Drinking water quality · 2022
· Verified
· PWSID CA1910163
What's in Valencia Heights Water Co. — West Covina, Ca, CA tap water
2 contaminants in Valencia Heights Water Co. — West Covina, Ca, CA's water sat at or above a federal limit, led by Bromate at 1.2x the limit.
- !2 contaminants at or above a federal limit — worst is Bromate 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.
- −27 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
- Bromate1.2× the federal limit0–12 ug/L · limit 10 ug/L
Classified as a probable human carcinogen; the EPA sets a strict maximum contaminant level.
Higher than 95% of CA systems that report it · higher than 95% of U.S. systems
- PFOS1.0× the federal limit4 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
- Chlorine95% of the federal limit0.3–3.8 mg/L · limit 4 mg/L
Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.
Higher than 95% of CA systems that report it · higher than 95% of U.S. systems
+27 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| Nitrate | 0.71–6 mg/L | 10 mg/L |
| Turbidity | 0.28–0.5 NTU | 1 NTU |
| Copper | 0.63 mg/L | 1.3 mg/L |
| TTHM | 29 ug/L | 80 ug/L |
| Arsenic | 0–3.1 ug/L | 10 ug/L |
| Perfluorohexanesulfonic acid | 3 ng/L | 10 ng/L |
| HAA5 | 4.8–15 ug/L | 60 ug/L |
| Gross Alpha | 3.3 pCi/L | 15 pCi/L |
| Fluoride | 0.6–0.8 mg/L | 4 mg/L |
| Barium | 0–0.12 mg/L | 2 mg/L |
| Perchlorate | 0–3.9 ug/L | — |
| Chloride | 93–110 mg/L | — |
| Sulfate | 230–280 mg/L | — |
| Aluminum | 120 ug/L | — |
| Boron | 0.12–0.14 mg/L | 1 mg/L |
| Lead | Not detected ug/L | 15 ug/L |
| Manganese | 0–29 ug/L | — |
| Sodium | 68–70 mg/L | — |
| Vanadium | 8–9.7 ug/L | 50 ug/L |
| Perfluorobutanesulfonic acid | 3 ng/L | 500 ng/L |
| Color | 4–5 | — |
| Hardness | 520–610 mg/L | — |
| Odor | 2 | — |
| Specific Conductance | 1300 uS/cm | — |
| Total Dissolved Solids | 750–920 mg/L | — |
| Gross Beta Particle Activity | 0–6 pCi/L | — |
| Uranium | 2.7–9.7 pCi/L | 20 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 Valencia Heights Water Co. — West Covina, 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 Feb 1996resolved
- Treatment technique violationHealth-based1 violation on record · most recent May 1993resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗