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Tap water quality report

Santee, CA

EPA monitoring detected 23 contaminants across the 3 water suppliers serving Santee. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

3
water suppliers
94,580
people served
23
contaminants found
California rankings Lead in California PFAS in California

What was found in Santee's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
5980 µg/L 60%
of the EPA limit 10000 µg/L
 2/3 SYR4
Fluoride
1270 µg/L 32%
of the EPA limit 4000 µg/L
 2/3 SYR4
Nitrate-Nitrite
600 µg/L 6%
of the EPA limit 10000 µg/L
 1/3 SYR4
Combined Uranium
336.74 µg/L 1122%
of the EPA limit, in the worst sample — 30 µg/L
 2/3 SYR4
Dalapon
83 µg/L 42%
of the EPA limit 200 µg/L
 1/3 SYR4
TTHM
68 µg/L 85%
of the EPA limit 80 µg/L
 1/3 SYR4
Barium
56 µg/L 2.8%
of the EPA limit 2000 µg/L
 2/3 SYR4
Lithium
47 µg/L
No EPA limit set
 1/3 UCMR-5
Dibromochloromethane
30 µg/L
No EPA limit set
 1/3 SYR4
Bromodichloromethane
20 µg/L
No EPA limit set
 1/3 SYR4
Chloroform
20 µg/L
No EPA limit set
 1/3 SYR4
Total Haloacetic Acids (HAA5)
15 µg/L 25%
of the EPA limit 60 µg/L
 1/3 SYR4
Bromoform
14 µg/L
No EPA limit set
 1/3 SYR4
Lead
13 µg/L 87%
of the EPA limit 15 µg/L
 1/3 SYR4
Copper
10 µg/L 0.8%
of the EPA limit 1300 µg/L
 1/3 SYR4
Dichloroacetic Acid
7.9 µg/L
No EPA limit set
 1/3 SYR4
Monochloroacetic Acid
7.4 µg/L
No EPA limit set
 1/3 SYR4
Dibromoacetic Acid
5.1 µg/L
No EPA limit set
 1/3 SYR4
Trichloroacetic Acid
4.4 µg/L
No EPA limit set
 1/3 SYR4
Monobromoacetic Acid
4 µg/L
No EPA limit set
 1/3 SYR4
Cadmium
2 µg/L 40%
of the EPA limit 5 µg/L
 1/3 SYR4
Lead
0.0063 mg/L 42%
of the EPA limit 0.0150 mg/L
 3/3 LCR
Pfba
0.0058 µg/L
No EPA limit set
 1/3 UCMR-5
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. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Santee

SupplierPopulation served
PADRE DAM MWD 93,980
BARRETT LAKE MH AND RV LLC 300
HEAVENLY OAKS 300

Frequently asked questions about Santee tap water

Is Santee tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Santee. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Santee?

3 public water suppliers report drinking-water monitoring for Santee, California to the EPA. Each is listed above with its population served.

What contaminants are in Santee's water?

The contaminants EPA monitoring detected in Santee include Nitrate, Fluoride, Nitrate-Nitrite, Combined Uranium, Dalapon. The full list, with the highest level found and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.