OHA Drinking Water Services
OR41
PWS ID: 00695 ---- HIDDEN VALLEY MBL ESTS IMP DIS
Lead & Copper

More Information
Summary Results
Detailed Results
Corrosion Control
Service Lines
90th Percentile Summary Results

Sample Dates Date
Received		 Sample
Count		 Frequency Lead
(mg/L)		 Copper
(mg/L)		 Consumer
Notice Date
8/9/2025  -  8/11/20258/30/2025 5 3 years 0.0009 0.015
7/25/2022  8/10/2022 5 3 years 0 0.014
6/24/2019  7/3/2019 5 3 years 0.0010 0.023
6/18/2016  -  6/20/20167/7/2016 5 3 years 0 0.011
7/5/2013  9/6/2013 5 3 years 0 0.043
8/13/2010  10/4/2010 5 3 years 0 0.025
6/19/2007  8/1/2007 5 3 years 0.0050 0.043
2/10/2004  -  2/17/200412/28/2005 5 3 years 0.0010 0.023
1/1/2001  -  7/17/20017/30/2001 5 3 years 0.0070 0.037
1/1/1997  -  9/21/19975/22/1998 5 1 year 0.0019 0.160
1/1/1996  -  11/3/199612/12/1996 5 1 year 0.0010 0.240
1/1/1995  -  9/13/199510/2/1995 5 1 year 0.0061 0.191
1/1/1994  -  2/15/19943/11/1994 10 6 months 0.0020 0.050
7/1/1993  -  8/1/19938/27/1993 10 6 months 0.0020 0.070


More information for this water system: SDWIS ID 3783
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