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Tap water quality report

City of Show Low

EPA monitoring tested this supplier for 101 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

101
contaminants tested
14
detected
17,139
people served
6
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground water
Ownership
Local government
Counties served
Navajo

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

6
health-based violations
763
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2021-11-12
TT Health-based Resolved 2021-11-12
TT Health-based Resolved 2021-11-12
TT Health-based Resolved 2021-11-12
MCL Health-based Resolved 2011-11-01 → 2011-11-30
MCL Health-based Resolved 2011-11-01 → 2011-11-30
MR Monitoring Resolved 2023-01-01
MR Monitoring Resolved 2023-01-01
MR Monitoring Archived 2022-01-01 → 2024-12-31
MR Monitoring Archived 2022-01-01 → 2024-12-31

Other contaminants detected

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Arsenic
10 µg/L 100%
of the EPA limit 10 µg/L
worst single sample: 14 µg/L
176/176 SYR4 2012–2019
Copper
444.8 µg/L 34%
of the EPA limit 1300 µg/L
worst single sample: 15000 µg/L
79/80 SYR4 2013–2019
Lead
7.28 µg/L 49%
of the EPA limit 15 µg/L
worst single sample: 29 µg/L
43/80 SYR4 2013–2019
Selenium
39.15 µg/L 78%
of the EPA limit 50 µg/L
worst single sample: 48.2 µg/L
35/36 SYR4 2013–2019
Barium
70 µg/L 3.5%
of the EPA limit 2000 µg/L
worst single sample: 80 µg/L
21/21 SYR4 2016–2019
Fluoride
171 µg/L 4.3%
of the EPA limit 4000 µg/L
worst single sample: 180 µg/L
19/22 SYR4 2016–2019
Lithium
18.4 µg/L
No EPA limit set
 17/20 UCMR-5 2024
Cadmium
0.2000 µg/L 4%
of the EPA limit 5 µg/L
 14/21 SYR4 2016–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Nitrate
210 µg/L 2.1%
of the EPA limit 10000 µg/L
 8/170 SYR4 2012–2019
TTHM
1.74 µg/L 2.2%
of the EPA limit 80 µg/L
worst single sample: 1.8 µg/L
7/38 SYR4 2013–2019
Nitrate-Nitrite
201 µg/L 2%
of the EPA limit 10000 µg/L
worst single sample: 210 µg/L
4/83 SYR4 2012–2019
Combined Radium (-226 And -228)
2.7 pCi/L 54%
of the EPA limit 5 pCi/L
worst single sample: 2.9 pCi/L
3/16 SYR4 2013–2019
Thallium, Total
1.465 µg/L 73%
of the EPA limit 2 µg/L
worst single sample: 1.5 µg/L
2/21 SYR4 2016–2019
87 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
AUSTIN, RICK
Phone
928-532-4103
Email
[email protected]

Frequently asked questions about City of Show Low

Is City of Show Low tap water safe to drink?

EPA monitoring detected 14 contaminants in City of Show Low's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in City of Show Low's water?

EPA monitoring detected Arsenic, Copper, Lead, Selenium, Barium, and others. The full list with the level and data source for each is above.

How many people does City of Show Low serve?

City of Show Low reports serving 17,139 people in Arizona, per its EPA record.

Has City of Show Low had any water quality violations?

The EPA has 763 violations on file for City of Show Low, of which 6 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.