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Tap water quality report

Show Low, AZ

EPA monitoring detected 20 contaminants across the 10 water suppliers serving Show Low. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

10
water suppliers
31,937
people served
20
contaminants found
Arizona rankings Lead in Arizona PFAS in Arizona

What was found in Show Low'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
Copper
15000 µg/L 1154%
of the EPA limit, in the worst sample — 1300 µg/L
 9/10 SYR4
Selenium
1700 µg/L 3400%
of the EPA limit, in the worst sample — 50 µg/L
 6/10 SYR4
Nitrate
1400 µg/L 14%
of the EPA limit 10000 µg/L
 6/10 SYR4
Nitrate-Nitrite
1340 µg/L 13%
of the EPA limit 10000 µg/L
 4/10 SYR4
Barium
290 µg/L 14%
of the EPA limit 2000 µg/L
 8/10 SYR4
Fluoride
260 µg/L 6.5%
of the EPA limit 4000 µg/L
 8/10 SYR4
Lead
30.2 µg/L 201%
of the EPA limit, in the worst sample — 15 µg/L
 8/10 SYR4
Lithium
25.1 µg/L
No EPA limit set
 2/10 UCMR-5
TTHM
15.4 µg/L 19%
of the EPA limit 80 µg/L
 2/10 SYR4
Arsenic
14 µg/L 140%
of the EPA limit, in the worst sample — 10 µg/L
 8/10 SYR4
Combined Uranium
12 µg/L 40%
of the EPA limit 30 µg/L
 1/10 SYR4
Gross Alpha, Excl. Radon And U
7.1 pCi/L 47%
of the EPA limit 15 pCi/L
 1/10 SYR4
Total Haloacetic Acids (HAA5)
4.3 µg/L 7.2%
of the EPA limit 60 µg/L
 1/10 SYR4
Chromium
3.2 µg/L 3.2%
of the EPA limit 100 µg/L
 2/10 SYR4
Cadmium
3 µg/L 60%
of the EPA limit 5 µg/L
 2/10 SYR4
Combined Radium (-226 And -228)
3 pCi/L 60%
of the EPA limit 5 pCi/L
 6/10 SYR4
Thallium, Total
1.5 µg/L 75%
of the EPA limit 2 µg/L
 1/10 SYR4
Lead
0.0130 mg/L 87%
of the EPA limit 0.0150 mg/L
 10/10 LCR
Endrin
0.0100 µg/L 0.5%
of the EPA limit 2 µg/L
 1/10 SYR4
PFBS
0.0034 µg/L
No EPA limit set
 1/10 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 Show Low

SupplierPopulation served
CITY OF SHOW LOW 17,139
ARIZONA WATER CO - LAKESIDE 12,191
TIMBERLAND ACRES DWID 922
WHITE MOUNTAIN WATER COMPANY 475
COUNTRY LANE TRAILER PARK 450
TIMBERLINE MHP 350
PINEDALE ESTATES DWID 208
NAVAJO WATER - LAGUNA ESTATES 89
CANYON VISTA ESTATES 75
SHOW LOW CROSSROADS HOA 38

Frequently asked questions about Show Low tap water

Is Show Low tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Show Low. 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 Show Low?

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

What contaminants are in Show Low's water?

The contaminants EPA monitoring detected in Show Low include Copper, Selenium, Nitrate, Nitrate-Nitrite, Barium. 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.