OHA Drinking Water Services
OR41
PWS ID: 00549 ---- TRI-CITY JW&SA
Lead & Copper

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Corrosion Control
Service Lines
90th Percentile Summary Results

Sample Dates Date
Received		 Sample
Count		 Frequency Lead
(mg/L)		 Copper
(mg/L)		 Consumer
Notice Date
8/31/2022  -  9/7/20229/28/2022 20 3 years 0.0070 0.119
8/21/2019  -  8/30/201910/2/2019 20 3 years 0.0050 0.133 10/17/2019
6/23/2016  -  6/28/20167/9/2016 20 3 years 0.0040 0.147 8/5/2016
6/16/2013  -  6/18/20137/2/2013 20 3 years 0.0060 0.089
8/5/2010  -  8/10/20108/23/2010 20 3 years 0.0030 0.167
8/15/2007  9/7/2007 20 3 years 0.0070 0.202
8/20/2004  -  8/25/20049/7/2004 20 3 years 0.0080 0.174
1/1/2001  -  1/23/20015/21/2001 20 3 years 0.0013 0.188
1/1/1997  -  8/13/19972/5/1998 20 1 year 0 0.332
1/1/1996  -  8/14/19969/13/1996 20 1 year 0.0030 0.528
1/1/1995  -  9/14/199510/6/1995 20 1 year 0.0020 0.250
1/1/1994  -  5/18/19947/5/1994 40 6 months 0 0.130
7/1/1992  -  12/8/199210/20/1993 40 6 months 0.0045 0.085


More information for this water system: SDWIS ID 3973
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