OHA Drinking Water Services
OR41
PWS ID: 00957 ---- WINSTON-DILLARD WATER DISTRICT
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
6/5/2024  6/12/2024 20 3 years 0.0070 0.060
6/8/2021  6/17/2021 20 3 years 0.0020 0.052
6/21/2017  6/28/2017 20 1 year 0.0030 0.054
6/7/2016  6/17/2016 20 1 year 0.0050 0.066
6/24/2015  -  6/25/20157/20/2015 20 1 year 0.0110 0.072
6/10/2014  7/2/2014 20 1 year 0.0020 0.028
7/11/2013  -  7/12/20138/5/2013 40 6 months 0.0040 0.054
1/25/2013  2/8/2013 40 6 months 0.0070 0.084
8/4/2011  9/7/2011 20 3 years 0 0.082
9/9/2008  -  9/10/200810/3/2008 20 3 years 0 0.080
9/23/2005  11/7/2005 10 3 years 0.0020 0.028
9/25/2002  11/6/2002 10 3 years 0 0.035
1/1/1999  -  9/20/199910/4/1999 20 3 years 0 0
1/1/1996  -  10/10/199611/6/1996 20 1 year 0.0020 0.050
1/1/1995  -  9/26/199510/25/1995 20 1 year 0.0020 0.075
1/1/1994  -  5/17/19946/9/1994 20 1 year 0 0
1/1/1993  -  6/6/19937/6/1993 40 6 months 0.0040 0.450
7/1/1992  -  12/4/19921/4/1993 40 6 months 0.0027 0.148


More information for this water system: SDWIS ID 4306
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