OHA Drinking Water Services
OR41
PWS ID: 00270 ---- ECHO, CITY OF
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
8/14/2024  9/4/2024 10 3 years 0 0.017
8/26/2021  -  8/27/20219/17/2021 10 3 years 0.0005 0.013
7/16/2018  -  7/17/20187/30/2018 10 3 years 0.0002 0.011
6/15/2015  -  6/16/20156/30/2015 10 3 years 0.0004 0.025
6/27/2012  7/9/2012 10 3 years 0.0006 0.015
8/21/2009  9/8/2009 10 3 years 0.0006 0.014
9/13/2006  1/9/2007 5 3 years 0 0
8/26/2003  10/20/2003 5 3 years 0.0020 0.011
1/1/1999  -  9/13/200010/30/2000 10 3 years 0.0010 0.020
1/1/1997  -  11/13/199710/12/1998 10 1 year 0.0016 0.009
1/1/1996  -  10/29/199610/12/1998 10 1 year 0.0013 0.013
1/1/1995  -  6/15/19957/19/1995 10 1 year 0 0
1/1/1994  -  2/24/19943/31/1994 20 6 months 0.0050 0
7/1/1993  -  8/3/19938/20/1993 20 6 months 0 0.050


More information for this water system: SDWIS ID 3722
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