OHA Drinking Water Services
OR41
PWS ID: 01109 ---- WATER WONDERLAND IMPROV DIST 1
Lead & Copper

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Summary Results
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
9/23/2025  -  9/25/202510/2/2025 5 3 years 0 0.045
7/21/2022  -  7/23/20228/10/2022 5 3 years 0 0.047
7/9/2019  7/18/2019 5 3 years 0.0010 0.050
6/29/2016  -  7/5/20167/29/2016 5 3 years 0 0.030
8/9/2013  -  8/14/20139/6/2013 5 3 years 0 0.043
8/25/2010  -  8/30/201010/4/2010 5 3 years 0 0.036
8/30/2007  -  9/6/20079/25/2007 5 3 years 0 0.040
9/24/2004  10/19/2004 5 3 years 0.0004 0.050
1/1/2001  -  9/19/200110/9/2001 5 3 years 0.0012 0.060
1/1/1996  -  9/11/19989/21/1998 5 3 years 0.0004 0.130
1/1/1997  -  10/1/19974/9/1999 5 1 year 0.0119 0.160
1/1/1996  -  9/20/19964/9/1999 5 1 year 0 0.090
1/1/1995  -  9/15/199510/12/1995 5 1 year 0.0008 0.123
1/1/1994  -  6/30/19949/16/1994 10 6 months 0 0.213
7/1/1993  -  12/29/19939/16/1994 10 6 months 0 0.349


More information for this water system: SDWIS ID 3818
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