Tap WaterIndex

← Alhambra, CA

Tap water quality report

ZIP 91803 — Alhambra, CA

EPA monitoring across the 2 water suppliers serving ZIP 91803 in Alhambra, CA detected 29 contaminants. A detection doesn't automatically mean the water is unsafe — see the highest level found below, with the EPA limit for each.

2
water suppliers
127,771
people served
29
contaminants found

What was found in ZIP 91803

The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
16600 µg/L 166%
of the EPA limit, in the worst sample — 10000 µg/L
 2/2 SYR4
Nitrate-Nitrite
16000 µg/L 160%
of the EPA limit, in the worst sample — 10000 µg/L
 2/2 SYR4
Fluoride
1080 µg/L 27%
of the EPA limit 4000 µg/L
 2/2 SYR4
Copper
160 µg/L 12%
of the EPA limit 1300 µg/L
 1/2 SYR4
Lithium
91.9 µg/L
No EPA limit set
 2/2 UCMR-5
TTHM
74 µg/L 93%
of the EPA limit 80 µg/L
 2/2 SYR4
cis-1,2-Dichloroethylene
50 µg/L 71%
of the EPA limit 70 µg/L
 2/2 SYR4
Chromium
44 µg/L 44%
of the EPA limit 100 µg/L
 1/2 SYR4
Trichloroethylene
31 µg/L 620%
of the EPA limit, in the worst sample — 5 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
29 µg/L 48%
of the EPA limit 60 µg/L
 2/2 SYR4
Chloroform
28 µg/L
No EPA limit set
 2/2 SYR4
Dibromochloromethane
25 µg/L
No EPA limit set
 2/2 SYR4
Combined Uranium
23.84 µg/L 79%
of the EPA limit 30 µg/L
 2/2 SYR4
Bromodichloromethane
23 µg/L
No EPA limit set
 2/2 SYR4
Tetrachloroethylene
17 µg/L 340%
of the EPA limit, in the worst sample — 5 µg/L
 2/2 SYR4
Dichloroacetic Acid
15 µg/L
No EPA limit set
 2/2 SYR4
Trichloroacetic Acid
13 µg/L
No EPA limit set
 2/2 SYR4
Bromoform
11 µg/L
No EPA limit set
 2/2 SYR4
Dibromoacetic Acid
6.6 µg/L
No EPA limit set
 2/2 SYR4
Monochloroacetic Acid
3 µg/L
No EPA limit set
 1/2 SYR4
1,2-Dichloropropane
2.9 µg/L 58%
of the EPA limit 5 µg/L
 1/2 SYR4
Arsenic
2.9 µg/L 29%
of the EPA limit 10 µg/L
 1/2 SYR4
Mercury
2.1 µg/L 105%
of the EPA limit, in the worst sample — 2 µg/L
 1/2 SYR4
Carbon Tetrachloride
1.1 µg/L 22%
of the EPA limit 5 µg/L
 2/2 SYR4
Lead
1 µg/L 6.7%
of the EPA limit 15 µg/L
 1/2 SYR4
trans-1,2-Dichloroethylene
0.8300 µg/L 0.8%
of the EPA limit 100 µg/L
 1/2 SYR4
1,1-Dichloroethylene
0.7700 µg/L 11%
of the EPA limit 7 µg/L
 1/2 SYR4
Pfba
0.0053 µg/L
No EPA limit set
 1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 2/2 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Water suppliers serving ZIP 91803

SupplierStatePopulation served
CITY OF ALHAMBRA CA 79,776
CAL/AM WATER COMPANY - SAN MARINO CA 47,995

Frequently asked questions about ZIP 91803 tap water

Is the tap water in ZIP 91803 safe to drink?

EPA testing detected 29 contaminants across the water suppliers serving ZIP 91803. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 91803?

2 public water suppliers report EPA drinking-water monitoring for ZIP 91803. Each is listed above with its population served.

What contaminants are in ZIP 91803's water?

EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.