OHA Drinking Water Services
OR41
PWS ID: 93759 ---- PRATUM ELEMENTARY
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
9/21/2021  10/6/2021 5 3 years 0 0
9/7/2018  9/21/2018 5 3 years 0.0028 0
9/22/2015  10/9/2015 5 3 years 0.0011 0
9/19/2012  10/16/2012 5 3 years 0.0022 0
9/29/2009  10/9/2009 5 3 years 0 0
12/19/2006  1/11/2007 5 3 years 0.0010 0
1/1/1997  -  7/10/19978/28/1997 5 1 year 0 0.036
1/1/1996  -  6/6/19967/10/1996 5 1 year 0 0.002
1/1/1995  -  9/25/199510/16/1995 5 1 year 0.0012 0
1/1/1995  -  3/7/19954/3/1995 5 6 months 0.0058 0.002
1/1/1994  -  3/2/19943/30/1994 5 6 months 0.0085 0


More information for this water system: SDWIS ID 1439
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