Drinking water quality · 2021
· Verified
· PWSID CA1900038
What's in Lancaster Park Mobile Home Park — Lancaster, Ca, CA tap water
Only 6 of 27 core regulated contaminants were reported for Lancaster Park Mobile Home Park — Lancaster, Ca, CA. What was measured is not clean — but most of the picture is missing.
- !1 contaminant at or above a federal limit — worst is Arsenic at 2.3x
- !6 of 27 core regulated contaminants reported — 21 never appear in this report
- ✓No open federal violations
+How this score is calculated
Every system starts at 100. Points come off for measured levels, for the federal violation record, and for how much of the core regulated set the utility actually reported. All three inputs are the utility's own published numbers and EPA's own records.
- −26 contaminants at or above a federal limit
- −0 contaminants within 20% of a limit
- −0 open health-based violations
- −0 open monitoring / reporting violations
- −6 health-based violations resolved in the last 5 years
- −20 core regulated contaminants never reported (6/27)
A 90–100 · B 80–89 · C 70–79 · D 60–69 · F below 60. A system reporting under a third of the core set is capped at C however clean its numbers look — a short report is not a clean bill of health.
Full grading methodology, constant for constant →What to worry about
- Arsenic2.3× the federal limit23 ug/L · limit 10 ug/L
A known human carcinogen; long-term exposure is linked to skin, bladder, and lung cancer.
Higher than 95% of CA systems that report it · higher than 95% of U.S. systems
+7 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| Nitrate | Not detected mg/L | 10 mg/L |
| Calcium | 23 mg/L | — |
| Chromium, Hexavalent | Not detected ug/L | — |
| Copper | Not detected mg/L | 1.3 mg/L |
| Lead | Not detected ug/L | 15 ug/L |
| Escherichia coli (E. coli) | 0 | 0 |
| Alkalinity | 180 mg/L | — |
What this report doesn't tell you
21 of the 27 contaminants a community water system normally reports do not appear anywhere in Lancaster Park Mobile Home Park — Lancaster, Ca, CA's data. Absent is not the same as absent-from-the-water — it means nobody published a number.
+Full detail: PFAS testing, water source, historical monitoring, and the federal violation record
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Maximum contaminant level exceededHealth-based40 violations on record · most recent Jun 2025resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗