Drinking water quality · 2023
· Verified
· PWSID CA3610008
What's in Big Bear City Csd — Big Bear City, Ca, CA tap water
1 contaminant in Big Bear City Csd — Big Bear City, Ca, CA's water sat at or above a federal limit, led by Perfluorohexanesulfonic acid at 1.2x the limit.
- !1 contaminant at or above a federal limit — worst is Perfluorohexanesulfonic acid at 1.2x
- !1 contaminant within 20% of a limit
- !13 of 27 core regulated contaminants reported — 14 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.
- −15 contaminants at or above a federal limit
- −4 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
- −9 core regulated contaminants never reported (13/27)
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
- Perfluorohexanesulfonic acid1.2× the federal limit11.75 ng/L · limit 10 ng/L
Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.
Higher than 80% of CA systems that report it · higher than 85% of U.S. systems
- PFOS88% of the federal limit3.52 ng/L · limit 4 ng/L
Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.
Higher than 40% of CA systems that report it · higher than 50% of U.S. systems
+32 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| Fluoride | 0.85 mg/L | 4 mg/L |
| Gross Alpha | 1.82 pCi/L | 15 pCi/L |
| Nitrate | 1.2 mg/L | 10 mg/L |
| Turbidity | 0.11 NTU | 1 NTU |
| Copper | 0.108 mg/L | 1.3 mg/L |
| Lead | 0.374 ug/L | 15 ug/L |
| Combined Radium | 0.06 pCi/L | 5 pCi/L |
| Chloride | 9.7 mg/L | — |
| Sulfate | 28 mg/L | — |
| Aluminum | 8.6 ug/L | 600 ug/L |
| Arsenic | 0 ug/L | 10 ug/L |
| Barium | 0 mg/L | 2 mg/L |
| Calcium | 41 mg/L | — |
| Chromium, Hexavalent | 0.78 ug/L | 0.2 ug/L |
| Iron | 15 ug/L | — |
| Magnesium | 21 mg/L | — |
| Manganese | 0 ug/L | — |
| Potassium | 1.8 mg/L | — |
| Sodium | 23.8 mg/L | — |
| Vanadium | 4.1 ug/L | — |
| Total Coliform | 0 | 0 |
| Carbon Tetrachloride | 0 ug/L | 5 ug/L |
| Tce | 0 ug/L | 5 ug/L |
| Perfluorobutanesulfonic acid | 1 ng/L | 500 ng/L |
| PFOA | 0 ng/L | 4 ng/L |
| Color | 1.9 | — |
| Hardness | 202 mg/L | — |
| Odor | 1 | — |
| pH | 7.8 | — |
| Specific Conductance | 453 | — |
| Total Dissolved Solids | 256 mg/L | — |
| Uranium | 4.3 pCi/L | 0.43 pCi/L |
What this report doesn't tell you
14 of the 27 contaminants a community water system normally reports do not appear anywhere in Big Bear City Csd — Big Bear City, 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-based1 violation on record · most recent Jul 1987resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗