Public water system record
City of Yuma
Serves Yuma, Yuma County, AZ · 103,264 people served
Federal records show 23 health-based violations and 61 monitoring/reporting issues for City of Yuma in the last ten years. The most serious issue in this window was a resolved Chlorine dioxide violation.
System profile
- Health-based violations, last 10 years
- 23
- Resolved
- 23
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 61
Key facts
- City of Yuma draws water from 4 wells and 2 surface water intakes.
- Highest measured level in the last 10 years: Chlorine dioxide, 2 mg/L, federal limit 0.8 mg/L (2.5 times the limit), 2021.
- Record on file since 1979, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 16,386 unknown out of 34,540 service lines.
Check whether City of Yuma 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 |
|---|---|---|---|---|
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1 mg/L, federal limit 0.8 mg/L (1.3 times the limit)
|
210 | Mar 1, 2022 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.6 mg/L, federal limit 0.8 mg/L (2 times the limit)
|
210 | Feb 1, 2022 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.3 mg/L, federal limit 0.8 mg/L (1.6 times the limit)
|
210 | Jan 1, 2022 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.3 mg/L, federal limit 0.8 mg/L (1.6 times the limit)
|
210 | Dec 1, 2021 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.3 mg/L, federal limit 0.8 mg/L (1.6 times the limit)
|
210 | Nov 1, 2021 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1 mg/L, federal limit 0.8 mg/L (1.3 times the limit)
|
210 | Oct 1, 2021 | Resolved | Yes |
|
CARBON, TOTAL
Treatment technique failure
|
210 | Oct 1, 2021 | Resolved | No |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.1 mg/L, federal limit 0.8 mg/L (1.4 times the limit)
|
210 | Sep 1, 2021 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
|
210 | Aug 1, 2021 | Resolved | No |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.2 mg/L, federal limit 0.8 mg/L (1.5 times the limit)
|
210 | Aug 1, 2021 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.5 mg/L, federal limit 0.8 mg/L (1.9 times the limit)
|
210 | Jul 1, 2021 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1 mg/L, federal limit 0.8 mg/L (1.3 times the limit)
|
210 | Jun 1, 2021 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.2 mg/L, federal limit 0.8 mg/L (1.5 times the limit)
|
210 | May 1, 2021 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.1 mg/L, federal limit 0.8 mg/L (1.4 times the limit)
|
210 | Apr 1, 2021 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.3 mg/L, federal limit 0.8 mg/L (1.6 times the limit)
|
210 | Mar 1, 2021 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 2 mg/L, federal limit 0.8 mg/L (2.5 times the limit)
|
210 | Feb 1, 2021 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 0.9 mg/L, federal limit 0.8 mg/L (1.1 times the limit)
|
210 | Jan 1, 2021 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1 mg/L, federal limit 0.8 mg/L (1.3 times the limit)
|
210 | Dec 1, 2020 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 0.9 mg/L, federal limit 0.8 mg/L (1.1 times the limit)
|
210 | Nov 1, 2020 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 0.9 mg/L, federal limit 0.8 mg/L (1.1 times the limit)
|
210 | Oct 1, 2020 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.7 mg/L, federal limit 0.8 mg/L (2.1 times the limit)
|
210 | Sep 1, 2020 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.4 mg/L, federal limit 0.8 mg/L (1.8 times the limit)
|
210 | Aug 1, 2020 | Resolved | Yes |
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1 mg/L, federal limit 0.8 mg/L (1.3 times the limit)
|
210 | Jul 1, 2020 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlorine dioxide
Monitoring and reporting
|
Jun 1, 2025 | Resolved |
|
Chlorite
Monitoring and reporting
|
Dec 1, 2024 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Dec 1, 2024 | Resolved |
|
Public Notice
OTHER
|
Mar 1, 2022 | Resolved |
|
Public Notice
OTHER
|
Feb 1, 2022 | Resolved |
|
Chlorite
Monitoring and reporting
|
Feb 1, 2022 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Feb 1, 2022 | Resolved |
|
Public Notice
OTHER
|
Jan 1, 2022 | Resolved |
|
Public Notice
OTHER
|
Dec 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Nov 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Oct 1, 2021 | Resolved |
|
Chlorite
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Sep 1, 2021 | Resolved |
|
Chlorite
Monitoring and reporting
|
Sep 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Aug 1, 2021 | Resolved |
|
Chlorite
Monitoring and reporting
|
Aug 1, 2021 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Aug 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Jun 1, 2021 | Resolved |
|
Chlorite
Monitoring and reporting
|
Jun 1, 2021 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Jun 1, 2021 | Resolved |
|
Public Notice
OTHER
|
May 1, 2021 | Resolved |
|
Chlorite
Monitoring and reporting
|
May 1, 2021 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
May 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Apr 1, 2021 | Resolved |
|
Chlorite
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Mar 1, 2021 | Resolved |
|
Chlorite
Monitoring and reporting
|
Mar 1, 2021 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Mar 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Feb 1, 2021 | Resolved |
|
Chlorite
Monitoring and reporting
|
Feb 1, 2021 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Feb 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Jan 1, 2021 | Resolved |
|
Chlorite
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Dec 1, 2020 | Resolved |
|
Chlorite
Monitoring and reporting
|
Dec 1, 2020 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Dec 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Nov 1, 2020 | Resolved |
|
Chlorite
Monitoring and reporting
|
Nov 1, 2020 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Nov 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Oct 1, 2020 | Resolved |
|
Chlorite
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Sep 1, 2020 | Resolved |
|
Chlorite
Monitoring and reporting
|
Sep 1, 2020 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Sep 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Aug 1, 2020 | Resolved |
|
Chlorite
Monitoring and reporting
|
Aug 1, 2020 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Aug 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Jul 1, 2020 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Sep 1, 2018 | Resolved |
|
Chlorite
Monitoring and reporting
|
Sep 1, 2018 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2018 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2018 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Aug 1, 2018 | Resolved |
|
Chlorite
Monitoring and reporting
|
Aug 1, 2018 | Resolved |
|
Chlorine dioxide
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Chlorite
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
Full record since 1979
EPA's records for City of Yuma go back to 1979. Before October 19, 2016 they list 1 health-based violation (1 archived by EPA without a recorded fix) and 153 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 8 |
| 1980s | 1 | 30 |
| 1990s | 0 | 6 |
| 2000s | 0 | 109 |
| October 19, 2016 to 2019 | 0 | 8 |
| 2020s | 23 | 53 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 1989, Archived.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Apr 1, 1989 | Archived |
What the violations mean
Chlorine dioxide
22 incidentsChlorine dioxide levels were above the federal maximum residual disinfectant level.
The utility had to notify customers about each of these violations.
CARBON, TOTAL
1 incidentThe system did not complete a treatment step or action that federal rules require for CARBON, TOTAL (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
City of Yuma draws water from 4 wells and 2 surface water intakes. 2 smaller public systems such as schools, businesses or campgrounds buy water from City of Yuma.
Annual water quality report
City of Yuma 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