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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDWA5357250
PWS NameMOUNTLAKE TERRACE CITY OF
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water purchased
Primacy TypeState
Is Wholesaler?Yes
Population Served26402
County ServedSnohomish

Note


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.

PWS Violation


Violations

Violation Category CodeViolation Type DescriptionRule NameContaminant NameViolation IDCompliance Status DescriptionCompliance Period Begin DateCompliance Period End DateIs Health Based Ind
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule2462917Returned to Compliance01-JUL-2024 - No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM2625082Returned to Compliance01-JAN-202031-MAR-2020No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)2625083Returned to Compliance01-JAN-202031-MAR-2020No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM2374032Returned to Compliance01-JAN-201931-MAR-2019No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule1742371Returned to Compliance01-JUL-2017 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule1640102Returned to Compliance01-JUL-2016 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule1538005Returned to Compliance01-JUL-2015 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule1435765Returned to Compliance01-JUL-2014 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule1333706Returned to Compliance01-JUL-2013 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule1231686Returned to Compliance01-JUL-2012 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule1129444Returned to Compliance01-JUL-2011 - No
MRMonitoring, Repeat Minor (TCR)Total Coliform RuleColiform (TCR)9202069Known01-SEP-199230-SEP-1992No
  • 1 - 12 of 12

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
62917ENF2462917SOXState Compliance achieved20-FEB-2025State -
2625083ENF2625083SOXState Compliance achieved23-JUN-2020State -
2625082ENF2625082SOXState Compliance achieved23-JUN-2020State -
2374032ENF2374032SOXState Compliance achieved11-JUN-2019State -
42371ENF1742371SOXState Compliance achieved31-JAN-2018State -
40102ENF1640102SOXState Compliance achieved19-OCT-2016State -
38005ENF1538005SOXState Compliance achieved15-SEP-2015State -
35765ENF1435765SOXState Compliance achieved08-OCT-2014State -
33706ENF1333706SOXState Compliance achieved13-SEP-2013State -
31686ENF1231686SOXState Compliance achieved28-SEP-2012State -
29444ENF1129444SOXState Compliance achieved23-AUG-2011State -
92244779202069SIAState Violation/Reminder Notice30-SEP-1992State -
  • 1 - 12 of 12

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
49270R/Lynnwood (1)20694YesConsecutive ConnectionSurface waterEmergencyActive
39600E/Shoreline (2)20695YesConsecutive ConnectionSurface waterEmergencyActive
49270R/LYNNWOOD20696YesConsecutive ConnectionGround waterEmergencyInactive
39600E/SHORELINE20697YesConsecutive ConnectionGround waterEmergencyInactive
39600E/SHORELINE20698YesConsecutive ConnectionGround waterEmergencyInactive
01300E/Alderwood (3)20693YesConsecutive ConnectionSurface waterPermanentActive
Purchased surface water4049NoTreatment Plant - - Active
  • 1 - 7 of 7

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
Purchased surface water4049Hypochlorination, PostDisinfection
  • 1 - 1 of 1

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.