Chp - Mission Grade Scales
Published drinking-water records and contacts for Chp - Mission Grade Scales. System CA0110800. Review sources and dates; not a real-time water assessment.
- System ID
- CA0110800
- State or territory
- CA
- Published population served
- 1800
- System type (source code)
- TNCWS
Published records and dates
- California DDW laboratory results: 28 — 2026-01-14 – 2026-04-16
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
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| PERFLUORODECANOIC ACID (PFDA) | < 2.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / California DDW laboratory results |
| PERFLUOROCTANOIC ACID (PFOA) | < 2.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / California DDW laboratory results |
| PERFLUORODODECANOIC ACID (PFDOA) | < 2.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / California DDW laboratory results |
| HFPO-DA | < 2.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / California DDW laboratory results |
| PERFLUOROPENTANOIC ACID (PFPEA) | < 2.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / California DDW laboratory results |
| PERFLUOROHEXANE SULFONIC ACID 4:2 FTS | < 2.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / California DDW laboratory results |
| PERFLUOROHEPTANESULFONIC ACID (PFHPS) | < 2.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / California DDW laboratory results |
| PERFLUORO PFEESA | < 2.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / California DDW laboratory results |
| PERFLUOROOCTANE SULFONIC ACID 6:2 FTS | < 5.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / California DDW laboratory results |
| PERFLUOROPENTANESULFONIC ACID (PFPES) | < 2.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / California DDW laboratory results |
| PERFLUOROBUTANE SULFONIC ACID (PFBS) | < 2.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / California DDW laboratory results |
| PERFLUOROHEXANE SULFONIC ACID (PFHxS) | < 2.000000000 NG/L | 2026-04-16 | MISSION GRADE WELL #1 / 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 |
|---|---|---|---|---|
| Revised Total Coliform Rule / Maximum Contaminant Level Violation, E. coli (RTCR) | 2023-08-01 – 2023-08-31 | 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)
Hayes, Neil: 510-614-2665
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.