FEB 2 0 20ft
MEMORANDUM
SUBJECT:
FROM:
TO:
             Reporting Chemical/Radionuclidc Maximum Contaminant Level
             Violations to SDWIS/Fed with Appropriate Compliance Period End Dates
             Edward J. Messina. Director  X ,„-
             Monitoring, Assistance, and M-ecfia
             Office of Compliance
                                         f"
             Mark Pollins. Director    /
             Water Enforcement Division
             Office of Civil Enforcement
                                             V
             Ronald W. Bergman, Acting Directo/' •/-" f y',> '1, -''"
             Drinking Water Protection Division
             Office of Ground Water and Drinking Water

             Water Division Directors. Regions 1-10
             Drinking Water Branch Chiefs, Regions 1-10
             Drinking Water Enforcement Managers, Regions 1-10
             Compliance Assistance Coordinators, Regions 1-10
We have noticed that some states are reporting chemical and radionuclide maximum
contaminant level (MCI,) violations to the Safe Drinking Water Information System/Federal
System (SDWIS/Fed) using an inappropriate compliance period end date (i.e.. the date entered
extends beyond the appropriate compliance period for the contaminant} s] at issue). This
memorandum clarifies that, consistent with SDWIS data entry instructions, primacy agencies are
to report MCL violations for these contaminants with a compliance period end date that is the date
the monitoring period ends. Wre will keep you informed if there are updates to these reporting
requirements. Please also remind your states that a public water system (PWS) with an ongoing,
uncorrected MCL violation must continue to collect samples in accordance with the monitoring
and reporting requirements established by regulation for that contaminant, and states must report
new MCL violations to SDWIS/Fed with the appropriate compliance period end date.

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Please note these new MCL violations will each contribute five points to a PWS's Enforcement
Targeting Tool (ETT) score. Please take appropriate action to ensure that uncorrected violations
are addressed in accordance with EPA's 2009 Safe Drinking Water Act Enforcement Response
Policy, Each PWS with ongoing, uncorrected MCL violations must also provide the required
public notifications.

We thank you for your help in ensuring the consistent reporting of compliance period end dates to
SDWIS/Fed, If you have any questions, please contact Ken Harmon of the Office of Compliance
at 202-564-7049, or Ed Moriarty at 202-564-3864.
cc:     Mindy Eisenberg, Chief, Protection Branch, Drinking Water Protection Division,
       Office of Ground Water and Drinking Water
       Loren Denton, Chief, Municipal Enforcement Branch Water Enforcement Division, Office
       of Civil Enforcement
       Martha Segall, Chief, Water Branch,  Monitoring, Assistance, and Media Division,
       Office of Compliance

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