OHA Drinking Water Services
OR41
PWS ID: 00708 ---- ROCKAWAY BEACH, 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
3Q2024 Aug 06, 2024 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.041 0.029 0.014 0.007
2Q2024 May 02, 2024 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.048 0.041 0.017 0.014
1Q2024 Feb 26, 2024 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.051 0.049 0.018 0.017
4Q2023 Nov 21, 2023 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.052 0.062 0.019 0.025
3Q2023 Aug 08, 2023 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.047 0.048 0.015 0.014
2Q2023 May 09, 2023 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.044 0.043 0.015 0.015
1Q2023 Mar 14, 2023 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.045 0.043 0.016 0.015
4Q2022 Nov 15, 2022 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.045 0.050 0.016 0.017
3Q2022 Aug 02, 2022 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.046 0.042 0.018 0.015
2Q2022 May 17, 2022 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.049 0.045 0.017 0.018
1Q2022 Mar 10, 2022 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.048 0.048 0.015 0.016
4Q2021 Nov 02, 2021 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.048 0.054 0.015 0.019
3Q2021 Aug 18, 2021 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.048 0.047 0.011 0.011
2Q2021 May 11, 2021 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.050 0.042 0.010 0.010
1Q2021 Feb 04, 2021 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.052 0.051 0.012 0.010
4Q2020 Nov 05, 2020 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.052 0.058 0.012 0.012
3Q2020 Aug 10, 2020 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.054 0.055 0.012 0.012
2Q2020 May 12, 2020 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.049 0.048 0.013 0.014
1Q2020 Feb 10, 2020 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.048 0.047 0.011 0.012
4Q2019 Nov 05, 2019 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.048 0.056 0.011 0.010
3Q2019 Aug 05, 2019 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.042 0.043 0.013 0.012
2Q2019 May 14, 2019 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.039 0.040 0.013 0.012
1Q2019 Feb 12, 2019 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.039 0.037 0.013 0.012
4Q2018 Nov 06, 2018 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.045 0.041 0.012 0.015
3Q2018 Aug 07, 2018 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.048 0.043 0.012 0.011
2Q2018 May 01, 2018 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.050 0.049 0.012 0.011
1Q2018 Feb 20, 2018 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.047 0.055 0.012 0.012
4Q2017 Nov 14, 2017 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.040 0.046 0.018 0.014
3Q2017 Aug 08, 2017 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.037 0.037 0.014 0.017
2Q2017 May 08, 2017 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.037 0.032 0.014 0.014
1Q2017 Feb 21, 2017 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.040 0.037 0.013 0.019
4Q2016 Nov 28, 2016 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.044 0.043 0.010 0.006
3Q2016 Aug 10, 2016 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.044 0.045 0.010 0.011
2Q2016 May 10, 2016 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.040 0.042 0.012 0.009
1Q2016 Feb 02, 2016 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.037 0.041 0.012 0.015
4Q2015 Nov 02, 2015 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.032 0.037 0.008 0.009
3Q2015 Aug 03, 2015 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.031 0.029 0.009 0.012
2Q2015 May 05, 2015 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.032 0.030 0.006 0.006
1Q2015 Feb 04, 2015 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.033 0.030 0.006 0.005
4Q2014 Nov 24, 2014 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.038 0.036 0.010 0.007
3Q2014 Aug 05, 2014 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.051 0.038 0.008 0.011
2Q2014 May 13, 2014 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.042 0.051 0.006 0.008
1Q2014 Feb 06, 2014 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.034 0.004
4Q2013 Nov 21, 2013 2DBP-01 SM-1 310 NORTHSLOPE WAY 0.023 0



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