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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.

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Violations

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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	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	35	Returned to Compliance	17-NOV-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	34	Returned to Compliance	18-SEP-2025	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	32	Returned to Compliance	01-JUL-2025	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	33	Returned to Compliance	01-JUL-2025	30-SEP-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	31	Returned to Compliance	01-APR-2025	30-JUN-2025	Yes
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	30	Returned to Compliance	11-FEB-2025	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	29	Returned to Compliance	01-JUL-2023	-	No
MON	Monitoring, Additional Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	28	Returned to Compliance	01-APR-2023	30-APR-2023	No
RPT	Reporting, Assessment Forms (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	27	Returned to Compliance	01-JAN-2023	-	No
TT	Treatment Technique, Level 1 Assessment (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	26	Returned to Compliance	01-JAN-2023	-	Yes
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	20	Returned to Compliance	01-APR-2019	30-JUN-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	23	Known	01-APR-2019	30-JUN-2019	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	17	Returned to Compliance	31-DEC-2016	-	No
RPT	Reporting, Assessment Forms (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	19	Returned to Compliance	10-DEC-2016	-	No
TT	Failure To Address Deficiency	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	18	Returned to Compliance	01-NOV-2016	-	Yes
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	15	Returned to Compliance	01-JUL-2016	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	14	Returned to Compliance	26-MAY-2016	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	13	Returned to Compliance	26-MAY-2016	-	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	10	Returned to Compliance	01-MAY-2015	31-MAY-2015	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	11	Returned to Compliance	01-APR-2015	30-APR-2015	No
MR	Monitoring of Treatment (SWTR-Filter)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	12	Returned to Compliance	01-APR-2015	30-APR-2015	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	8	Returned to Compliance	01-JUL-2013	31-JUL-2013	Yes
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	9	Returned to Compliance	01-JUL-2013	31-JUL-2013	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	7	Returned to Compliance	01-JUL-2012	31-JUL-2012	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6	Returned to Compliance	01-JUL-2011	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chloramine	5	Returned to Compliance	01-JAN-2010	31-MAR-2010	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	4	Returned to Compliance	01-AUG-2009	31-AUG-2009	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3	Returned to Compliance	01-JAN-2009	31-JAN-2009	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2	Returned to Compliance	01-SEP-2008	30-SEP-2008	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	1	Returned to Compliance	01-JUL-2007	-	No

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Enforcement Actions

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Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
62	35	SOX	State Compliance achieved	18-NOV-2025	Region	Respondent submitted the operational evaluation level report to EPA on November 18, 2025. Therefore, the System has returned to compliance with 40 C.F.R. § 141.626(b)(1).
59	34	EO+	Federal no additional Formal Action needed	13-NOV-2025	Region	Respondent provided a Tier 2 public notice to all persons served by the System on September 19, 2025. Therefore, the System has returned to compliance with 40 C.F.R. § 141.203(b)(1) and 141.201(c)(1) effective September 19, 2025. Samples were collected November 5, 2025 at Building 218 to meet the monitoring requirements of 40 C.F.R. § 141.621 for the October 1 to December 31, 2025 monitoring period. The November 5, 2025 sample result was 0.0342 mg/L for total trihalomethanes (“TTHM”). The Locational Running Annual Average (LRAA) at Building 218 for the October 1 to December 31, 2025 monitoring period was 0.077 mg/L, based on the average of the following samples: 1. November 5, 2025 – 0.034 mg/L TTHM, 2. August 6, 2025 – 0.057 mg/L TTHM, 3. May 7, 2025 – 0.20 mg/L TTHM, and 4. February 5, 2025 – 0.019 mg/L TTHM. Based on four consecutive quarters of monitoring, the TTHM LRAA at Building 218 was below the maximum contaminant level (“MCL”) for TTHM of 0.080 mg/L for the October 1 to December 31, 2025 monitoring period. Therefore, the System has returned to compliance with the MCL for TTHM at 40 C.F.R. § 141.64(b)(2). Closeout letter for Docket No. SDWA-03-2025-007-VS and SDWA-03-2026-001-VS signed 1/12/26 and emailed to System 1/13/26.
59	33	EO+	Federal no additional Formal Action needed	13-NOV-2025	Region	Respondent provided a Tier 2 public notice to all persons served by the System on September 19, 2025. Therefore, the System has returned to compliance with 40 C.F.R. § 141.203(b)(1) and 141.201(c)(1) effective September 19, 2025. Samples were collected November 5, 2025 at Building 218 to meet the monitoring requirements of 40 C.F.R. § 141.621 for the October 1 to December 31, 2025 monitoring period. The November 5, 2025 sample result was 0.0342 mg/L for total trihalomethanes (“TTHM”). The Locational Running Annual Average (LRAA) at Building 218 for the October 1 to December 31, 2025 monitoring period was 0.077 mg/L, based on the average of the following samples: 1. November 5, 2025 – 0.034 mg/L TTHM, 2. August 6, 2025 – 0.057 mg/L TTHM, 3. May 7, 2025 – 0.20 mg/L TTHM, and 4. February 5, 2025 – 0.019 mg/L TTHM. Based on four consecutive quarters of monitoring, the TTHM LRAA at Building 218 was below the maximum contaminant level (“MCL”) for TTHM of 0.080 mg/L for the October 1 to December 31, 2025 monitoring period. Therefore, the System has returned to compliance with the MCL for TTHM at 40 C.F.R. § 141.64(b)(2). Closeout letter for Docket No. SDWA-03-2025-007-VS and SDWA-03-2026-001-VS signed 1/12/26 and emailed to System 1/13/26.
60	31	EOX	Federal Compliance achieved	05-NOV-2025	Region	Samples were collected November 5, 2025 at Building 218 to meet the monitoring requirements of 40 C.F.R. § 141.621 for the October 1 to December 31, 2025 monitoring period. The November 5, 2025 sample result was 0.0342 mg/L for total trihalomethanes (“TTHM”). The Locational Running Annual Average (LRAA) at Building 218 for the October 1 to December 31, 2025 monitoring period was 0.077 mg/L, based on the average of the following samples: 1. November 5, 2025 – 0.034 mg/L TTHM, 2. August 6, 2025 – 0.057 mg/L TTHM, 3. May 7, 2025 – 0.20 mg/L TTHM, and 4. February 5, 2025 – 0.019 mg/L TTHM. Based on four consecutive quarters of monitoring, the TTHM LRAA at Building 218 was below the maximum contaminant level (“MCL”) for TTHM of 0.080 mg/L for the October 1 to December 31, 2025 monitoring period. Therefore, the System has returned to compliance with the MCL for TTHM at 40 C.F.R. § 141.64(b)(2). Closeout letter for Docket No. SDWA-03-2025-007-VS and SDWA-03-2026-001-VS signed 1/12/26 and emailed to System 1/13/26.
56	32	EOX	Federal Compliance achieved	01-AUG-2025	Region	The System submitted the revised Consumer Confidence Report (CCR) that includes the service line inventory language required by 40 C.F.R. § 141.153(d)(4)(xi) (July 1, 2023) to EPA on July 28, 2025. The System distributed the revised CCR to customers on July 31, 2025, and provided the Public Notification and Consumer Confidence Report (CCR) Certification Form to EPA on August 1, 2025. Therefore, the System has returned to compliance with 40 C.F.R. § 141.153(d)(4)(xi) (July 1, 2023) effective August 1, 2025.
54	30	EO+	Federal no additional Formal Action needed	25-MAR-2025	Region	The System submitted the sample volumes to EPA on February 11, 2025, returning the System to compliance with 40 C.F.R. § 141.860(d)(1).
51	29	EO+	Federal no additional Formal Action needed	27-JUL-2023	Region	The Navy Yard PWS submitted its calendar year 2022 CCR to EPA on July 5, 2023. As such, it has returned to compliance with 40 CFR §141.155(c) requiring community water systems to provide a copy of the CCR to the primacy agency. Therefore, they have returned to compliance effective 7/5/23.
48	28	EO+	Federal no additional Formal Action needed	01-JUN-2023	Region	The System collected the repeat samples triggered by the total coliform-positive result on 4/10/2023. Therefore, they have returned to compliance effective 4/10/23.
45	27	EO+	Federal no additional Formal Action needed	19-APR-2023	Region	The System submitted a Level 1 assessment triggered by total coliform-positive results in the January 2023 monitoring period on March 3, 2023. As such, it has returned to compliance with 40 CFR §141.859(b)(3)(i) requiring water systems to submit a Level 1 assessment to the primacy agency.
45	26	EO+	Federal no additional Formal Action needed	19-APR-2023	Region	The System submitted a Level 1 assessment triggered by total coliform-positive results in the January 2023 monitoring period on March 3, 2023. As such, it has returned to compliance with 40 CFR §141.859(b)(3)(i) requiring water systems to submit a Level 1 assessment to the primacy agency.
42	18	EOX	Federal Compliance achieved	13-MAR-2023	Region	EPA terminated the September 18, 2020 Administrative Order for Compliance (Order) on March 13, 2023. As required by the Order and Supplemental CAP, the Navy created an inventory of backflow prevention devices and implemented a process for annual testing of backflow prevention devices and repair or replacement of devices within ten (10) days of the device failure. The Navy provided EPA with quarterly reports documenting the testing and repair or replacement of backflow prevention devices. The quarterly reports provided by the Navy to EPA for the 2022 calendar year (i.e. 2022 Quarters 1, 2, 3, and 4) demonstrate four consecutive quarters of successful compliance with the Orders and Supplemental CAP. Therefore, pursuant to Paragraph 52 of the Order, EPA terminated the Order effective March 13, 2023.
35	20	EIA	Federal Violation/Reminder Notice	23-JAN-2020	Region	-
35	23	EIA	Federal Violation/Reminder Notice	23-JAN-2020	Region	-
38	19	EOX	Federal Compliance achieved	10-JAN-2020	Region	-
34	17	EIA	Federal Violation/Reminder Notice	19-APR-2017	Region	Notice of Violation delivered to U.S. Navy via phone call with Roberta Person, NAVFAC HQ, SDWA Compliance
32	15	EIA	Federal Violation/Reminder Notice	04-NOV-2016	Region	-
27	13	EIA	Federal Violation/Reminder Notice	28-JUL-2016	Region	-
29	14	EIA	Federal Violation/Reminder Notice	28-JUL-2016	Region	-
24	10	EOX	Federal Compliance achieved	01-JUN-2015	Region	-
26	12	EOX	Federal Compliance achieved	26-MAY-2015	Region	-
26	11	EOX	Federal Compliance achieved	26-MAY-2015	Region	-
21	9	EOX	Federal Compliance achieved	01-AUG-2013	Region	-
21	8	EOX	Federal Compliance achieved	01-AUG-2013	Region	-
19	7	EOX	Federal Compliance achieved	08-SEP-2012	Region	-
17	6	EOX	Federal Compliance achieved	05-AUG-2011	Region	-
11	5	EOX	Federal Compliance achieved	15-MAR-2010	Region	#1000302
14	3	EIF	Federal Public Notification received from PWS	23-FEB-2010	Region	-
8	4	EOX	Federal Compliance achieved	14-SEP-2009	Region	#0900200
2	2	EOX	Federal Compliance achieved	06-NOV-2008	Region	#0900100
1	1	EOX	Federal Compliance achieved	08-AUG-2007	Region	#0700001

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All Facilities

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Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC-FROM WASA	10	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	11	No	Distribution System/Zone	-	-	Active
IDSE DISTRIBUTION	22	No	Distribution System/Zone	-	-	Active

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Treatment Processes

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No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.

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