Md 73 Quartz Mountain
Published drinking-water records and contacts for Md 73 Quartz Mountain. System CA2000690. Review sources and dates; not a real-time water assessment.
- System ID
- CA2000690
- State or territory
- CA
- Published population served
- 375
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 4 — 2015-01-01 – 2026-12-31
- California DDW laboratory results: 155 — 2026-02-02 – 2026-06-01
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
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) | 0.0049 mg/L | 2024-01-01 – 2026-12-31 | 2026Q3 |
| Lead (PB90) | 0.005 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0.0037 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0.007 mg/L | 2015-01-01 – 2017-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| IRON | 1100 UG/L | 2026-06-01 | IRON/MANGANESE REMOVAL, POST STORAGE / California DDW laboratory results |
| MANGANESE | 160 UG/L | 2026-06-01 | IRON/MANGANESE REMOVAL, POST STORAGE / California DDW laboratory results |
| IRON | 6400 UG/L | 2026-05-11 | SOURCE RIDGE WELL 2 / California DDW laboratory results |
| MANGANESE | 240 UG/L | 2026-05-11 | SOURCE WILLOW POND WELL 1 / California DDW laboratory results |
| IRON | 1400 UG/L | 2026-05-11 | IRON/MANGANESE REMOVAL, POST STORAGE / California DDW laboratory results |
| MANGANESE | 330 UG/L | 2026-05-11 | SOURCE RIDGE WELL 2 / California DDW laboratory results |
| IRON | 5700 UG/L | 2026-05-11 | SOURCE WILLOW POND WELL 1 / California DDW laboratory results |
| MANGANESE | 140 UG/L | 2026-05-11 | IRON/MANGANESE REMOVAL, POST STORAGE / California DDW laboratory results |
| ANTIMONY, TOTAL | < 1.000000000 UG/L | 2026-03-09 | SOURCE RIDGE WELL 2 / California DDW laboratory results |
| COPPER, FREE | < 5.000000000 UG/L | 2026-03-09 | SOURCE WILLOW POND WELL 1 / California DDW laboratory results |
| LEAD | < 1.000000000 UG/L | 2026-03-09 | SOURCE RIDGE WELL 2 / California DDW laboratory results |
| BENZENE | < 0.500000000 UG/L | 2026-03-09 | SOURCE RIDGE WELL 2 / 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
1 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 |
|---|---|---|---|---|
| Inorganic Chemicals / Monitoring, Regular | 2016-01-01 – 2024-12-31 | 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: 2026-10-18
Administrative contact (EPA filing)
Brown, Chad: 559-675-7820
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.