OHA Drinking Water Services
OR41
PWS ID: 01420 ---- WALLOWA LAKE CO SERVICE DIST
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
7/21/2020  8/7/2020 5 3 years 0.0003 0.005
9/30/2016  10/27/2016 5 3 years 0.0005 0.013
6/4/2013  6/17/2013 5 3 years 0.0050 0.300
6/21/2010  8/6/2010 5 3 years 0.0034 0.278
7/11/2007  8/3/2007 10 3 years 0.0020 0.770
7/12/2004  4/20/2005 5 1 year 0.0010 0.040
10/28/2002  5/21/2003 5 6 months 0 0
1/2/2002  -  1/7/200210/21/2002 5 6 months 0 0.011
12/31/2001  10/21/2002 5 1 year 0 0
1/1/1995  -  3/14/19954/14/1995 10 6 months 0.0015 0.370
7/1/1994  -  9/2/199411/14/1994 10 6 months 0.0030 0.920


More information for this water system: SDWIS ID 3855
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