OHA Drinking Water Services
OR41
PWS ID: 00237 ---- HILLTOP IMPROVEMENT DISTRICT
Lead & Copper

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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
9/15/2020  9/29/2020 5 3 years 0 0
7/12/2017  7/24/2017 5 3 years 0 0
9/11/2014  9/22/2014 5 3 years 0 0
9/14/2011  9/23/2011 5 3 years 0 0.015
8/30/2008  -  9/3/200810/3/2008 5 3 years 0 0
4/19/2005  5/2/2005 5 3 years 0 0.235
1/1/2001  -  1/9/20011/29/2001 5 1 year 0 0.016
1/1/1999  -  2/19/19993/15/1999 5 1 year 0 0.480
1/1/1997  -  12/16/19971/14/1998 5 1 year 0 0.220
1/1/1995  -  9/26/199510/26/1995 5 1 year 0.0013 0.075
1/1/1994  -  3/11/19945/8/1995 5 6 months 0.0026 0.140
7/1/1993  -  9/13/199311/10/1993 5 6 months 0.0029 0.095


More information for this water system: SDWIS ID 3280
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