OHA Drinking Water Services
OR41
PWS ID: 00615 ---- HERITAGE IMPROVEMENT DISTRICT
Lead & Copper

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90th Percentile Summary Results

Sample Dates Date
Received		 Sample
Count		 Frequency Lead
(mg/L)		 Copper
(mg/L)		 Consumer
Notice Date
7/16/2025  8/6/2025 5 3 years 0 0.011
7/7/2022  7/21/2022 5 3 years 0 0
6/9/2019  -  6/10/2019 5 3 years 0 0
6/9/2019  -  6/10/20196/21/2019 5 3 years 0 0
9/21/2015  -  9/22/2015 5 3 years 0 0
9/21/2015  -  9/22/201510/8/2015 5 3 years 0 0
7/23/2012  5 3 years 0 0
7/23/2012  8/7/2012 5 3 years 0 0
6/18/2009  1/8/2010 5 3 years 0.0007 0.002
12/12/2005  6/12/2006 5 3 years 0 0
1/1/1999  -  8/25/199912/17/1999 5 1 year 0.0011 0.024
1/1/1995  -  12/20/19951/29/1996 5 1 year 0.0085 0
1/1/1994  -  6/8/19946/23/1994 10 6 months 0 0
7/1/1993  -  12/1/19931/10/1994 10 6 months 0 0


More information for this water system: SDWIS ID 3772
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