OHA Drinking Water Services
OR41
PWS ID: 00414 ---- JOSEPH, 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
4Q2024 Dec 03, 2024 2DBP-01 WALLOWA LAKE / END OF LINE 0.008 0.011 0.004 0.004
3Q2024 Sep 24, 2024 2DBP-01 WALLOWA LAKE / END OF LINE 0.010 0.008 0.007 0.004
2Q2024 Jun 19, 2024 2DBP-01 WALLOWA LAKE / END OF LINE 0.010 0.010 0.008 0.009
1Q2024 Mar 06, 2024 2DBP-01 WALLOWA LAKE / END OF LINE 0.009 0.009 0.007 0.007
4Q2023 Dec 12, 2023 2DBP-01 WALLOWA LAKE / END OF LINE 0.012 0.015 0.010 0.012
3Q2023 Sep 12, 2023 2DBP-01 WALLOWA LAKE / END OF LINE 0.008 0.010 0.005 0.007
2Q2023 2DBP-01 WALLOWA LAKE / END OF LINE 0.007 0.003
1Q2023 Mar 22, 2023 2DBP-01 WALLOWA LAKE / END OF LINE 0.007 0.007 0.002 0.004
4Q2022 Dec 19, 2022 2DBP-01 WALLOWA LAKE / END OF LINE 0.006 0.006 0.001 0.001
3Q2022 Sep 14, 2022 2DBP-01 WALLOWA LAKE / END OF LINE 0.006 0.006 0.001 0.002
2Q2022 Jun 14, 2022 2DBP-01 WALLOWA LAKE / END OF LINE 0.007 0.005 0.001 0
1Q2022 Mar 02, 2022 2DBP-01 WALLOWA LAKE / END OF LINE 0.008 0.007 0.003 0.001
4Q2021 Dec 16, 2021 2DBP-01 WALLOWA LAKE / END OF LINE 0.007 0.009 0.003 0.004
3Q2021 Sep 13, 2021 2DBP-01 WALLOWA LAKE / END OF LINE 0.007 0.007 0.005 0.004
2Q2021 Jun 07, 2021 2DBP-01 WALLOWA LAKE / END OF LINE 0.007 0.006 0.006 0.006
1Q2021 Mar 09, 2021 2DBP-01 WALLOWA LAKE / END OF LINE 0.009 0.007 0.007 0.006
4Q2020 Dec 08, 2020 2DBP-01 WALLOWA LAKE / END OF LINE 0.010 0.011 0.008 0.009
3Q2020 Sep 01, 2020 2DBP-01 WALLOWA LAKE / END OF LINE 0.011 0.011 0.008 0.008
2Q2020 Jun 17, 2020 2DBP-01 WALLOWA LAKE / END OF LINE 0.012 0.012 0.007 0.008
1Q2020 Mar 10, 2020 2DBP-01 WALLOWA LAKE / END OF LINE 0.012 0.009 0.007 0.005
4Q2019 Dec 09, 2019 2DBP-01 WALLOWA LAKE / END OF LINE 0.012 0.013 0.007 0.008
3Q2019 Sep 09, 2019 2DBP-01 WALLOWA LAKE / END OF LINE 0.012 0.013 0.006 0.006
2Q2019 Jun 10, 2019 2DBP-01 WALLOWA LAKE / END OF LINE 0.010 0.013 0.005 0.006
1Q2019 Mar 21, 2019 2DBP-01 WALLOWA LAKE / END OF LINE 0.009 0.008 0.004 0.003
4Q2018 Dec 04, 2018 2DBP-01 WALLOWA LAKE / END OF LINE 0.009 0.009 0.005 0.005
3Q2018 Sep 10, 2018 2DBP-01 WALLOWA LAKE / END OF LINE 0.009 0.009 0.005 0.004
2Q2018 Jun 11, 2018 2DBP-01 WALLOWA LAKE / END OF LINE 0.012 0.009 0.008 0.006
1Q2018 Mar 06, 2018 2DBP-01 WALLOWA LAKE / END OF LINE 0.013 0.012 0.009 0.008
4Q2017 Dec 13, 2017 2DBP-01 WALLOWA LAKE / END OF LINE 0.012 0.012 0.008 0.009
3Q2017 Sep 11, 2017 2DBP-01 WALLOWA LAKE / END OF LINE 0.012 0.015 0.007 0.009
2Q2017 Jun 30, 2017 2DBP-01 WALLOWA LAKE / END OF LINE 0.009 0.010 0.004 0.007
1Q2017 Mar 27, 2017 2DBP-01 WALLOWA LAKE / END OF LINE 0.008 0.008 0.002 0.002
4Q2016 Dec 07, 2016 2DBP-01 WALLOWA LAKE / END OF LINE 0.008 0.009 0.001 0.002
3Q2016 Sep 07, 2016 2DBP-01 WALLOWA LAKE / END OF LINE 0.008 0.008 0.002 0.002
2Q2016 Jun 06, 2016 2DBP-01 WALLOWA LAKE / END OF LINE 0.008 0.008 0.002 0.004
1Q2016 Mar 21, 2016 2DBP-01 WALLOWA LAKE / END OF LINE 0.008 0.007 0.003 0.001
4Q2015 Dec 03, 2015 2DBP-01 WALLOWA LAKE / END OF LINE 0.009 0.008 0.005 0.004
3Q2015 Sep 30, 2015 2DBP-01 WALLOWA LAKE / END OF LINE 0.009 0.009 0.006 0.006
2Q2015 Jun 01, 2015 2DBP-01 WALLOWA LAKE / END OF LINE 0.007 0.010 0.007 0.008
1Q2015 Mar 24, 2015 2DBP-01 WALLOWA LAKE / END OF LINE 0.007 0.007 0.007 0.007
4Q2014 Dec 01, 2014 2DBP-01 WALLOWA LAKE / END OF LINE 0.007 0.007 0.007 0.007
3Q2014 Sep 09, 2014 2DBP-01 WALLOWA LAKE / END OF LINE 0.007 0.006 0.007 0.007
2Q2014 Jun 02, 2014 2DBP-01 WALLOWA LAKE / END OF LINE 0.007 0.010 0.006 0.009
1Q2014 Mar 27, 2014 2DBP-01 WALLOWA LAKE / END OF LINE 0.005 0.004
4Q2013 Nov 18, 2013 2DBP-01 WALLOWA LAKE / END OF LINE 0.003 0.002



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