Drinking water quality · 2021
· Verified
· PWSID CA1910081
What's in Lynwood Park Mutual Water Co. — Compton, Ca, CA tap water
Every one of the 14 core regulated contaminants reported for Lynwood Park Mutual Water Co. — Compton, Ca, CA came in below its federal limit.
- !2 open monitoring or reporting violations
- !1 contaminant within 20% of a limit
- !14 of 27 core regulated contaminants reported — 13 never appear in this report
- ✓Nothing over a federal limit
+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.
- −0 contaminants at or above a federal limit
- −4 contaminants within 20% of a limit
- −0 open health-based violations
- −6 open monitoring / reporting violations
- −4 health-based violations resolved in the last 5 years
- −8 core regulated contaminants never reported (14/27)
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
- Tetrachloroethylene86% of the federal limit4.3 ug/L · limit 5 ug/L
A likely human carcinogen; long-term exposure above the federal limit can damage the liver and kidneys.
+15 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| Chlorine Total | 1.8 mg/L | 4 mg/L |
| Gross Alpha | 4.6 pCi/L | 15 pCi/L |
| Trichloroethylene | 1.1 ug/L | 5 ug/L |
| Uranium | 4.6 ug/L | 30 ug/L |
| Nitrate | 1.4 mg/L | 10 mg/L |
| Copper | 0.12 mg/L | 1.3 mg/L |
| Fluoride | 0.34 mg/L | 4 mg/L |
| Arsenic | 0.85 ug/L | 10 ug/L |
| Barium | 0.12 mg/L | 2 mg/L |
| Lead | 0.4 ug/L | 15 ug/L |
| TTHM | 1 ug/L | 80 ug/L |
| HAA5 | Not detected ug/L | 60 ug/L |
| Escherichia coli (E. coli) | 0 | — |
| Total Coliform | 0 | 0 |
| Combined Radium | Not detected pCi/L | 5 pCi/L |
What this report doesn't tell you
13 of the 27 contaminants a community water system normally reports do not appear anywhere in Lynwood Park Mutual Water Co. — Compton, 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-based7 violations on record · most recent May 2018resolved
- Treatment technique violationHealth-based1 violation on record · most recent Nov 2017resolved
- Monitoring & reporting2 violations on record · most recent Nov 20252 open
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗