U.S. flag

An official website of the United States government

Contact Us

Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Related Topics: EPA Home » Your Drinking Water » SDWIS Federal Reporting Services » Report Options » SDWIS PWS Search

Nav Menu

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDIL0313150
PWS NameWESTCHESTER
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water purchased
Primacy TypeState
Is Wholesaler?No
Population Served16241
County ServedCook

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
RPTNotification, Known or Potential LSLLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS2228611Open02-JUL-2025 - No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM2228609Returned to Compliance01-OCT-202431-DEC-2024No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)2228610Returned to Compliance01-OCT-202431-DEC-2024No
MRLead Consumer NoticeLead and Copper RuleLead and Copper Rule2228606Returned to Compliance30-DEC-2020 - No
TTPublic EducationLead and Copper RuleLead and Copper Rule2227993Returned to Compliance01-JAN-1993 - Yes
TTOCCT/SOWT Study/RecommendationLead and Copper RuleLead and Copper Rule1916393Returned to Compliance07-DEC-1992 - Yes
  • 1 - 6 of 6

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
47442142228609SIFState Public Notification received11-AUG-2025State -
47442142228610SIFState Public Notification received11-AUG-2025State -
47442132228611SIEState Public Notification requested03-JUL-2025State -
47442072228606SOXState Compliance achieved13-JAN-2021State -
47438951916393SOXState Compliance achieved08-AUG-1995State -
1036942227993SIEState Public Notification requested30-MAR-1994State -
  • 1 - 6 of 6

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
CC 01-PUMPING STATION25913YesConsecutive ConnectionSurface waterPermanentActive
WESTCHESTER23417NoDistribution System/Zone - - Active
IDSE34690NoDistribution System/Zone - - Active
SCHOOL LEAD SAMPLING46712NoDistribution System/Zone - - Active
CHILDCARE FACILITY LEAD SAMPLING46713NoDistribution System/Zone - - Active
GENERIC FINISHED SAMPLING STATION27076NoSampling Station - - Active
GENERIC RAW SAMPLING STATION29498NoSampling Station - - Active
ELEV01-2.0 MG ELEVATED TANK11013NoStorage - - Active
GR01-GROUND STORAGE AT TAP0112077NoStorage - - Active
TP 01-PUMPING STATION31952NoTreatment Plant - - Active
  • 1 - 10 of 10

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TP 01-PUMPING STATION31952Gaseous Chlorination, PreDisinfection
  • 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.