OHA Drinking Water Services
OR41
PWS ID: 91899 ---- WILLIAMS ELEMENTARY
Lead & Copper

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Detailed Results
Corrosion Control
Service Lines
90th Percentile Summary Results

Sample Dates Date
Received		 Sample
Count		 Frequency Lead
(mg/L)		 Copper
(mg/L)		 Consumer
Notice Date
7/1/2021  7/13/2021 5 3 years 0.0152 0.186
6/18/2018  7/7/2018 5 3 years 0.0048 0.334
8/11/2015  9/1/2015 5 3 years 0 0.009
9/12/2012  10/5/2012 5 3 years 0 0.011
9/9/2009  10/19/2009 5 3 years 0.0037 0.021
9/21/2006  11/20/2006 5 3 years 0.0030 0.031
7/8/2003  9/8/2003 5 3 years 0.0010 0
1/1/2000  -  12/13/20001/2/2001 5 3 years 0.0140 0.220
1/1/1996  -  6/3/19977/7/1997 5 1 year 0.0039 0
1/1/1996  -  6/6/19967/22/1996 5 1 year 0.0056 0.015
1/1/1995  -  6/14/19957/3/1995 5 1 year 0.0030 0.180
1/1/1994  -  12/14/19941/9/1995 10 6 months 0 0.070
1/1/1994  -  6/16/19949/12/1994 10 6 months 0.0060 0.070
7/1/1993  -  7/23/19931/31/1994 10 6 months 0.0690 0.130


More information for this water system: SDWIS ID 1081
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