Drinking water quality · 2023
· Verified
· PWSID CA1910189
What's in San Gabriel Valley Water Co-montebello 1 — El Monte, Ca, CA tap water
Every one of the 13 core regulated contaminants reported for San Gabriel Valley Water Co-montebello 1 — El Monte, Ca, CA came in below its federal limit.
- !13 of 27 core regulated contaminants reported — 14 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
- −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
- −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 →+35 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| Chlorine Total | 2.09 mg/L | 4 mg/L |
| TTHM | 40.3 ug/L | 80 ug/L |
| Copper | 330 ug/L | 1300 ug/L |
| Bromate | 2 ug/L | 10 ug/L |
| Fluoride | 0.7 mg/L | 4 mg/L |
| Lead | 1.6 ug/L | 15 ug/L |
| HAA5 | 6 ug/L | 60 ug/L |
| Barium | 124 ug/L | 2000 ug/L |
| Dibromoacetic acid | 0.43 ug/L | 60 ug/L |
| Chlorate | 80 ug/L | 800 ug/L |
| Perchlorate | Not detected ug/L | 1 ug/L |
| Bromochloroacetic acid | Not detected ug/L | 60 ug/L |
| Chlorodibromoacetic acid | Not detected ug/L | 60 ug/L |
| Dichloroacetic acid | Not detected ug/L | 60 ug/L |
| Nitrate | Not detected mg/L | 10 mg/L |
| Aluminum | 93 ug/L | 600 ug/L |
| Arsenic | Not detected ug/L | 10 ug/L |
| Boron | 140 ug/L | 1000 ug/L |
| Calcium | 70.15 mg/L | — |
| Chromium, Hexavalent | Not detected ug/L | 0.02 ug/L |
| Lithium | 40 ug/L | — |
| Magnesium | 26 mg/L | — |
| Potassium | 5 mg/L | — |
| Sodium | 105 mg/L | — |
| Escherichia coli (E. coli) | 0 % | 0 % |
| Total Coliform | 0 % | 0 % |
| Alkalinity | 190.65 mg/L | — |
| Hardness | 272 mg/L | — |
| pH | 8.2 | — |
| TOC | 2.4 mg/L | — |
| Combined Radium | Not detected pCi/L | 5 pCi/L |
| Gross Alpha | Not detected pCi/L | 15 pCi/L |
| Gross Beta Particle Activity | Not detected pCi/L | 0 pCi/L |
| Uranium | Not detected pCi/L | 0.43 pCi/L |
| Dichlorodifluoromethane | Not detected ug/L | 1000 ug/L |
What this report doesn't tell you
14 of the 27 contaminants a community water system normally reports do not appear anywhere in San Gabriel Valley Water Co-montebello 1 — El Monte, 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.