Estero Mutual
Published drinking-water records and contacts for Estero Mutual. System CA2100519. Review sources and dates; not a real-time water assessment.
- System ID
- CA2100519
- State or territory
- CA
- Published population served
- 206
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 12 — 2000-07-01 – 2025-12-31
- California DDW laboratory results: 90 — 2026-06-17 – 2026-06-17
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 | 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) | 0.0055 mg/L | 2014-01-01 – 2016-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2011-01-01 – 2013-12-31 | 2026Q3 |
| Lead (PB90) | 0.00525 mg/L | 2010-01-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0.0055 mg/L | 2009-01-01 – 2009-12-31 | 2026Q3 |
| Lead (PB90) | 0.0075 mg/L | 2008-01-01 – 2008-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| PERFLUOROTETRADECANOIC ACID (PFTA) | < 1.700000000 NG/L | 2026-06-17 | WELL 16 / California DDW laboratory results |
| PERFLUOROHEXANE SULFONIC ACID (PFHxS) | < 1.700000000 NG/L | 2026-06-17 | WELL 16 / California DDW laboratory results |
| PERFLUOROCTANOIC ACID (PFOA) | < 1.700000000 NG/L | 2026-06-17 | WELL 12 / California DDW laboratory results |
| PERFLUORODODECANOIC ACID (PFDOA) | < 1.700000000 NG/L | 2026-06-17 | WELL 15 / California DDW laboratory results |
| NETFOSAA | < 1.700000000 NG/L | 2026-06-17 | RESERVOIR (FORMERLY STREAM 01) / California DDW laboratory results |
| PERFLUORODODECANOIC ACID (PFDOA) | < 1.700000000 NG/L | 2026-06-17 | WELL 16 / California DDW laboratory results |
| PERFLUOROCTANOIC ACID (PFOA) | < 1.700000000 NG/L | 2026-06-17 | RESERVOIR (FORMERLY STREAM 01) / California DDW laboratory results |
| PERFLUORODECANOIC ACID (PFDA) | < 1.700000000 NG/L | 2026-06-17 | WELL 15 / California DDW laboratory results |
| NMEFOSAA | < 1.700000000 NG/L | 2026-06-17 | RESERVOIR (FORMERLY STREAM 01) / California DDW laboratory results |
| PERFLUOROCTANOIC ACID (PFOA) | < 1.800000000 NG/L | 2026-06-17 | WELL 13 / California DDW laboratory results |
| PERFLUOROTETRADECANOIC ACID (PFTA) | < 1.700000000 NG/L | 2026-06-17 | WELL 12 / California DDW laboratory results |
| PERFLUOROTRIDECANOIC ACID (PFTRDA) | < 1.800000000 NG/L | 2026-06-17 | WELL 13 / 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
28 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 |
|---|---|---|---|---|
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Maximum Contaminant Level Violation, Average | 2021-10-01 – 2021-12-31 | Resolved | Yes | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Maximum Contaminant Level Violation, Average | 2021-07-01 – 2021-09-30 | Resolved | Yes | 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 | 1984-06-01 – 1984-06-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-05-01 – 1984-05-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-04-01 – 1984-04-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-03-01 – 1984-03-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-02-01 – 1984-02-29 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-01-01 – 1984-01-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-12-01 – 1983-12-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-11-01 – 1983-11-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-10-01 – 1983-10-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-09-01 – 1983-09-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-08-01 – 1983-08-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-07-01 – 1983-07-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-06-01 – 1983-06-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-05-01 – 1983-05-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-04-01 – 1983-04-30 | 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)
Brezina, John: 707-878-2400
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.