004 mg/L | 2016-01-01 – 2018-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2013-01-01 – 2013-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2010-01-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0.00028 mg/L | 2007-01-01 – 2007-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| NITRATE | < 0.400000000 MG/L | 2026-06-30 | WEST WELL - RO TREATED / California DDW laboratory results |
| NITRATE | 0.69 MG/L | 2026-06-30 | EAST WELL - RO TREATED BLENDED MIX / California DDW laboratory results |
| TDS | 14 MG/L | 2026-06-30 | WEST WELL - RO TREATED / California DDW laboratory results |
| NITRATE | 0.48 MG/L | 2026-06-30 | EAST WELL - RO TREATED / California DDW laboratory results |
| TDS | 28 MG/L | 2026-06-30 | WEST WELL - RO TREATED BLENDED MIX / California DDW laboratory results |
| TDS | 21 MG/L | 2026-06-30 | EAST WELL - RO TREATED / California DDW laboratory results |
| TDS | 31 MG/L | 2026-06-30 | EAST WELL - RO TREATED BLENDED MIX / California DDW laboratory results |
| NITRATE | < 0.400000000 MG/L | 2026-06-30 | WEST WELL - RO TREATED BLENDED MIX / California DDW laboratory results |
| COPPER, FREE | 150 UG/L | 2026-06-16 | LCR Tap Sample / California DDW laboratory results |
| COPPER, FREE | 150 UG/L | 2026-06-16 | LCR Tap Sample / California DDW laboratory results |
| TDS | < 10.000000000 MG/L | 2026-06-16 | EAST WELL - RO TREATED / California DDW laboratory results |
| TDS | < 10.000000000 MG/L | 2026-06-16 | WEST WELL - RO TREATED / 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
7 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 Revisions / LSL Inventory | 2024-10-17 – — | Unaddressed | Yes | 2026Q3 |
| Lead and Copper Rule Revisions / LSL Reporting | 2024-10-17 – — | Unaddressed | No | 2026Q3 |
| Ground Water Rule / Notification, State | 2023-01-17 – — | Resolved | No | 2026Q3 |
| Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R | 2019-10-01 – — | Resolved | No | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2018-02-01 – 2018-02-28 | Resolved | No | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Additional Routine (RTCR) | 2018-01-01 – 2018-01-31 | Resolved | No | 2026Q3 |
| Revised Total Coliform Rule / Treatment Technique, Level 1 Assessment (RTCR) | 2017-11-01 – — | 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)
Fuller, Matthew: 831-274-5545
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.