OHA Drinking Water Services
OR41
PWS ID: 91508 ---- RUCH ELEMENTARY SD 549
Lead & Copper

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Detailed Results
Corrosion Control
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90th Percentile Summary Results

Sample Dates Date
Received		 Sample
Count		 Frequency Lead
(mg/L)		 Copper
(mg/L)		 Consumer
Notice Date
7/24/2023  8/8/2023 5 3 years 0.0047 0.356
6/22/2021  7/1/2021 5 3 years 0.0040 0.202
6/25/2018  -  7/17/20187/25/2018 10 3 years 0.0036 0.315
9/17/2015  9/24/2015 5 3 years 0.0040 0.178
7/30/2012  -  7/31/20128/7/2012 5 3 years 0.0035 0.175
9/23/2009  10/8/2009 5 3 years 0.0055 0.197
7/13/2006  7/27/2006 5 3 years 0.0053 0.167
4/1/2003  4/14/2003 5 3 years 0.0082 0.127
1/1/2000  -  4/13/20005/8/2000 5 3 years 0.0017 0.083
1/1/1996  -  11/7/199712/8/1997 5 3 years 0.0030 0.100
1/1/1996  -  6/4/19966/14/1996 5 1 year 0.0030 0.047
1/1/1995  -  7/10/19957/21/1995 5 1 year 0.0100 0.077
1/1/1994  -  12/21/19942/6/1995 5 1 year 0.0140 0.183
1/1/1994  -  6/8/199412/19/1994 10 6 months 0.0140 0.134
7/1/1993  -  9/28/199312/19/1994 10 6 months 0.0120 0.232


More information for this water system: SDWIS ID 897
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