OHA Drinking Water Services
OR41
PWS ID: 00374 ---- NORTH HILL WATER CORPORATION
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
8/8/2023  8/30/2023 5 3 years 0 0
7/4/2020  -  7/6/20207/16/2020 5 3 years 0 0
7/12/2017  11/1/2017 5 3 years 0 0
8/26/2014  -  9/3/20149/18/2014 5 3 years 0 0.005
7/7/2011  8/1/2011 5 3 years 0.0005 0
7/28/2008  3/12/2010 5 3 years 0.0015 0.006
12/14/2005  1/30/2006 5 3 years 0.0020 0.012
12/2/2002  12/23/2002 5 1 year 0.0010 0.055
1/1/1999  -  9/8/199910/12/1999 5 1 year 0.0016 0.047
1/1/1998  -  2/26/19983/19/1998 5 1 year 0.0003 0.002
1/1/1994  -  5/18/19946/13/1994 5 6 months 0.0010 0.120
7/1/1993  -  11/22/199312/2/1993 5 6 months 0.0005 0


More information for this water system: SDWIS ID 3732
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