OHA Drinking Water Services
OR41
PWS ID: 91830 ---- LONDON ELEMENTARY SD 45J3
Lead & Copper

More Information
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
9/9/2025  9/18/2025 10 6 months 0 0.104
4/8/2025  4/11/2025 10 6 months 0 0.106
9/5/2024  9/10/2024 10 6 months 0.0021 1.210
5/1/2024  5/10/2024 10 6 months 0 0.806
10/10/2023  10/12/2023 10 6 months 0 1.440
3/24/2023  4/5/2023 10 6 months 0 0
10/15/2020  10/20/2020 5 3 years 0.0037 2.540
9/9/2017  9/15/2017 5 3 years 0 0.864
6/11/2014  6/27/2014 5 3 years 0.0040 1.100
8/26/2011  9/2/2011 5 6 months 0 0.880
6/23/2011  7/5/2011 5 3 years 0.0035 1.700
6/16/2008  7/14/2008 5 1 year 0 1.210
6/20/2007  7/2/2007 5 1 year 0.0030 0.920
2/10/2006  2/21/2006 5 1 year 0 0.086
3/9/2005  -  3/22/20053/28/2005 10 6 months 0.0105 1.250
9/29/2004  10/18/2004 5 6 months 0.0025 0.820
5/25/2004  6/7/2004 10 6 months 0 1.400
9/18/2003  10/6/2003 5 3 years 0.0230 0.760
1/1/1999  -  9/20/20009/28/2000 5 3 years 0.0290 1.030
1/1/1997  -  8/28/199711/6/1997 5 1 year 0.0120 0.550
1/1/1996  -  10/8/199611/1/1996 5 1 year 0.0100 0.970
1/1/1995  -  8/30/199510/11/1995 5 1 year 0 0.441
1/1/1994  -  3/5/19943/28/1994 10 6 months 0.0105 0.540
7/1/1993  -  8/24/199310/8/1993 10 6 months 0.0060 0.920


More information for this water system: SDWIS ID 1041
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