OHA Drinking Water Services
OR41
PWS ID: 00954 ---- WILSONVILLE, CITY OF
LRAAs and OELs

LRAA = Locational running annual average; OEL = Operational evaluation level. Learn about OELs here.
Averages are subject to change as new data is taken into consideration.

TTHM MCL = 0.080 mg/L,  HAA5 MCL = 0.060 mg/L.  MCL exceedances are indicated with red text.

Monitoring
Period
Last
Sample
Sample
Point
Location TTHM
LRAA
TTHM
OEL
HAA5
LRAA
HAA5
OEL
1Q2024 Feb 08, 2024 2DBP-01 10295 SW RIDDER RD 0.013 0.012 0.004 0.004
4Q2023 Nov 08, 2023 2DBP-01 10295 SW RIDDER RD 0.013 0.015 0.004 0.004
3Q2023 Aug 09, 2023 2DBP-01 10295 SW RIDDER RD 0.012 0.011 0.005 0.004
2Q2023 May 10, 2023 2DBP-01 10295 SW RIDDER RD 0.011 0.012 0.005 0.005
1Q2023 Feb 10, 2023 2DBP-01 10295 SW RIDDER RD 0.011 0.012 0.005 0.005
4Q2022 Nov 10, 2022 2DBP-01 10295 SW RIDDER RD 0.011 0.013 0.005 0.006
3Q2022 Aug 10, 2022 2DBP-01 10295 SW RIDDER RD 0.011 0.009 0.005 0.004
2Q2022 May 12, 2022 2DBP-01 10295 SW RIDDER RD 0.011 0.011 0.005 0.005
1Q2022 Feb 09, 2022 2DBP-01 10295 SW RIDDER RD 0.011 0.011 0.004 0.005
4Q2021 Nov 03, 2021 2DBP-01 10295 SW RIDDER RD 0.011 0.013 0.004 0.005
3Q2021 Aug 11, 2021 2DBP-01 10295 SW RIDDER RD 0.011 0.009 0.003 0.003
2Q2021 May 11, 2021 2DBP-01 10295 SW RIDDER RD 0.015 0.011 0.004 0.003
1Q2021 Feb 10, 2021 2DBP-01 10295 SW RIDDER RD 0.016 0.015 0.004 0.003
4Q2020 Nov 04, 2020 2DBP-01 10295 SW RIDDER RD 0.017 0.018 0.005 0.005
3Q2020 Aug 19, 2020 2DBP-01 10295 SW RIDDER RD 0.015 0.018 0.005 0.005
2Q2020 May 12, 2020 2DBP-01 10295 SW RIDDER RD 0.013 0.012 0.005 0.005
1Q2020 Feb 12, 2020 2DBP-01 10295 SW RIDDER RD 0.014 0.015 0.005 0.005
4Q2019 Nov 07, 2019 2DBP-01 10295 SW RIDDER RD 0.013 0.012 0.005 0.005
3Q2019 Aug 14, 2019 2DBP-01 10295 SW RIDDER RD 0.013 0.015 0.006 0.006
2Q2019 May 15, 2019 2DBP-01 10295 SW RIDDER RD 0.012 0.012 0.005 0.006
1Q2019 Feb 12, 2019 2DBP-01 10295 SW RIDDER RD 0.011 0.012 0.005 0.005
4Q2018 Nov 13, 2018 2DBP-01 10295 SW RIDDER RD 0.009 0.010 0.004 0.005
3Q2018 Aug 15, 2018 2DBP-01 10295 SW RIDDER RD 0.009 0.010 0.004 0.004
2Q2018 May 15, 2018 2DBP-01 10295 SW RIDDER RD 0.008 0.007 0.004 0.004
1Q2018 Feb 20, 2018 2DBP-01 10295 SW RIDDER RD 0.010 0.007 0.006 0.004
4Q2017 Nov 07, 2017 2DBP-01 10295 SW RIDDER RD 0.012 0.011 0.006 0.005
3Q2017 Aug 08, 2017 2DBP-01 10295 SW RIDDER RD 0.014 0.012 0.007 0.007
2Q2017 May 03, 2017 2DBP-01 10295 SW RIDDER RD 0.015 0.015 0.007 0.008
1Q2017 Feb 07, 2017 2DBP-01 10295 SW RIDDER RD 0.015 0.015 0.006 0.007
4Q2016 Nov 03, 2016 2DBP-01 10295 SW RIDDER RD 0.015 0.016 0.005 0.005
3Q2016 Aug 10, 2016 2DBP-01 10295 SW RIDDER RD 0.016 0.015 0.005 0.005
2Q2016 May 03, 2016 2DBP-01 10295 SW RIDDER RD 0.015 0.015 0.004 0.005
1Q2016 Feb 03, 2016 2DBP-01 10295 SW RIDDER RD 0.014 0.015 0.004 0.005
4Q2015 Nov 03, 2015 2DBP-01 10295 SW RIDDER RD 0.013 0.016 0.003 0.003
3Q2015 Aug 04, 2015 2DBP-01 10295 SW RIDDER RD 0.012 0.011 0.003 0.002
2Q2015 May 06, 2015 2DBP-01 10295 SW RIDDER RD 0.013 0.011 0.004 0.003
1Q2015 Feb 03, 2015 2DBP-01 10295 SW RIDDER RD 0.013 0.013 0.005 0.005
4Q2014 Nov 05, 2014 2DBP-01 10295 SW RIDDER RD 0.013 0.014 0.005 0.006
3Q2014 Aug 11, 2014 2DBP-01 10295 SW RIDDER RD 0.012 0.014 0.004 0.006
2Q2014 May 07, 2014 2DBP-01 10295 SW RIDDER RD 0.007 0.009 0.002 0.003
1Q2014 Feb 04, 2014 2DBP-01 10295 SW RIDDER RD 0.005 0.002
4Q2013 Nov 06, 2013 2DBP-01 10295 SW RIDDER RD 0.003 0
1Q2024 Feb 08, 2024 2DBP-02 28187 SW MORGAN ST 0.012 0.014 0.004 0.005
4Q2023 Nov 08, 2023 2DBP-02 28187 SW MORGAN ST 0.011 0.013 0.004 0.004
3Q2023 Aug 10, 2023 2DBP-02 28187 SW MORGAN ST 0.012 0.009 0.004 0.004
2Q2023 May 10, 2023 2DBP-02 28187 SW MORGAN ST 0.011 0.011 0.004 0.004
1Q2023 Feb 10, 2023 2DBP-02 28187 SW MORGAN ST 0.012 0.012 0.004 0.004
4Q2022 Nov 10, 2022 2DBP-02 28187 SW MORGAN ST 0.011 0.014 0.004 0.004
3Q2022 Aug 10, 2022 2DBP-02 28187 SW MORGAN ST 0.009 0.008 0.004 0.004
2Q2022 May 12, 2022 2DBP-02 28187 SW MORGAN ST 0.009 0.009 0.004 0.005
1Q2022 Feb 09, 2022 2DBP-02 28187 SW MORGAN ST 0.009 0.008 0.004 0.004
4Q2021 Nov 03, 2021 2DBP-02 28187 SW MORGAN ST 0.009 0.011 0.003 0.005
3Q2021 Aug 11, 2021 2DBP-02 28187 SW MORGAN ST 0.012 0.007 0.002 0.002
2Q2021 May 11, 2021 2DBP-02 28187 SW MORGAN ST 0.017 0.011 0.003 0.002
1Q2021 Feb 10, 2021 2DBP-02 28187 SW MORGAN ST 0.018 0.016 0.003 0.003
4Q2020 Nov 04, 2020 2DBP-02 28187 SW MORGAN ST 0.019 0.023 0.004 0.004
3Q2020 Aug 19, 2020 2DBP-02 28187 SW MORGAN ST 0.018 0.019 0.004 0.004
2Q2020 May 12, 2020 2DBP-02 28187 SW MORGAN ST 0.018 0.014 0.004 0.004
1Q2020 Feb 12, 2020 2DBP-02 28187 SW MORGAN ST 0.018 0.016 0.005 0.004
4Q2019 Nov 07, 2019 2DBP-02 28187 SW MORGAN ST 0.021 0.021 0.006 0.005
3Q2019 Aug 14, 2019 2DBP-02 28187 SW MORGAN ST 0.019 0.022 0.006 0.006
2Q2019 May 15, 2019 2DBP-02 28187 SW MORGAN ST 0.019 0.015 0.006 0.006
1Q2019 Feb 12, 2019 2DBP-02 28187 SW MORGAN ST 0.017 0.021 0.006 0.008
4Q2018 Nov 13, 2018 2DBP-02 28187 SW MORGAN ST 0.013 0.015 0.004 0.005
3Q2018 Aug 15, 2018 2DBP-02 28187 SW MORGAN ST 0.013 0.017 0.004 0.004
2Q2018 May 15, 2018 2DBP-02 28187 SW MORGAN ST 0.011 0.008 0.004 0.004
1Q2018 Feb 20, 2018 2DBP-02 28187 SW MORGAN ST 0.013 0.010 0.006 0.004
4Q2017 Nov 07, 2017 2DBP-02 28187 SW MORGAN ST 0.015 0.015 0.007 0.006
3Q2017 Aug 08, 2017 2DBP-02 28187 SW MORGAN ST 0.017 0.018 0.007 0.007
2Q2017 May 03, 2017 2DBP-02 28187 SW MORGAN ST 0.018 0.015 0.007 0.009
1Q2017 Feb 07, 2017 2DBP-02 28187 SW MORGAN ST 0.019 0.018 0.005 0.006
4Q2016 Nov 03, 2016 2DBP-02 28187 SW MORGAN ST 0.020 0.020 0.005 0.005
3Q2016 Aug 10, 2016 2DBP-02 28187 SW MORGAN ST 0.021 0.023 0.005 0.004
2Q2016 May 03, 2016 2DBP-02 28187 SW MORGAN ST 0.020 0.018 0.004 0.004
1Q2016 Feb 03, 2016 2DBP-02 28187 SW MORGAN ST 0.018 0.020 0.004 0.005
4Q2015 Nov 03, 2015 2DBP-02 28187 SW MORGAN ST 0.016 0.019 0.002 0.004
3Q2015 Aug 04, 2015 2DBP-02 28187 SW MORGAN ST 0.013 0.017 0.002 0.002
2Q2015 May 06, 2015 2DBP-02 28187 SW MORGAN ST 0.012 0.010 0.003 0.002
1Q2015 Feb 03, 2015 2DBP-02 28187 SW MORGAN ST 0.012 0.012 0.004 0.004
4Q2014 Nov 05, 2014 2DBP-02 28187 SW MORGAN ST 0.012 0.012 0.005 0.005
3Q2014 Aug 11, 2014 2DBP-02 28187 SW MORGAN ST 0.011 0.014 0.004 0.006
2Q2014 May 07, 2014 2DBP-02 28187 SW MORGAN ST 0.007 0.009 0.002 0.003
1Q2014 Feb 04, 2014 2DBP-02 28187 SW MORGAN ST 0.004 0.001
4Q2013 Nov 06, 2013 2DBP-02 28187 SW MORGAN ST 0.002 0
1Q2024 Feb 08, 2024 2DBP-03 31090 SW WALLOWA CT 0.011 0.010 0.005 0.004
4Q2023 Nov 08, 2023 2DBP-03 31090 SW WALLOWA CT 0.013 0.013 0.005 0.005
3Q2023 Aug 09, 2023 2DBP-03 31090 SW WALLOWA CT 0.011 0.011 0.006 0.005
2Q2023 May 10, 2023 2DBP-03 31090 SW WALLOWA CT 0.010 0.011 0.005 0.005
1Q2023 Feb 10, 2023 2DBP-03 31090 SW WALLOWA CT 0.009 0.011 0.005 0.006
4Q2022 Nov 10, 2022 2DBP-03 31090 SW WALLOWA CT 0.008 0.009 0.005 0.005
3Q2022 Aug 10, 2022 2DBP-03 31090 SW WALLOWA CT 0.009 0.007 0.005 0.004
2Q2022 May 12, 2022 2DBP-03 31090 SW WALLOWA CT 0.009 0.008 0.004 0.005
1Q2022 Feb 09, 2022 2DBP-03 31090 SW WALLOWA CT 0.009 0.009 0.004 0.004
4Q2021 Nov 03, 2021 2DBP-03 31090 SW WALLOWA CT 0.009 0.011 0.004 0.005
3Q2021 Aug 11, 2021 2DBP-03 31090 SW WALLOWA CT 0.009 0.008 0.003 0.003
2Q2021 May 11, 2021 2DBP-03 31090 SW WALLOWA CT 0.012 0.010 0.003 0.003
1Q2021 Feb 10, 2021 2DBP-03 31090 SW WALLOWA CT 0.014 0.012 0.004 0.003
4Q2020 Nov 04, 2020 2DBP-03 31090 SW WALLOWA CT 0.014 0.016 0.004 0.004
3Q2020 Aug 19, 2020 2DBP-03 31090 SW WALLOWA CT 0.014 0.016 0.005 0.005
2Q2020 May 12, 2020 2DBP-03 31090 SW WALLOWA CT 0.013 0.013 0.004 0.004
1Q2020 Feb 12, 2020 2DBP-03 31090 SW WALLOWA CT 0.014 0.011 0.005 0.005
4Q2019 Nov 07, 2019 2DBP-03 31090 SW WALLOWA CT 0.015 0.015 0.006 0.006
3Q2019 Aug 14, 2019 2DBP-03 31090 SW WALLOWA CT 0.014 0.016 0.006 0.006
2Q2019 May 15, 2019 2DBP-03 31090 SW WALLOWA CT 0.013 0.014 0.006 0.006
1Q2019 Feb 12, 2019 2DBP-03 31090 SW WALLOWA CT 0.011 0.011 0.005 0.005
4Q2018 Nov 13, 2018 2DBP-03 31090 SW WALLOWA CT 0.010 0.011 0.005 0.005
3Q2018 Aug 15, 2018 2DBP-03 31090 SW WALLOWA CT 0.011 0.011 0.004 0.004
2Q2018 May 15, 2018 2DBP-03 31090 SW WALLOWA CT 0.010 0.010 0.004 0.004
1Q2018 Feb 20, 2018 2DBP-03 31090 SW WALLOWA CT 0.010 0.009 0.005 0.004
4Q2017 Nov 07, 2017 2DBP-03 31090 SW WALLOWA CT 0.010 0.011 0.005 0.005
3Q2017 Aug 08, 2017 2DBP-03 31090 SW WALLOWA CT 0.011 0.010 0.006 0.005
2Q2017 May 03, 2017 2DBP-03 31090 SW WALLOWA CT 0.013 0.012 0.006 0.006
1Q2017 Feb 07, 2017 2DBP-03 31090 SW WALLOWA CT 0.013 0.013 0.005 0.006
4Q2016 Nov 03, 2016 2DBP-03 31090 SW WALLOWA CT 0.014 0.014 0.005 0.005
3Q2016 Aug 10, 2016 2DBP-03 31090 SW WALLOWA CT 0.014 0.014 0.005 0.005
2Q2016 May 03, 2016 2DBP-03 31090 SW WALLOWA CT 0.013 0.012 0.005 0.005
1Q2016 Feb 03, 2016 2DBP-03 31090 SW WALLOWA CT 0.014 0.014 0.005 0.005
4Q2015 Nov 03, 2015 2DBP-03 31090 SW WALLOWA CT 0.013 0.014 0.004 0.004
3Q2015 Aug 04, 2015 2DBP-03 31090 SW WALLOWA CT 0.013 0.013 0.004 0.003
2Q2015 May 06, 2015 2DBP-03 31090 SW WALLOWA CT 0.013 0.012 0.005 0.004
1Q2015 Feb 03, 2015 2DBP-03 31090 SW WALLOWA CT 0.012 0.013 0.005 0.005
4Q2014 Nov 05, 2014 2DBP-03 31090 SW WALLOWA CT 0.011 0.013 0.005 0.005
3Q2014 Aug 11, 2014 2DBP-03 31090 SW WALLOWA CT 0.012 0.011 0.004 0.005
2Q2014 May 07, 2014 2DBP-03 31090 SW WALLOWA CT 0.008 0.010 0.003 0.003
1Q2014 Feb 04, 2014 2DBP-03 31090 SW WALLOWA CT 0.006 0.002
4Q2013 Nov 06, 2013 2DBP-03 31090 SW WALLOWA CT 0.005 0.001
1Q2024 Feb 08, 2024 2DBP-04 29444 SW GLACIER WAY 0.010 0.010 0.004 0.004
4Q2023 Nov 08, 2023 2DBP-04 29444 SW GLACIER WAY 0.011 0.012 0.004 0.005
3Q2023 Aug 09, 2023 2DBP-04 29444 SW GLACIER WAY 0.009 0.009 0.005 0.004
2Q2023 May 10, 2023 2DBP-04 29444 SW GLACIER WAY 0.009 0.009 0.005 0.004
1Q2023 Feb 10, 2023 2DBP-04 29444 SW GLACIER WAY 0.009 0.010 0.005 0.005
4Q2022 Nov 10, 2022 2DBP-04 29444 SW GLACIER WAY 0.008 0.009 0.005 0.005
3Q2022 Aug 10, 2022 2DBP-04 29444 SW GLACIER WAY 0.009 0.008 0.005 0.004
2Q2022 May 12, 2022 2DBP-04 29444 SW GLACIER WAY 0.008 0.008 0.004 0.005
1Q2022 Feb 09, 2022 2DBP-04 29444 SW GLACIER WAY 0.008 0.008 0.003 0.004
4Q2021 Nov 03, 2021 2DBP-04 29444 SW GLACIER WAY 0.007 0.009 0.003 0.004
3Q2021 Aug 11, 2021 2DBP-04 29444 SW GLACIER WAY 0.007 0.006 0.002 0.002
2Q2021 May 11, 2021 2DBP-04 29444 SW GLACIER WAY 0.011 0.008 0.003 0.002
1Q2021 Feb 10, 2021 2DBP-04 29444 SW GLACIER WAY 0.012 0.010 0.003 0.003
4Q2020 Nov 04, 2020 2DBP-04 29444 SW GLACIER WAY 0.013 0.014 0.005 0.004
3Q2020 Aug 19, 2020 2DBP-04 29444 SW GLACIER WAY 0.012 0.014 0.005 0.005
2Q2020 May 12, 2020 2DBP-04 29444 SW GLACIER WAY 0.012 0.011 0.005 0.005
1Q2020 Feb 12, 2020 2DBP-04 29444 SW GLACIER WAY 0.014 0.011 0.005 0.004
4Q2019 Nov 07, 2019 2DBP-04 29444 SW GLACIER WAY 0.014 0.014 0.005 0.005
3Q2019 Aug 14, 2019 2DBP-04 29444 SW GLACIER WAY 0.013 0.015 0.006 0.005
2Q2019 May 15, 2019 2DBP-04 29444 SW GLACIER WAY 0.012 0.014 0.005 0.006
1Q2019 Feb 12, 2019 2DBP-04 29444 SW GLACIER WAY 0.010 0.010 0.005 0.005
4Q2018 Nov 13, 2018 2DBP-04 29444 SW GLACIER WAY 0.009 0.010 0.004 0.004
3Q2018 Aug 15, 2018 2DBP-04 29444 SW GLACIER WAY 0.009 0.010 0.004 0.004
2Q2018 May 15, 2018 2DBP-04 29444 SW GLACIER WAY 0.008 0.008 0.004 0.004
1Q2018 Feb 20, 2018 2DBP-04 29444 SW GLACIER WAY 0.009 0.007 0.004 0.004
4Q2017 Nov 07, 2017 2DBP-04 29444 SW GLACIER WAY 0.009 0.010 0.005 0.005
3Q2017 Aug 08, 2017 2DBP-04 29444 SW GLACIER WAY 0.010 0.009 0.005 0.005
2Q2017 May 03, 2017 2DBP-04 29444 SW GLACIER WAY 0.012 0.010 0.006 0.006
1Q2017 Feb 07, 2017 2DBP-04 29444 SW GLACIER WAY 0.012 0.011 0.005 0.006
4Q2016 Nov 03, 2016 2DBP-04 29444 SW GLACIER WAY 0.013 0.013 0.005 0.006
3Q2016 Aug 10, 2016 2DBP-04 29444 SW GLACIER WAY 0.014 0.014 0.005 0.005
2Q2016 May 03, 2016 2DBP-04 29444 SW GLACIER WAY 0.013 0.012 0.009 0.005
1Q2016 Feb 03, 2016 2DBP-04 29444 SW GLACIER WAY 0.013 0.013 0.009 0.010
4Q2015 Nov 03, 2015 2DBP-04 29444 SW GLACIER WAY 0.012 0.014 0.008 0.009
3Q2015 Aug 04, 2015 2DBP-04 29444 SW GLACIER WAY 0.012 0.011 0.009 0.012
2Q2015 May 06, 2015 2DBP-04 29444 SW GLACIER WAY 0.013 0.012 0.005 0.004
1Q2015 Feb 03, 2015 2DBP-04 29444 SW GLACIER WAY 0.013 0.013 0.005 0.005
4Q2014 Nov 05, 2014 2DBP-04 29444 SW GLACIER WAY 0.012 0.014 0.005 0.006
3Q2014 Aug 11, 2014 2DBP-04 29444 SW GLACIER WAY 0.010 0.013 0.003 0.005
2Q2014 May 07, 2014 2DBP-04 29444 SW GLACIER WAY 0.005 0.007 0.002 0.002
1Q2014 Feb 04, 2014 2DBP-04 29444 SW GLACIER WAY 0.003 0.001
4Q2013 Nov 06, 2013 2DBP-04 29444 SW GLACIER WAY 0.002 0




More information for this water system: SDWIS ID 4377
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