OHA Drinking Water Services
OR41
PWS ID: 91716 ---- TANGENT ELEMENTARY
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
4/30/2024  5/10/2024 7 6 months 0.0008 0.353
10/20/2023  10/26/2023 10 6 months 0.0028 0.405
2/22/2023  2/24/2023 5 6 months 0 0.245
7/13/2022  7/18/2022 10 6 months 0.0044 0.430
9/21/2018  5 3 years 0.0039 0.374
6/3/2015  5 3 years 0.0074 0.210
8/9/2012  5 3 years 0.0083 0.210
10/23/2009  11/4/2009 5 3 years 0.0032 0.130
9/27/2006  10/2/2006 5 3 years 0 0
5/1/2003  6/9/2003 5 3 years 0 0
1/1/2001  8/21/20019/20/2001 5 1 year 0.0040 0.070
1/1/1999  11/4/19992/24/2000 5 1 year 0.0175 1.044
1/1/1998  8/21/19989/29/1998 5 1 year 0.0100 1.130
7/1/1995  12/18/19952/8/1996 10 6 months 0.0050 0.010
7/1/1993  12/20/19931/13/1994 10 6 months 0.0050 0



More information for this water system: SDWIS ID 1001
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
New! Visit our new Drinking Water Source Protection 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

Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules

Need help? Email Drinking Water Services for assistance.Staff/Partner Login