Loch Haven Mutual Water Company
Published drinking-water records and contacts for Loch Haven Mutual Water Company. System CA4900575. Review sources and dates; not a real-time water assessment.
- System ID
- CA4900575
- State or territory
- CA
- Published population served
- 26
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 20 — 1995-01-01 – 2025-12-31
- California DDW laboratory results: 50 — 2026-01-06 – 2026-06-29
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) | 0.0088 mg/L | 2017-01-01 – 2019-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2013-01-01 – 2015-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2010-01-01 – 2012-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2007-01-01 – 2009-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2002-01-01 – 2004-12-31 | 2026Q3 |
| Lead (PB90) | 0.005 mg/L | 2002-01-01 – 2004-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| TDS | 220 MG/L | 2026-06-29 | WELL 02 - ACTIVE / California DDW laboratory results |
| TURBIDITY | 0.72 NTU | 2026-06-29 | WELL 02 - ACTIVE / California DDW laboratory results |
| ARSENIC | 18 UG/L | 2026-06-09 | WELL 02 - ACTIVE / California DDW laboratory results |
| MANGANESE | 430 UG/L | 2026-06-09 | WELL 02 - ACTIVE / California DDW laboratory results |
| ARSENIC | < 2.000000000 UG/L | 2026-06-06 | LOCH HAVEN HOME 12 - AS POU / California DDW laboratory results |
| FOAMING AGENTS (SURFACTANTS) | < 0.050000000 MG/L | 2026-05-27 | WELL 02 - ACTIVE / California DDW laboratory results |
| GROSS ALPHA PARTICLE ACTIVITY | < 1.740000000 PCI/L | 2026-05-27 | WELL 02 - ACTIVE / California DDW laboratory results |
| ALKALINITY, TOTAL | 110 MG/L | 2026-05-21 | WELL 02 - ACTIVE / California DDW laboratory results |
| NITRATE-NITRITE | < 0.400000000 MG/L | 2026-05-21 | WELL 02 - ACTIVE / California DDW laboratory results |
| ALKALINITY, CARBONATE | < 5.000000000 MG/L | 2026-05-21 | WELL 02 - ACTIVE / California DDW laboratory results |
| ODOR | < 1.000000000 TON | 2026-05-21 | WELL 02 - ACTIVE / California DDW laboratory results |
| TURBIDITY | 0.90 NTU | 2026-05-21 | WELL 02 - ACTIVE / 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
8 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 |
|---|---|---|---|---|
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2017-10-01 – 2017-12-31 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2017-07-01 – 2017-09-30 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2017-04-01 – 2017-06-30 | Resolved | Yes | 2026Q3 |
| Arsenic Rule / Maximum Contaminant Level Violation, Average | 2017-01-01 – 2017-03-31 | Resolved | Yes | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-09-01 – 1984-09-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-07-01 – 1984-07-31 | 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: 2026-10-18
Administrative contact (EPA filing)
Macphail, Kathryn: 707-696-1305
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.