OHA Drinking Water Services
OR41
PWS ID: 00134 ---- KELSO WATER ASSN
Lead & Copper

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90th Percentile Summary Results

Sample Dates Date
Received		 Sample
Count		 Frequency Lead
(mg/L)		 Copper
(mg/L)		 Consumer
Notice Date
9/12/2021  9/24/2021 5 3 years 0.0006 0.078
9/10/2018  -  9/12/20189/28/2018 5 3 years 0.0003 0.060
9/27/2015  -  9/28/201510/13/2015 5 3 years 0 0.044
9/17/2012  -  9/21/201210/8/2012 5 3 years 0.0006 0.280
7/27/2009  -  8/6/20099/8/2009 5 3 years 0 0.068
11/16/2005  -  11/22/20051/4/2006 5 3 years 0 0.056
12/9/2002  2/4/2004 5 1 year 0 0.113
1/1/1999  -  8/20/19999/30/1999 5 1 year 0.0014 0.081
1/1/1997  -  7/18/199710/7/1997 5 1 year 0 0.090
1/1/1994  -  6/17/19947/1/1994 10 6 months 0 0.100
7/1/1993  -  7/20/19938/4/1993 10 6 months 0 0.110


More information for this water system: SDWIS ID 3243
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