Drinking water quality · 2024
· Verified
· PWSID CA1310700
What's in El Cajon, CA tap water
Every one of the 16 core regulated contaminants reported for El Cajon, CA came in below its federal limit.
- !16 of 27 core regulated contaminants reported — 11 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
- −5 core regulated contaminants never reported (16/27)
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 →+45 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| Chloramine | 1.9 mg/L | 4 mg/L |
| TTHM | 19.9 ug/L | 80 ug/L |
| Arsenic | 2.3 ug/L | 10 ug/L |
| HAA5 | 13.4 ug/L | 60 ug/L |
| Fluoride | 0.7 mg/L | 4 mg/L |
| Bromate | 1.6 ug/L | 10 ug/L |
| Lead | 0.0021 mg/L | 0.015 mg/L |
| Turbidity | 0.09 NTU | 1 NTU |
| Copper | 0.054 mg/L | 1.3 mg/L |
| Combined Radium | 0.16 pCi/L | 5 pCi/L |
| Chlorate | 186 ug/L | 800 ug/L |
| NDMA | Not detected ng/L | 10 ng/L |
| Bromide | Not detected mg/L | — |
| Chloride | 88 mg/L | — |
| Nitrate | Not detected mg/L | 10 mg/L |
| Sulfate | 140 mg/L | — |
| Aluminum | 0.14 mg/L | — |
| Barium | Not detected mg/L | 2 mg/L |
| Boron | 0.39 mg/L | 1 mg/L |
| Calcium | 51 mg/L | — |
| Chromium, Hexavalent | Not detected ug/L | — |
| Lithium | 28 ug/L | 10 ug/L |
| Magnesium | 21 mg/L | — |
| Potassium | 6 mg/L | — |
| Silica | 9.7 mg/L | — |
| Sodium | 76 mg/L | — |
| Strontium | 0.86 mg/L | — |
| Vanadium | Not detected ug/L | 50 ug/L |
| Escherichia coli (E. coli) | 0 % | — |
| Total Coliform | 0.6 % | — |
| Hexafluoropropylene oxide dimer acid | Not detected ng/L | 10 ng/L |
| Perfluorobutanesulfonic acid | Not detected ng/L | 500 ng/L |
| Perfluorohexanesulfonic acid | Not detected ng/L | 10 ng/L |
| Perfluorononanoic acid | Not detected ng/L | 10 ng/L |
| PFOA | Not detected ng/L | 4 ng/L |
| PFOS | Not detected ng/L | 4 ng/L |
| Alkalinity | 118 mg/L | — |
| Hardness | 214 mg/L | — |
| pH | 8.3 | — |
| Specific Conductance | 800 | — |
| TOC | 2.6 mg/L | — |
| Total Dissolved Solids | 483 mg/L | — |
| Gross Alpha | Not detected pCi/L | 15 pCi/L |
| Gross Beta Particle Activity | 2.7 pCi/L | — |
| Uranium | 1.4 pCi/L | 20 pCi/L |
What this report doesn't tell you
11 of the 27 contaminants a community water system normally reports do not appear anywhere in El Cajon, 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
Where your water comes from · EPA SDWIS
El Cajon, CA buys its drinking water from IMPERIAL IRRIGATION DISTRICT.
Source
Treatment
- TREATMENT PLANT EFFLUENT
Distribution
Also buys water from IMPERIAL IRRIGATION DISTRICT.
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 Jul 2009resolved
- Treatment technique violationHealth-based1 violation on record · most recent Jan 1996resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗