OHA Drinking Water Services
OR41
PWS ID: 00587 ---- ONTARIO, CITY OF
Violation History

Violations are displayed for the last 5 years only.
Group Abbreviations:  SWTR = Surface Water Treatment Rule, TCR = Total Coliform Rule
Gray shading indicates return to compliance. 

Hide Auto-RTC  |  Hide Determination Dates  |  Return to default sort order
Go to public notices
Violation
Number		Auto-
RTC?		Monitoring Period
Begin
End 		Determination
Date		Facility
ID		 Analyte
Group		 Violation Type - Analyte Count
Show analytes for all violations 		Enforcement Action - Date
Show history 		Points Contact
Report
901707617YMar 01, 2023 Mar 31, 2023Apr 20, 2023WTP-A1 SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes Returned To Compliance - May 02, 2023 1
901707616YMar 01, 2023 Mar 31, 2023Apr 20, 2023WTP-A2 SWTR Monthly SW Report - Late/Nonreporting - 3  Show analytes Returned To Compliance - May 02, 2023 1
901707611YJan 01, 2023 Jan 31, 2023Feb 13, 2023 TCR Routine Coliform - Did Not Report Enough - 1 Returned To Compliance - Feb 14, 2023 1
SYSTEM SCORE SUMMARY
Learn about system scores		Unaddressed Points:
Number of years the oldest violation has been unaddressed (n):
System Score:
Points under formal enforcement:
Points RTC'd: 		0
0
0
0
3

Violation history was last updated on 10/24/2025, 64 hours ago.

For questions regarding these violations contact either:

More information for this water system: SDWIS ID 3898
System Info  ::  Report for Lenders  ::  Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Contacts & Advisories  ::  Site Visits  ::  Public Notice
Coliform Summary  ::  Coliform Results  ::  Coliform Schedules  ::  LT2  ::  GW/GWUDI Source Details  ::  Plan Review  ::  Annual Fee
Chemical Summary  ::  Chemical Results  ::  Chemical Schedules  ::  Chemical Schedule Summary  ::  Arsenic RAA  ::  Cyanotoxins  ::  PFAS
Lead & Copper  ::  DBP Sample Sites  ::  FANLs  ::  MRDL  ::  GWR 4-Log  ::  Turbidity  ::  SWTR  ::  LRAA  ::  DW Source Protection
Information for all water systems:
Water System Inventory  ::  Water System Surveys  ::  Outstanding Performers  ::  Treatment Plant Inspections  ::  Treatment  ::  Plan Reviews
Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Deficiencies  ::  System Scores  ::  Exceedances  ::  Public Notices  ::  Service Lines
Water Advisories  ::  Contact Reports  ::  Cyanotoxins  ::  PFAS  ::  Post-wildfire VOCs  ::  Fluoride  ::  Certification List  ::  DW Source Protection
Main menu:
Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules
Need help? Email Drinking Water Services for assistance.Staff/Partner Login