OHA Drinking Water Services
OR41
PWS ID: 00474 ---- LAWRENCE SUBDIVISION WTR ASSN
Lead & Copper

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Summary Results
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
9/8/2023  5 3 years 0 0.077
9/8/2023  9/15/2023 5 3 years 0 0.077
7/10/2020  -  7/13/2020 5 3 years 0 0.260
7/10/2020  -  7/13/20207/21/2020 5 3 years 0 0.260
8/8/2017  5 3 years 0 0.177
8/8/2017  8/22/2017 5 3 years 0.0014 0.177
8/18/2014  5 3 years 0 0.158
8/18/2014  9/4/2014 5 3 years 0.0086 0.158
9/5/2011  -  9/12/201110/5/2011 5 3 years 0 0.050
9/22/2008  10/3/2008 5 3 years 0 0.230
9/26/2005  10/10/2005 5 1 year 0 0.315
11/24/2003  2/13/2004 5 6 months 0 0.006
3/10/2003  -  3/11/20033/21/2003 5 6 months 0 0.675
7/8/2002  -  7/9/20027/29/2002 5 6 months 0.0012 0.910
1/1/2002  -  2/11/20022/20/2002 5 6 months 0.0042 1.240
7/1/2001  -  10/15/200112/14/2001 5 6 months 0.0046 2.080
1/1/2001  -  4/9/20015/2/2001 5 1 year 0.0042 1.740
1/1/1999  -  9/11/200010/17/2000 5 1 year 0.0032 1.750
1/1/1997  -  8/26/199711/13/1997 5 1 year 0 1.664
1/1/1996  -  9/9/199610/22/1996 5 1 year 0 0.831
1/1/1995  -  8/14/19959/6/1995 5 1 year 0 0.421
1/1/1994  -  2/14/19945/3/1994 5 6 months 0.0038 0.828
1/1/1993  -  4/27/19936/10/1993 5 6 months 0 0.286


More information for this water system: SDWIS ID 3350
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