OHA Drinking Water Services
OR41
PWS ID: 00218 ---- CORNELIUS, 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
8/23/2023  -  9/8/20239/22/2023 32 3 years 0 0.083 10/9/2023
7/20/2020  -  7/31/20208/18/2020 32 3 years 0 0.088
7/10/2017  -  7/19/20178/16/2017 32 3 years 0 0.124
7/15/2014  -  7/28/20148/4/2014 31 3 years 0 0.090
7/25/2011  -  8/2/20118/29/2011 32 3 years 0 0.082
8/5/2008  -  8/27/200810/14/2008 20 3 years 0 0.060
8/26/2005  -  9/1/20059/22/2005 20 3 years 0.0020 0.170
1/1/1999  -  8/25/199910/6/1999 20 3 years 0.0030 0.130
1/1/1996  -  8/28/199610/7/1996 20 1 year 0.0010 0.230
1/1/1995  -  8/30/199510/16/1995 20 1 year 0.0020 0.220
1/1/1994  -  9/28/199410/21/1994 20 1 year 0.0070 0.410
7/1/1993  -  10/19/199311/19/1993 40 6 months 0.0120 0.640
1/1/1993  -  5/2/19936/2/1993 40 6 months 0.0100 0.260


More information for this water system: SDWIS ID 4033
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