Drinking water quality · 2023
· Verified
· PWSID CA1510003
What's in Cws - Bakersfield — San Jose, Ca, CA tap water
Every one of the 17 core regulated contaminants reported for Cws - Bakersfield — San Jose, Ca, CA came in below its federal limit.
- !1 contaminant within 20% of a limit
- !17 of 27 core regulated contaminants reported — 10 never appear in this report
- ✓Nothing over a federal limit
- ✓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.
- −0 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
- −3 core regulated contaminants never reported (17/27)
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
- TTHM80% of the federal limit64 ug/L · limit 80 ug/L
Long-term exposure above the federal limit is linked to liver, kidney, and central-nervous-system effects and increased cancer risk.
Higher than 90% of CA systems that report it · higher than 85% of U.S. systems
+39 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| HAA5 | 40 ug/L | 60 ug/L |
| Chlorine Free | 1.2 mg/L | 4 mg/L |
| Nitrate | 1.5 mg/L | 10 mg/L |
| Turbidity | 0.111 NTU | 1 NTU |
| Gross Alpha | 1.33 pCi/L | 15 pCi/L |
| Copper | 0.11 mg/L | 1.3 mg/L |
| Perfluorohexanesulfonic acid | 0.8 ng/L | 10 ng/L |
| Fluoride | 0.2 mg/L | 4 mg/L |
| Perfluorononanoic acid | 0.01 ng/L | 10 ng/L |
| Perchlorate | 2 mg/L | — |
| Aluminum | 91 ug/L | — |
| Arsenic | Not detected ug/L | 10 ug/L |
| Barium | Not detected mg/L | 2 mg/L |
| Boron | 0.15 mg/L | 1 mg/L |
| Calcium | 34 mg/L | — |
| Chromium, Hexavalent | 0.48 ug/L | — |
| Lead | Not detected ug/L | 15 ug/L |
| Lithium | 12 ug/L | — |
| Magnesium | 5.54 mg/L | — |
| Potassium | 2.59 mg/L | — |
| Sodium | 32.4 mg/L | — |
| Vanadium | 7.3 ug/L | 50 ug/L |
| Escherichia coli (E. coli) | 0 | — |
| Perfluorobutanesulfonic acid | 0.18 ng/L | 500 ng/L |
| Perfluoroheptanoic acid | 0.07 ng/L | — |
| Perfluorohexanoic acid | 0.32 ng/L | — |
| Perfluoropentanoic acid | 0.57 ng/L | — |
| PFBA | 0.15 ng/L | — |
| PFOA | Not detected ng/L | 4 ng/L |
| PFOS | Not detected ng/L | 4 ng/L |
| Alkalinity | 96 mg/L | — |
| Hardness | 109 mg/L | — |
| pH | 7.8 | — |
| TOC | 2.2 mg/L | — |
| Combined Radium | Not detected pCi/L | 5 pCi/L |
| Uranium | 1.3 pCi/L | 20 pCi/L |
| 1,2,3-TCP | Not detected ng/L | — |
| Tetrachloroethylene | Not detected ug/L | 5 ug/L |
| Trichloroethylene | Not detected ug/L | 5 ug/L |
What this report doesn't tell you
10 of the 27 contaminants a community water system normally reports do not appear anywhere in Cws - Bakersfield — San Jose, 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-based3 violations on record · most recent Nov 2002resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗