Drinking water quality · 2022
· Verified
· PWSID CA0910007
What's in Lukins Brothers Water Company — South Lake Tahoe, Ca, CA tap water
1 contaminant in Lukins Brothers Water Company — South Lake Tahoe, Ca, CA's water sat at or above a federal limit, led by Tetrachloroethylene at 14.2x the limit.
- !1 contaminant at or above a federal limit — worst is Tetrachloroethylene at 14.2x
- !18 of 27 core regulated contaminants reported — 9 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.
- −36 contaminants at or above a federal limit
- −0 contaminants within 20% of a limit
- −0 open health-based violations
- −0 open monitoring / reporting violations
- −0 health-based violations resolved in the last 5 years
- −1 core regulated contaminants never reported (18/27)
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
- Tetrachloroethylene14.2× the federal limit0–71 ug/L · limit 5 ug/L
A likely human carcinogen; long-term exposure above the federal limit can damage the liver and kidneys.
+28 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| Arsenic | 2–5 ug/L | 10 ug/L |
| Gross Alpha | 4.39 pCi/L | 15 pCi/L |
| Lead | 0.003 mg/L | 0.015 mg/L |
| Chlorine Free | 0.37–0.48 mg/L | 4 mg/L |
| Copper | 0.12 mg/L | 1.3 mg/L |
| Nitrate | 0.25–0.65 mg/L | 10 mg/L |
| Combined Radium | 0.28 pCi/L | 5 pCi/L |
| Chromium | 2 ug/L | 100 ug/L |
| Barium | 0.015–0.02 mg/L | 2 mg/L |
| Chloride | 3.1 mg/L | — |
| Fluoride | Not detected mg/L | 4 mg/L |
| Sulfate | 4.1 mg/L | — |
| Antimony | Not detected mg/L | 0.006 mg/L |
| Beryllium | Not detected mg/L | 0.004 mg/L |
| Cadmium | Not detected mg/L | 0.005 mg/L |
| Iron | 60 ug/L | — |
| Manganese | 8 ug/L | — |
| Mercury | Not detected ug/L | 2 ug/L |
| Nickel | 1.7 ug/L | — |
| Selenium | Not detected ug/L | 50 ug/L |
| Thallium | Not detected ug/L | 2 ug/L |
| Zinc | Not detected mg/L | — |
| Escherichia coli (E. coli) | 0 | — |
| Color | 0–5 | — |
| Total Dissolved Solids | 110 mg/L | — |
| Turbidity | 0.4 | 5 |
| Gross Beta Particle Activity | 1.47 pCi/L | — |
| Uranium | 1.3–13 pCi/L | 20 pCi/L |
What this report doesn't tell you
9 of the 27 contaminants a community water system normally reports do not appear anywhere in Lukins Brothers Water Company — South Lake Tahoe, 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-based2 violations on record · most recent Apr 2008resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗