OHA Drinking Water Services
OR41
PWS ID: 00812 ---- DELPHIAN SCHOOL
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
9/12/2025  9/22/2025 5 3 years 0.0011 0.200
9/13/2022  -  9/14/20229/27/2022 6 3 years 0.0022 0.109
8/1/2019  -  8/2/20198/15/2019 5 3 years 0 0.112
7/23/2016  -  7/24/20168/11/2016 5 3 years 0.0042 0.121 8/26/2016
9/18/2013  -  9/19/201310/2/2013 5 3 years 0.0020 0.070
8/19/2010  9/23/2010 5 3 years 0.0020 0.265
11/11/2004  11/24/2004 5 3 years 0.0035 0.250
1/1/1999  -  12/27/20011/18/2002 5 3 years 0.0020 0.530
1/1/1998  -  12/30/19987/5/2000 5 1 year 0 0.380
1/1/1997  -  12/29/19972/17/1998 5 1 year 0 0.420
1/1/1996  -  9/30/19964/28/1997 5 1 year 0.0070 0.220
1/1/1995  -  1/5/19952/7/1995 10 6 months 0.0020 1.170
7/1/1994  -  12/4/199412/5/1994 10 6 months 0.0090 0.950


More information for this water system: SDWIS ID 4138
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