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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDWI6630259
PWS NameONTARIO WATERWORKS
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served554
County ServedVernon

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
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule2500032Returned to Compliance01-JUL-202531-JUL-2025No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM2600036Known01-JAN-202531-DEC-2025No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)2600035Known01-JAN-202531-DEC-2025No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice2500030Open17-OCT-2024 - No
TTLSL InventoryLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS2500029Returned to Compliance17-OCT-2024 - Yes
MRMonitoring, Routine Minor (TCR)Total Coliform RuleColiform (TCR)0900010Returned to Compliance01-APR-200930-APR-2009No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine0900011Returned to Compliance01-APR-200930-JUN-2009No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)0600009Returned to Compliance01-JUN-200630-JUN-2006Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)0200008Returned to Compliance01-OCT-200131-OCT-2001Yes
MRMonitoring, Routine Minor (TCR)Total Coliform RuleColiform (TCR)9800006Returned to Compliance01-JUN-199830-JUN-1998No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9800005Returned to Compliance01-MAY-199831-MAY-1998Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9800004Returned to Compliance01-OCT-199731-OCT-1997Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9600003Returned to Compliance01-MAY-199631-MAY-1996Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9500002Returned to Compliance01-MAY-199531-MAY-1995Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9410133Returned to Compliance01-AUG-199431-AUG-1994Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9400001Returned to Compliance01-AUG-199431-AUG-1994Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9404565Returned to Compliance01-OCT-199331-OCT-1993Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9304051Returned to Compliance01-AUG-199331-AUG-1993Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9303586Returned to Compliance01-MAY-199331-MAY-1993Yes
  • 1 - 19 of 19

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
26000562600036SIEState Public Notification requested28-OCT-2025State -
26000562600035SIEState Public Notification requested28-OCT-2025State -
25000522500032SIEState Public Notification requested28-AUG-2025State -
99999000000000000012500029EIAFederal Violation/Reminder Notice18-JUN-2025ODSWeb -
09000420900011SIFState Public Notification received03-JUN-2009State -
09000420900010SIFState Public Notification received03-JUN-2009State -
06000390600009SOXState Compliance achieved21-JUN-2006State -
02000350200008SIFState Public Notification received30-NOV-2001State -
98000279800006SIFState Public Notification received25-AUG-1998State -
98000229800005SFGState Public Notification issued18-JUN-1998State -
98000189800004SOXState Compliance achieved27-OCT-1997State -
96000149600003SIFState Public Notification received01-JUL-1996State -
96000109500002SIFState Public Notification received05-OCT-1995State -
94101309410133SIFState Public Notification received13-SEP-1994State -
94000039400001SIFState Public Notification received13-SEP-1994State -
94070669404565SOXState Compliance achieved06-JAN-1994State -
93069739304051SIFState Public Notification received20-OCT-1993State -
93048629303586SIFState Public Notification received19-JUL-1993State -
  • 1 - 18 of 18

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
BH0941YesWell Ground waterPermanentActive
XZ7032YesWell Ground waterPermanentActive
6630259966302599NoDistribution System/Zone - - Active
BH0941TNoTreatment Plant - - Active
XZ7032TNoTreatment Plant - - Active
  • 1 - 5 of 5

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
BH0941THypochlorination, PreDisinfection
XZ7032THypochlorination, PreDisinfection
  • 1 - 2 of 2
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.