OHA Drinking Water Services
OR41
PWS ID: 00892 ---- SOUTH PRAIRIE WATER ASSN
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
8/5/2025  8/22/2025 5 3 years 0 0.029
8/17/2022  -  8/18/20229/8/2022 5 3 years 0.0010 0
8/6/2019  8/19/2019 5 3 years 0 0
9/20/2016  10/7/2016 5 3 years 0.0139 0.139
9/26/2013  10/14/2013 5 3 years 0 0.033
9/16/2010  10/14/2010 5 3 years 0.0071 0
8/30/2007  10/19/2007 5 3 years 0 0.055
10/29/2002  12/23/2002 5 3 years 0 0.103
7/1/2001  -  10/15/20011/2/2002 10 6 months 0 0.113
7/1/2000  -  12/29/20001/29/2001 10 6 months 0 1.350
1/1/1997  -  11/20/19971/29/1998 10 6 months 0.0016 0.890
1/1/1997  -  4/4/19978/12/1997 10 6 months 0 0.830
7/1/1993  -  12/14/19931/7/1994 10 6 months 0.0110 2.500


More information for this water system: SDWIS ID 4079
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