OHA Drinking Water Services
OR41
PWS ID: 00703 ---- RICHLAND, CITY OF
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
11/19/2024  -  12/24/20241/24/2025 10 6 months 0.0017 0.765
8/20/2023  -  9/5/20239/21/2023 10 6 months 0 1.500
5/15/2018  6/5/2018 10 6 months 0.0048 1.350 6/13/2018
7/13/2016  8/1/2016 5 3 years 0.0032 1.990
7/9/2013  -  7/10/20138/7/2013 5 3 years 0.0018 0.810
7/7/2010  9/27/2010 5 3 years 0.0019 0.216
8/4/2009  10/19/2009 5 3 years 0.0050 3.425
8/22/2006  9/14/2006 5 3 years 0.0055 1.060
11/19/2003  12/8/2003 5 3 years 0.0060 0.640
1/1/1999  -  9/26/200010/16/2000 5 3 years 0.0040 0.480
1/1/1997  -  12/30/19971/29/1998 5 1 year 0.0061 0.170
1/1/1996  -  9/4/19969/23/1996 5 1 year 0.0122 0.380
1/1/1995  -  5/1/19955/30/1995 5 1 year 0.0102 0.430
1/1/1994  -  1/12/19942/4/1994 10 6 months 0.0082 0.580
7/1/1993  -  8/3/19938/26/1993 10 6 months 0.0140 0.580


More information for this water system: SDWIS ID 3786
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