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Tap water quality report

Scottsdale, AZ

EPA monitoring detected 21 contaminants across the 4 water suppliers serving Scottsdale. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

4
water suppliers
242,432
people served
21
contaminants found
Arizona rankings Lead in Arizona PFAS in Arizona

What was found in Scottsdale'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
7000 µg/L 70%
of the EPA limit 10000 µg/L
 4/4 SYR4
Nitrate-Nitrite
6400 µg/L 64%
of the EPA limit 10000 µg/L
 2/4 SYR4
Fluoride
1600 µg/L 40%
of the EPA limit 4000 µg/L
 3/4 SYR4
Barium
984 µg/L 49%
of the EPA limit 2000 µg/L
 4/4 SYR4
Copper
748 µg/L 58%
of the EPA limit 1300 µg/L
 2/4 SYR4
TTHM
102 µg/L 127%
of the EPA limit, in the worst sample — 80 µg/L
 4/4 SYR4
Lithium
90.4 µg/L
No EPA limit set
 1/4 UCMR-5
Chromium
42.4 µg/L 42%
of the EPA limit 100 µg/L
 1/4 SYR4
Total Haloacetic Acids (HAA5)
27.6 µg/L 46%
of the EPA limit 60 µg/L
 4/4 SYR4
Arsenic
9.6 µg/L 96%
of the EPA limit 10 µg/L
 4/4 SYR4
Lead
7.3 µg/L 49%
of the EPA limit 15 µg/L
 2/4 SYR4
Combined Uranium
5.2 µg/L 17%
of the EPA limit 30 µg/L
 3/4 SYR4
Selenium
5.2 µg/L 10%
of the EPA limit 50 µg/L
 2/4 SYR4
Xylenes, Total
3 µg/L 0%
of the EPA limit 10000 µg/L
 1/4 SYR4
Gross Alpha, Excl. Radon And U
2.7 pCi/L 18%
of the EPA limit 15 pCi/L
 2/4 SYR4
Dichloromethane
1 µg/L 20%
of the EPA limit 5 µg/L
 1/4 SYR4
Combined Radium (-226 And -228)
0.7000 pCi/L 14%
of the EPA limit 5 pCi/L
 1/4 SYR4
Ethylbenzene
0.5500 µg/L 0.1%
of the EPA limit 700 µg/L
 1/4 SYR4
Ethylene Dibromide
0.0860 µg/L 172%
of the EPA limit, in the worst sample — 0.0500 µg/L
 1/4 SYR4
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
 4/4 LCR
PFBS
0.0032 µg/L
No EPA limit set
 1/4 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 Scottsdale

SupplierPopulation served
SCOTTSDALE CITY OF 241,361
Salt River Lehi 652
GW -BWC, INC.- NSWC 319
Salt River North Mesa 100

Frequently asked questions about Scottsdale tap water

Is Scottsdale tap water safe to drink?

EPA testing detected 21 contaminants in the water serving Scottsdale. 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 Scottsdale?

4 public water suppliers report drinking-water monitoring for Scottsdale, Arizona to the EPA. Each is listed above with its population served.

What contaminants are in Scottsdale's water?

The contaminants EPA monitoring detected in Scottsdale include Nitrate, Nitrate-Nitrite, Fluoride, Barium, Copper. 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.