OHA Drinking Water Services
OR41
PWS ID: 00457 ---- LAKE OSWEGO MUNICIPAL WATER


Water System History    -   Click here for Detail View
Date of
Status Change		 Active or
Inactive		 Primary
Source		 PWS
Type		 Population PWS
Name
Current Status
08/09/2022		ASWPC40,000        LAKE OSWEGO MUNICIPAL WATER
08/09/2022ASWPC 36,453        LAKE OSWEGO MUNICIPAL WATER
01/02/2020ASW C 36,453        LAKE OSWEGO MUNICIPAL WATER
07/30/2019ASW C 36,093        LAKE OSWEGO MUNICIPAL WATER
05/20/2009ASW C 71,843        LAKE OSWEGO MUNICIPAL WATER
09/25/2007ASW C 35,750        LAKE OSWEGO MUNICIPAL WATER
12/28/2004ASW C 36,700        LAKE OSWEGO MUNICIPAL WATER
10/18/2004ASW C 33,145        LAKE OSWEGO MUNICIPAL WATER


Annual Operating Period History
Population
Type		 Avg Daily
Population		 Start
Month		 Start
Day		 End
Month		 End
Day		 Effective
Begin Date		 Effective
End Date
Residential4000011123106/29/2022
Residential3645311123106/26/201906/28/2022
Residential3609311123109/25/200706/25/2019
Residential3575011123109/15/200409/24/2007
Residential33145111231First Record09/14/2004



More information for this water system: SDWIS ID 4106
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
Lead & Copper  ::  DBP Sample Sites  ::  FANLs  ::  MRDL  ::  GWR 4-Log  ::  Turbidity  ::  SWTR  ::  LRAA  ::  DW Source Protection
PFAS data are now located on the Chemical Results page.
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