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← American Canyon, CA

Tap water quality report

ZIP 94503 — American Canyon, CA

EPA monitoring across the 2 water suppliers serving ZIP 94503 in American Canyon, CA detected 24 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
24,237
people served
24
contaminants found

What was found in ZIP 94503

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-Nitrite
1000000 µg/L 10000%
of the EPA limit, in the worst sample — 10000 µg/L
 1/2 SYR4
Nitrate
1532.28 µg/L 15%
of the EPA limit 10000 µg/L
 1/2 SYR4
Fluoride
288 µg/L 7.2%
of the EPA limit 4000 µg/L
 2/2 SYR4
TTHM
143 µg/L 179%
of the EPA limit, in the worst sample — 80 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
115 µg/L 192%
of the EPA limit, in the worst sample — 60 µg/L
 2/2 SYR4
Chloroform
111 µg/L
No EPA limit set
 2/2 SYR4
Chromium
103 µg/L 103%
of the EPA limit, in the worst sample — 100 µg/L
 1/2 SYR4
Monochloroacetic Acid
96.8 µg/L
No EPA limit set
 1/2 SYR4
Lead
83 µg/L 553%
of the EPA limit, in the worst sample — 15 µg/L
 1/2 SYR4
Copper
75 µg/L 5.8%
of the EPA limit 1300 µg/L
 1/2 SYR4
Barium
56 µg/L 2.8%
of the EPA limit 2000 µg/L
 1/2 SYR4
Dichloroacetic Acid
45 µg/L
No EPA limit set
 2/2 SYR4
Bromodichloromethane
34 µg/L
No EPA limit set
 2/2 SYR4
Trichloroacetic Acid
31.1 µg/L
No EPA limit set
 2/2 SYR4
Dibromochloromethane
11.2 µg/L
No EPA limit set
 2/2 SYR4
Dibromoacetic Acid
10.1 µg/L
No EPA limit set
 1/2 SYR4
Monobromoacetic Acid
7.41 µg/L
No EPA limit set
 1/2 SYR4
Arsenic
7 µg/L 70%
of the EPA limit 10 µg/L
 2/2 SYR4
Di(2-ethylhexyl) Phthalate
3.8 µg/L 63%
of the EPA limit 6 µg/L
 1/2 SYR4
Combined Uranium
2.831 µg/L 9.4%
of the EPA limit 30 µg/L
 2/2 SYR4
Cadmium
2.3 µg/L 46%
of the EPA limit 5 µg/L
 1/2 SYR4
Bromoform
1.9 µg/L
No EPA limit set
 1/2 SYR4
Trichloroethylene
0.9700 µg/L 19%
of the EPA limit 5 µg/L
 1/2 SYR4
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 94503

SupplierStatePopulation served
AMERICAN CANYON, CITY OF CA 21,437
CITY OF VALLEJO-LAKES SYSTEM CA 2,800

Frequently asked questions about ZIP 94503 tap water

Is the tap water in ZIP 94503 safe to drink?

EPA testing detected 24 contaminants across the water suppliers serving ZIP 94503. 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 94503?

2 public water suppliers report EPA drinking-water monitoring for ZIP 94503. Each is listed above with its population served.

What contaminants are in ZIP 94503's water?

EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, TTHM, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.