OHA Drinking Water Services
OR41
PWS ID: 00705 ---- SOUTH UMPQUA WATER ASSOCIATION
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
3Q2024 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.041 0.043
2Q2024 May 31, 2024 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.044 0.041 0.034 0.040
1Q2024 Mar 25, 2024 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.044 0.042 0.034 0.034
4Q2023 Nov 15, 2023 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.044 0.047 0.030 0.036
3Q2023 Jul 12, 2023 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.042 0.046 0.029 0.022
2Q2023 May 19, 2023 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.043 0.038 0.034 0.034
1Q2023 Feb 14, 2023 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.043 0.042 0.033 0.031
4Q2022 Nov 28, 2022 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.043 0.043 0.038 0.038
3Q2022 Sep 22, 2022 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.046 0.048 0.039 0.036
2Q2022 Jun 23, 2022 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.045 0.042 0.038 0.039
1Q2022 Feb 10, 2022 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.047 0.045 0.035 0.039
4Q2021 Oct 26, 2021 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.047 0.050 0.035 0.036
3Q2021 Aug 23, 2021 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.047 0.047 0.037 0.030
2Q2021 May 25, 2021 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.049 0.046 0.037 0.036
1Q2021 Feb 24, 2021 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.048 0.047 0.039 0.041
4Q2020 Nov 23, 2020 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.048 0.050 0.040 0.042
3Q2020 Aug 18, 2020 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.041 0.051 0.026 0.033
2Q2020 May 19, 2020 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.036 0.037 0.026 0.027
1Q2020 Feb 21, 2020 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.036 0.036 0.026 0.029
4Q2019 Nov 25, 2019 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.034 0.030 0.024 0.019
3Q2019 Aug 28, 2019 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.042 0.040 0.033 0.031
2Q2019 May 23, 2019 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.047 0.042 0.031 0.034
1Q2019 Feb 22, 2019 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.049 0.044 0.029 0.034
4Q2018 Nov 16, 2018 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.050 0.053 0.026 0.028
3Q2018 Aug 28, 2018 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.052 0.053 0.029 0.023
2Q2018 May 23, 2018 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.057 0.050 0.033 0.029
1Q2018 Feb 23, 2018 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.050 0.053 0.036 0.036
4Q2017 Nov 17, 2017 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.046 0.054 0.032 0.040
3Q2017 Aug 11, 2017 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.046 0.052 0.032 0.029
2Q2017 May 19, 2017 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.044 0.034 0.026 0.031
1Q2017 Feb 24, 2017 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.044 0.043 0.018 0.022
4Q2016 Nov 29, 2016 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.046 0.052 0.023 0.025
3Q2016 Aug 24, 2016 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.045 0.049 0.020 0.014
2Q2016 May 24, 2016 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.042 0.035 0.025 0.024
1Q2016 Feb 23, 2016 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.044 0.042 0.031 0.034
4Q2015 Nov 20, 2015 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.045 0.049 0.029 0.031
3Q2015 Aug 17, 2015 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.042 0.046 0.028 0.026
2Q2015 May 22, 2015 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.040 0.037 0.028 0.028
1Q2015 Feb 26, 2015 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.038 0.039 0.029 0.029
4Q2014 Nov 20, 2014 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.038 0.039 0.031 0.030
3Q2014 Aug 22, 2014 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.041 0.040 0.030 0.029
2Q2014 May 22, 2014 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.029 0.037 0.024 0.031
1Q2014 Feb 21, 2014 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.022 0.017
4Q2013 Nov 19, 2013 2DBP-01 2080 SHOESTRING - SITE 1 TAP 2 0.013 0.007



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