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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDMI0003968
PWS NameLYON TOWNSHIP
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served9390
County ServedOakland

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
MRLead Consumer NoticeLead and Copper RuleLead and Copper Rule134Returned to Compliance01-OCT-2025 - No
RPTNotification, Known or Potential LSLLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS133Open02-JUL-2025 - No
MRMonitoring, RegularNitrate RuleNitrate132Known01-JAN-202531-DEC-2025No
OtherFailure to Consult with StateGround Water RuleGroundwater Rule106Returned to Compliance09-NOV-2020 - No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM107Returned to Compliance01-SEP-202031-AUG-2021No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)108Returned to Compliance01-SEP-202031-AUG-2021No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)104Returned to Compliance01-AUG-200431-AUG-2004Yes
  • 1 - 7 of 7

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
424132SIEState Public Notification requested12-DEC-2025State -
428133SIEState Public Notification requested12-DEC-2025State -
432134SOXState Compliance achieved16-OCT-2025State -
411107SOXState Compliance achieved02-NOV-2021State -
411108SOXState Compliance achieved02-NOV-2021State -
407106SIAState Violation/Reminder Notice22-DEC-2020State -
304104SIFState Public Notification received01-SEP-2004State -
  • 1 - 7 of 7

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
CARRIAGE CLUB STANDBY WELL 19018YesWell Ground waterEmergencyInactive
WOODWIND WELL 29202YesWell Ground waterPermanentActive
WOODWIND WELL 19201YesWell Ground waterPermanentActive
SOUTH HILL WELL #26704YesWell Ground waterPermanentActive
SOUTH HILL WELL #15148YesWell Ground waterPermanentActive
TANGLEWOOD WELL 29199YesWell Ground waterEmergencyInactive
TANGLEWOOD WELL 19198YesWell Ground waterEmergencyInactive
CARRIAGE CLUB STANDBY WELL 29019YesWell Ground waterEmergencyInactive
SOUTH HILL WELLS 1 & 28444NoCommon Headers - - Inactive
CARRIAGE CLUB WELLS 1&29020NoCommon Headers - - Inactive
TANGLEWOOD WELLS9200NoCommon Headers - - Inactive
DISTRIBUTION SYSTEM4174NoDistribution System/Zone - - Active
EAST TOWER7241NoStorage - - Active
WEST TOWER8751NoStorage - - Active
CARRIAGE CLUB HYDROPNEUMATIC TANK9021NoStorage - - Inactive
TANGLEWOOD HYDROPNEUMATIC9204NoStorage - - Inactive
WOODWIND HYDROPNEUMATIC9205NoStorage - - Inactive
SOUTH HILL TREATMENT PLANT8306NoTreatment Plant - - Active
WOODWIND SOFTENING TREATMENT PLANT89662NoTreatment Plant - - Active
WOODWIND TREATMENT PLANT9203NoTreatment Plant - - Active
  • 1 - 20 of 20

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
SOUTH HILL TREATMENT PLANT8306Hypochlorination, PostDisinfection
WOODWIND SOFTENING TREATMENT PLANT89662pH Adjustment, PreSoftening (hardness removal)
WOODWIND SOFTENING TREATMENT PLANT89662SedimentationSoftening (hardness removal)
WOODWIND TREATMENT PLANT9203Hypochlorination, PostDisinfection
WOODWIND TREATMENT PLANT9203Filtration, Pressure SandIron removal
  • 1 - 5 of 5

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.