OHA Drinking Water Services
OR41
PWS ID: 00935 ---- WASCO, CITY OF
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
7/6/2022  8/2/2022 5 3 years 0.0014 0.017
9/25/2019  -  9/26/201910/8/2019 5 3 years 0.0015 0.030
9/13/2016  -  9/14/20169/23/2016 5 3 years 0.0010 0.020
8/27/2013  -  8/28/20139/9/2013 5 3 years 0 0.018
9/21/2010  10/6/2010 5 3 years 0 0.029
12/3/2007  -  12/4/20071/10/2008 5 3 years 0 0.188
12/13/2004  -  12/14/20042/17/2005 5 3 years 0 0.030
1/1/2001  -  10/15/200111/9/2001 5 3 years 0 0.033
1/1/1997  -  9/30/19977/23/1998 5 1 year 0.0014 0.056
1/1/1996  -  7/11/19963/31/1997 5 1 year 0.0015 0.061
1/1/1995  -  7/12/19957/28/1995 5 1 year 0 0.090
1/1/1994  -  5/1/19946/8/1994 10 6 months 0.0020 0.100
7/1/1993  -  11/1/199311/26/1993 10 6 months 0 0.070


More information for this water system: SDWIS ID 3475
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