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Tap water quality report

Chandler City of

EPA monitoring tested this supplier for 106 contaminants and detected 28. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

106
contaminants tested
28
detected
247,328
people served
11
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Surface water
Ownership
Local government
Counties served
Maricopa

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.

11
health-based violations
836
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Archived 2000-01-01 → 2000-12-31
MCL Health-based Archived 1991-12-31 → 1992-12-30
MCL Health-based Archived 1989-07-25 → 1993-07-24
MCL Health-based Archived 1989-04-01 → 1989-06-30
MCL Health-based Archived 1989-04-01 → 1989-06-30
MCL Health-based Archived 1983-07-18 → 1983-08-17

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0120 µg/L 10/55 2025
Pfpea 0.0053 µg/L 2/55 2025
Pfba 0.0050 µg/L 1/55 2025
Pfhxa 0.0035 µg/L 1/55 2025

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
Nitrate
6600 µg/L 66%
of the EPA limit 10000 µg/L
worst single sample: 9500 µg/L
824/850 SYR4 2012–2019
TTHM
91 µg/L 114%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 140 µg/L
385/390 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
34.2 µg/L 57%
of the EPA limit 60 µg/L
worst single sample: 60 µg/L
377/390 SYR4 2012–2019
Arsenic
8.4 µg/L 84%
of the EPA limit 10 µg/L
worst single sample: 9.8 µg/L
261/267 SYR4 2012–2019
Copper
272.7 µg/L 21%
of the EPA limit 1300 µg/L
worst single sample: 770 µg/L
155/156 SYR4 2013–2019
Combined Uranium
5.1665 µg/L 17%
of the EPA limit 30 µg/L
worst single sample: 7.599 µg/L
126/133 SYR4 2012–2019
Barium
130 µg/L 6.5%
of the EPA limit 2000 µg/L
worst single sample: 660 µg/L
112/112 SYR4 2012–2019
Fluoride
1200 µg/L 30%
of the EPA limit 4000 µg/L
worst single sample: 1600 µg/L
101/114 SYR4 2012–2019
Chromium
20.1 µg/L 20%
of the EPA limit 100 µg/L
worst single sample: 24 µg/L
99/112 SYR4 2012–2019
Nitrate-Nitrite
6450 µg/L 65%
of the EPA limit 10000 µg/L
worst single sample: 9500 µg/L
91/91 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
2.93 pCi/L 20%
of the EPA limit 15 pCi/L
worst single sample: 3.6 pCi/L
88/134 SYR4 2012–2019
Lithium
305 µg/L
No EPA limit set
 55/55 UCMR-5 2025
Lead
6.175 µg/L 41%
of the EPA limit 15 µg/L
worst single sample: 11 µg/L
54/156 SYR4 2013–2019
Selenium
7.695 µg/L 15%
of the EPA limit 50 µg/L
worst single sample: 12 µg/L
30/112 SYR4 2012–2019
Combined Radium (-226 And -228)
1.07 pCi/L 21%
of the EPA limit 5 pCi/L
worst single sample: 2.3 pCi/L
23/133 SYR4 2012–2019
Lead
0.0014 mg/L 9.3%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
Dalapon
8.535 µg/L 4.3%
of the EPA limit 200 µg/L
worst single sample: 12 µg/L
8/324 SYR4 2012–2019
Bromate
63.8 µg/L 638%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 68 µg/L
7/155 SYR4 2012–2016
2,4-D
0.3200 µg/L 0.5%
of the EPA limit 70 µg/L
worst single sample: 0.3400 µg/L
6/287 SYR4 2012–2019
Xylenes, Total
61.05 µg/L 0.6%
of the EPA limit 10000 µg/L
worst single sample: 63 µg/L
4/263 SYR4 2012–2019
Benzo(A)Pyrene
0.0434 µg/L 22%
of the EPA limit 0.2000 µg/L
worst single sample: 0.0440 µg/L
3/278 SYR4 2012–2019
Di(2-ethylhexyl) Phthalate
3.2 µg/L 53%
of the EPA limit 6 µg/L
worst single sample: 3.4 µg/L
3/344 SYR4 2012–2019
Hexachlorocyclopentadiene
0.1200 µg/L 0.2%
of the EPA limit 50 µg/L
 2/311 SYR4 2012–2019
Mercury
1.3 µg/L 65%
of the EPA limit 2 µg/L
 1/112 SYR4 2012–2019
78 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-TP4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideLassoMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MCCALLUM, LORI
Phone
480-782-3730
Email
[email protected]

Frequently asked questions about Chandler City of

Is Chandler City of tap water safe to drink?

EPA monitoring detected 28 contaminants in Chandler City of'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 Chandler City of's water?

EPA monitoring detected Nitrate, TTHM, Total Haloacetic Acids (HAA5), Arsenic, Copper, and others. The full list with the level and data source for each is above.

How many people does Chandler City of serve?

Chandler City of reports serving 247,328 people in Arizona, per its EPA record.

Has Chandler City of had any water quality violations?

The EPA has 836 violations on file for Chandler City of, of which 11 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.