OHA Drinking Water Services
OR41
PWS ID: 00826 ---- SISTERS, CITY OF
Lead & Copper

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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
9/10/2024  9/12/20249/25/2024 10 1 year 0 0.103
9/13/2023  9/14/20239/29/2023 10 1 year 0.0012 0.106
7/26/2022  9/6/20229/19/2022 20 6 months 0.0017 0.131
1/11/2022  1/12/20221/27/2022 20 6 months 0.0068 0.317
9/20/2021  9/22/202110/1/2021 10 3 years 0.0032 0.199
8/13/2018  8/15/20188/27/2018 10 3 years 0.0020 0.191
9/15/2015  9/19/201510/20/2015 10 3 years 0.0030 0.270
9/12/2012  10/5/2012 10 3 years 0 0.264
7/9/2009  8/25/2009 10 3 years 0 0.205
7/6/2006  7/18/20068/25/2006 10 3 years 0 0.162
11/5/2003  12/22/2003 10 3 years 0 0.200
1/1/1999  7/18/20009/1/2000 10 3 years 0.0030 0.180
1/1/1997  7/18/199711/13/1997 10 1 year 0 0.210
1/1/1996  7/17/199610/8/1996 10 1 year 0.0029 0.157
1/1/1995  6/22/19957/21/1995 10 1 year 0.0057 0.166
1/1/1994  1/25/19944/4/1994 20 6 months 0.0076 0.166
1/1/1993  4/30/19939/10/1993 20 6 months 0.0030 0.230



More information for this water system: SDWIS ID 3911

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