Public water system record
City of Chandler
Serves Chandler, Maricopa County, AZ · 247,328 people served
Federal records show 1 health-based violation and 156 monitoring/reporting issues for City of Chandler in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.
System profile
Source water
Surface water
ZIP
85244
EPA system ID
AZ0407090
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 156
Key facts
- City of Chandler draws water from 32 wells and 1 surface water intake.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2019.
- Record on file since 1980, with 7 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 26,497 unknown out of 89,377 service lines.
Check whether City of Chandler serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2019 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Nitrate
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Styrene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Toluene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Benzene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Arsenic
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Nitrate
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Nitrate
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Arsenic
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Arsenic
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Nitrate
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Nitrate
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Radium-228
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Radium-226
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Styrene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Toluene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Benzene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Dalapon
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Radium-228
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Radium-226
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Styrene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Radium-228
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Radium-226
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Toluene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Benzene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
Full record since 1980
EPA's records for City of Chandler go back to 1980. Before October 19, 2016 they list 7 health-based violations (7 archived by EPA without a recorded fix) and 477 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 5 | 1 |
| 1990s | 1 | 12 |
| 2000s | 1 | 462 |
| 2010 to October 18, 2016 | 0 | 2 |
| October 19, 2016 to 2019 | 1 | 78 |
| 2020s | 0 | 77 |
Most recent health-based violation before October 19, 2016: Di(2-ethylhexyl) phthalate, began January 2000, Archived.
Show all 7 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Di(2-ethylhexyl) phthalate
Contaminant limit exceeded
Measured 0.0096 mg/L, federal limit 0.006 mg/L (1.6 times the limit)
|
Jan 1, 2000 | Archived |
|
Chromium (total)
Contaminant limit exceeded
|
Dec 31, 1991 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jul 25, 1989 | Archived |
|
Chromium (total)
Contaminant limit exceeded
|
Apr 1, 1989 | Archived |
|
Mercury
Contaminant limit exceeded
|
Apr 1, 1989 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 18, 1983 | Archived |
|
Chromium (total)
Contaminant limit exceeded
|
Feb 13, 1981 | Archived |
What the violations mean
Total Trihalomethanes (TTHMs)
1 incidentDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
City of Chandler draws water from 32 wells and 1 surface water intake. It also has an emergency connection to City of Tempe. 1 other public water system has an emergency connection to City of Chandler.
Emergency or part-time connections to
- City of Tempe Tempe, AZ
Annual water quality report
City of Chandler must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Arizona.
Certified drinking water labs by state EPA guidance for private wells