Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	AZ0414024
PWS Name	CITY OF YUMA
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	103264
County Served	Yuma

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6628	Returned to Compliance	01-JUN-2025	30-JUN-2025	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	6627	Returned to Compliance	01-DEC-2024	31-DEC-2024	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6626	Returned to Compliance	01-DEC-2024	31-DEC-2024	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6614	Returned to Compliance	01-MAR-2022	-	No
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6611	Returned to Compliance	01-MAR-2022	31-MAR-2022	Yes
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6608	Returned to Compliance	01-FEB-2022	28-FEB-2022	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6609	Returned to Compliance	01-FEB-2022	28-FEB-2022	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6613	Returned to Compliance	01-FEB-2022	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	6610	Returned to Compliance	01-FEB-2022	28-FEB-2022	No
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6607	Returned to Compliance	01-JAN-2022	31-JAN-2022	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6612	Returned to Compliance	01-JAN-2022	-	No
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6604	Returned to Compliance	01-DEC-2021	31-DEC-2021	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6606	Returned to Compliance	01-DEC-2021	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6603	Returned to Compliance	01-NOV-2021	-	No
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6601	Returned to Compliance	01-NOV-2021	30-NOV-2021	Yes
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6598	Returned to Compliance	01-OCT-2021	31-OCT-2021	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6600	Returned to Compliance	01-OCT-2021	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	6597	Returned to Compliance	01-OCT-2021	31-OCT-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6596	Returned to Compliance	01-OCT-2021	31-OCT-2021	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	6521	Returned to Compliance	01-OCT-2021	31-DEC-2021	Yes
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6593	Returned to Compliance	01-SEP-2021	30-SEP-2021	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	6592	Returned to Compliance	01-SEP-2021	30-SEP-2021	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6595	Returned to Compliance	01-SEP-2021	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6590	Returned to Compliance	01-AUG-2021	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6586	Returned to Compliance	01-AUG-2021	31-AUG-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	6587	Returned to Compliance	01-AUG-2021	31-AUG-2021	No
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6588	Returned to Compliance	01-AUG-2021	31-AUG-2021	Yes
MRDL	Non-Acute MRDL	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6589	Returned to Compliance	01-AUG-2021	31-AUG-2021	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6585	Returned to Compliance	01-JUL-2021	-	No
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6583	Returned to Compliance	01-JUL-2021	31-JUL-2021	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6578	Returned to Compliance	01-JUN-2021	30-JUN-2021	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6582	Returned to Compliance	01-JUN-2021	-	No
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6580	Returned to Compliance	01-JUN-2021	30-JUN-2021	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	6579	Returned to Compliance	01-JUN-2021	30-JUN-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	6574	Returned to Compliance	01-MAY-2021	31-MAY-2021	No
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6575	Returned to Compliance	01-MAY-2021	31-MAY-2021	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6573	Returned to Compliance	01-MAY-2021	31-MAY-2021	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6577	Returned to Compliance	01-MAY-2021	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	6569	Returned to Compliance	01-APR-2021	30-APR-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6568	Returned to Compliance	01-APR-2021	30-APR-2021	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6572	Returned to Compliance	01-APR-2021	-	No
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6570	Returned to Compliance	01-APR-2021	30-APR-2021	Yes
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6565	Returned to Compliance	01-MAR-2021	31-MAR-2021	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6563	Returned to Compliance	01-MAR-2021	31-MAR-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	6564	Returned to Compliance	01-MAR-2021	31-MAR-2021	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6567	Returned to Compliance	01-MAR-2021	-	No
MRDL	Acute Maximum Residual Disinfectant Level	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6560	Returned to Compliance	01-FEB-2021	28-FEB-2021	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	6558	Returned to Compliance	01-FEB-2021	28-FEB-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	6559	Returned to Compliance	01-FEB-2021	28-FEB-2021	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	6562	Returned to Compliance	01-FEB-2021	-	No

1 - 50 of 238

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
3856	6628	SOX	State Compliance achieved	21-OCT-2025	State	Compliance acheived after following monitoring month with no deficiencies. BM11 10/21/2025.
3849	6626	SOX	State Compliance achieved	03-FEB-2025	State	System collected additional samples and were below the MCL. VK9 2/3/2025
3849	6627	SOX	State Compliance achieved	03-FEB-2025	State	System collected additional samples and were below the MCL. VK9 2/3/2025
3840	6521	SOX	State Compliance achieved	09-JUN-2022	State	Achieved removal ratio in 1Q-2022. AH9 6/9/2022
3839	6590	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6595	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6600	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6603	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6606	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6612	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6613	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6614	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3837	6527	SIF	State Public Notification received	02-JUN-2022	State	-
3838	6528	SIF	State Public Notification received	02-JUN-2022	State	-
3835	6532	SIF	State Public Notification received	02-JUN-2022	State	-
3836	6533	SIF	State Public Notification received	02-JUN-2022	State	-
3833	6537	SIF	State Public Notification received	02-JUN-2022	State	-
3834	6538	SIF	State Public Notification received	02-JUN-2022	State	-
3831	6542	SIF	State Public Notification received	02-JUN-2022	State	-
3832	6543	SIF	State Public Notification received	02-JUN-2022	State	-
3829	6547	SIF	State Public Notification received	02-JUN-2022	State	-
3830	6548	SIF	State Public Notification received	02-JUN-2022	State	-
3827	6552	SIF	State Public Notification received	02-JUN-2022	State	-
3828	6553	SIF	State Public Notification received	02-JUN-2022	State	-
3825	6558	SIF	State Public Notification received	02-JUN-2022	State	-
3826	6559	SIF	State Public Notification received	02-JUN-2022	State	-
3823	6563	SIF	State Public Notification received	02-JUN-2022	State	-
3824	6564	SIF	State Public Notification received	02-JUN-2022	State	-
3821	6568	SIF	State Public Notification received	02-JUN-2022	State	-
3822	6569	SIF	State Public Notification received	02-JUN-2022	State	-
3819	6573	SIF	State Public Notification received	02-JUN-2022	State	-
3820	6574	SIF	State Public Notification received	02-JUN-2022	State	-
3817	6578	SIF	State Public Notification received	02-JUN-2022	State	-
3818	6579	SIF	State Public Notification received	02-JUN-2022	State	-
3815	6586	SIF	State Public Notification received	02-JUN-2022	State	-
3816	6587	SIF	State Public Notification received	02-JUN-2022	State	-
3814	6589	SIF	State Public Notification received	02-JUN-2022	State	-
3813	6592	SIF	State Public Notification received	02-JUN-2022	State	-
3811	6596	SIF	State Public Notification received	02-JUN-2022	State	-
3812	6597	SIF	State Public Notification received	02-JUN-2022	State	-
3809	6609	SIF	State Public Notification received	02-JUN-2022	State	-
3810	6610	SIF	State Public Notification received	02-JUN-2022	State	-
3839	6525	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6531	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6536	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6541	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6546	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6551	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6556	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.
3839	6562	SOX	State Compliance achieved	02-JUN-2022	State	Tier 3 public notices completed on 5/23/2022, included as part of 2021 Consumer Confidence Report. AH9 6/2/2022.

1 - 50 of 199

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
IN-C1402401SI - YUMA MAIN CANAL	11055	Yes	Intake	Surface water	Permanent	Active
WL-55-805921	6906	Yes	Well	Ground water	Permanent	Active
WL-55-239681 - WELL 9E-1(R)	26612	Yes	Well	Ground water	Permanent	Active
WL-55-208566	23127	Yes	Well	Ground water	Permanent	Active
WL-55-202044	16615	Yes	Well	Ground water	Permanent	Active
XIN-C140242SI - A MAIN CANAL	11056	Yes	Intake	Surface water	Permanent	Inactive
IN-C1402402SI - GILA GRAVITY B CANAL	22392	Yes	Intake	Surface water	Permanent	Active
XEPDS001	8481	No	Clear Well	-	-	Inactive
XEPDS002	8482	No	Clear Well	-	-	Inactive
DISTRIBUTION SYSTEM	12212	No	Distribution System/Zone	-	-	Active
EPDS002	17067	No	Sampling Station	-	-	Active
EPDS001	26170	No	Sampling Station	-	-	Active
XEPDS004	16534	No	Sampling Station	-	-	Inactive
XEPDS003	16758	No	Sampling Station	-	-	Inactive
XEPHIS	17920	No	Sampling Station	-	-	Inactive
STORAGE TANK 001 - 2,500,000	23128	No	Storage	-	-	Active
STORAGE TANK 002 - 2,500,000	23129	No	Storage	-	-	Active
STORAGE TANK 003 - 3,000,000	23130	No	Storage	-	-	Active
STORAGE TANK 004 - 3,000,000	23131	No	Storage	-	-	Active
STORAGE TANK 005 - 3,000,000	23132	No	Storage	-	-	Active
STORAGE TANK 006 - 1,500,000	23133	No	Storage	-	-	Active
TP002 - CL2, CLO2	17066	No	Treatment Plant	-	-	Active
TP003 - 4LOG	25137	No	Treatment Plant	-	-	Active
TP001 - CL2, CLO2	514	No	Treatment Plant	-	-	Active
XTP-01 - YUMA MAIN PLANT	513	No	Treatment Plant	-	-	Inactive

1 - 25 of 25

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP002 - CL2, CLO2	17066	Hypochlorination, Post	Disinfection
TP002 - CL2, CLO2	17066	Chlorine Dioxide	Disinfection
TP002 - CL2, CLO2	17066	Coagulation	Iron removal
TP002 - CL2, CLO2	17066	Filtration, Ultrafiltration	Particulate removal
TP002 - CL2, CLO2	17066	Flocculation	Inorganics removal
TP003 - 4LOG	25137	4-Log Treatment of Viruses	Disinfection
TP001 - CL2, CLO2	514	Gaseous Chlorination, Pre	Disinfection
TP001 - CL2, CLO2	514	Permanganate	Taste / odor control
TP001 - CL2, CLO2	514	Coagulation	Particulate removal
TP001 - CL2, CLO2	514	Flocculation	Particulate removal
TP001 - CL2, CLO2	514	Sedimentation	Particulate removal

1 - 11 of 11

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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