Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MD0300002
PWS Name	CITY OF BALTIMORE
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1600000
County Served	Baltimore city

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
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	44	Returned to Compliance	02-JUL-2025	-	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	38	Returned to Compliance	01-APR-2023	30-JUN-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	37	Returned to Compliance	01-APR-2023	30-JUN-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	36	Returned to Compliance	01-APR-2023	30-JUN-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	39	Returned to Compliance	01-APR-2023	30-JUN-2023	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	35	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	33	Returned to Compliance	05-SEP-2022	-	No
MCL	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	32	Returned to Compliance	01-SEP-2022	30-SEP-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	8	Returned to Compliance	01-JAN-2016	31-MAR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4	Returned to Compliance	01-APR-2015	30-JUN-2015	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	27	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	12	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	13	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	14	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	11	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	31	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	30	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	29	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	28	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	26	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	25	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	24	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	23	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	22	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	21	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	20	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	19	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	18	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	17	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	16	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	15	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	3	Returned to Compliance	01-JUL-2013	30-SEP-2013	Yes
TT	Treatment Technique Uncovered Reservoir	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	#0900001	Returned to Compliance	01-APR-2009	-	Yes
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	2	Returned to Compliance	01-FEB-2007	28-FEB-2007	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	1	Returned to Compliance	01-FEB-2000	29-FEB-2000	Yes

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
51	44	SOX	State Compliance achieved	02-JUL-2025	State	Initial LSL Inventory first submitted to MDE on 10/11/2024 (due 10/16/2024); SL Material Notification sent to water customers late (BaltCity only) (due 11/15/2024); Certification of Notification of SL Material and copy of Notice(s) submitted to MDE on 06/23/2025 (due 07/01/2025).
49	39	SIF	State Public Notification received	09-JUL-2024	State	-
50	35	SIF	State Public Notification received	09-JUL-2024	State	-
44	36	SIF	State Public Notification received	09-JUL-2024	State	-
45	37	SIF	State Public Notification received	09-JUL-2024	State	-
46	38	SIF	State Public Notification received	09-JUL-2024	State	-
18	32	SIA	State Violation/Reminder Notice	01-NOV-2022	State	-
18	33	SIA	State Violation/Reminder Notice	01-NOV-2022	State	-
14	8	SOX	State Compliance achieved	30-JUN-2016	State	-
16	31	SOX	State Compliance achieved	10-MAY-2016	State	-
16	29	SOX	State Compliance achieved	10-MAY-2016	State	-
16	30	SOX	State Compliance achieved	10-MAY-2016	State	-
16	11	SOX	State Compliance achieved	10-MAY-2016	State	-
16	12	SOX	State Compliance achieved	10-MAY-2016	State	-
16	13	SOX	State Compliance achieved	10-MAY-2016	State	-
16	14	SOX	State Compliance achieved	10-MAY-2016	State	-
16	15	SOX	State Compliance achieved	10-MAY-2016	State	-
16	16	SOX	State Compliance achieved	10-MAY-2016	State	-
16	17	SOX	State Compliance achieved	10-MAY-2016	State	-
16	18	SOX	State Compliance achieved	10-MAY-2016	State	-
16	19	SOX	State Compliance achieved	10-MAY-2016	State	-
16	20	SOX	State Compliance achieved	10-MAY-2016	State	-
16	21	SOX	State Compliance achieved	10-MAY-2016	State	-
16	22	SOX	State Compliance achieved	10-MAY-2016	State	-
16	23	SOX	State Compliance achieved	10-MAY-2016	State	-
16	24	SOX	State Compliance achieved	10-MAY-2016	State	-
16	25	SOX	State Compliance achieved	10-MAY-2016	State	-
16	26	SOX	State Compliance achieved	10-MAY-2016	State	-
16	27	SOX	State Compliance achieved	10-MAY-2016	State	-
16	28	SOX	State Compliance achieved	10-MAY-2016	State	-
11	4	SOX	State Compliance achieved	30-SEP-2015	State	-
10	3	SOX	State Compliance achieved	31-DEC-2013	State	ENFORCEMENTID :1460075; SEVERITY=1
#0903002	#0900001	EOX	Federal Compliance achieved	30-JUN-2010	ODSWeb	-
4	2	SIF	State Public Notification received	07-MAY-2008	State	ENFORCEMENTID :0840317; CCR REPORT
5	1	SOX	State Compliance achieved	15-MAR-2000	State	ENFORCEMENTID :0020796; SENT 111800; RESEND 2003

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
LIBERTY RESERVOIR	15437	Yes	Reservoir	Surface water	Permanent	Active
SUSQUEHANNA (BALTIMORE PIPE)	15439	Yes	Reservoir	Surface water	Permanent	Active
LOCH RAVEN (BALTIMORE PIPE)	15438	Yes	Reservoir	Surface water	Permanent	Active
ASHBURTON FILTER PLANT	15880	No	Common Headers	-	-	Active
MONTEBELLO FILTER PLANT 1 + 2	15881	No	Common Headers	-	-	Active
MONTEBELLO PLANT 1	15882	No	Common Headers	-	-	Inactive
MONTEBELLO 2	15883	No	Common Headers	-	-	Inactive
DISTRIBUTION SYSTEM	9028	No	Distribution System/Zone	-	-	Active
STORAGE TANK	19317	No	Storage	-	-	Active
ASHBURTON FILTER PLANT	26522	No	Treatment Plant	-	-	Active
MONTEBELLO FILTER PLANT 1 + 2	26523	No	Treatment Plant	-	-	Active
MONTEBELLO PLANT 1	26524	No	Treatment Plant	-	-	Inactive
MONTEBELLO 2	26525	No	Treatment Plant	-	-	Inactive

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
ASHBURTON FILTER PLANT	26522	Hypochlorination, Post	Disinfection
ASHBURTON FILTER PLANT	26522	Hypochlorination, Pre	Disinfection
ASHBURTON FILTER PLANT	26522	pH Adjustment, Post	Corrosion control
ASHBURTON FILTER PLANT	26522	Coagulation	Particulate removal
ASHBURTON FILTER PLANT	26522	Filtration, Rapid Sand	Particulate removal
ASHBURTON FILTER PLANT	26522	Flocculation	Particulate removal
ASHBURTON FILTER PLANT	26522	Sedimentation	Particulate removal
ASHBURTON FILTER PLANT	26522	pH Adjustment, Pre	Particulate removal
ASHBURTON FILTER PLANT	26522	Permanganate	Taste / odor control
ASHBURTON FILTER PLANT	26522	Fluoridation	Other
MONTEBELLO FILTER PLANT 1 + 2	26523	Gaseous Chlorination, Post	Disinfection
MONTEBELLO FILTER PLANT 1 + 2	26523	Gaseous Chlorination, Pre	Disinfection
MONTEBELLO FILTER PLANT 1 + 2	26523	pH Adjustment, Post	Corrosion control
MONTEBELLO FILTER PLANT 1 + 2	26523	Coagulation	Particulate removal
MONTEBELLO FILTER PLANT 1 + 2	26523	Filtration, Rapid Sand	Particulate removal
MONTEBELLO FILTER PLANT 1 + 2	26523	Flocculation	Particulate removal
MONTEBELLO FILTER PLANT 1 + 2	26523	Sedimentation	Particulate removal
MONTEBELLO FILTER PLANT 1 + 2	26523	Permanganate	Taste / odor control
MONTEBELLO FILTER PLANT 1 + 2	26523	Fluoridation	Other
MONTEBELLO PLANT 1	26524	Gaseous Chlorination, Post	Disinfection
MONTEBELLO PLANT 1	26524	Gaseous Chlorination, Pre	Disinfection
MONTEBELLO PLANT 1	26524	pH Adjustment, Post	Corrosion control
MONTEBELLO PLANT 1	26524	Coagulation	Particulate removal
MONTEBELLO PLANT 1	26524	Filtration, Rapid Sand	Particulate removal
MONTEBELLO PLANT 1	26524	Flocculation	Particulate removal
MONTEBELLO PLANT 1	26524	Sedimentation	Particulate removal
MONTEBELLO PLANT 1	26524	Permanganate	Taste / odor control
MONTEBELLO PLANT 1	26524	Fluoridation	Other
MONTEBELLO 2	26525	Gaseous Chlorination, Post	Disinfection
MONTEBELLO 2	26525	Gaseous Chlorination, Pre	Disinfection
MONTEBELLO 2	26525	pH Adjustment, Post	Corrosion control
MONTEBELLO 2	26525	Coagulation	Particulate removal
MONTEBELLO 2	26525	Filtration, Rapid Sand	Particulate removal
MONTEBELLO 2	26525	Flocculation	Particulate removal
MONTEBELLO 2	26525	Sedimentation	Particulate removal
MONTEBELLO 2	26525	Permanganate	Taste / odor control
MONTEBELLO 2	26525	Fluoridation	Other

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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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