OHA Drinking Water Services
OR41
PWS ID: 00554 ---- NEHALEM, 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
3Q2025 Jul 01, 2025 2DBP-01 SM-2 - 13405 THOMPSON RD 0.042 0.040 0.032 0.024
2Q2025 May 06, 2025 2DBP-01 SM-2 - 13405 THOMPSON RD 0.040 0.037 0.033 0.030
1Q2025 Feb 04, 2025 2DBP-01 SM-2 - 13405 THOMPSON RD 0.041 0.038 0.034 0.032
4Q2024 Nov 05, 2024 2DBP-01 SM-2 - 13405 THOMPSON RD 0.042 0.049 0.038 0.045
3Q2024 Aug 06, 2024 2DBP-01 SM-2 - 13405 THOMPSON RD 0.044 0.039 0.038 0.030
2Q2024 Apr 30, 2024 2DBP-01 SM-2 - 13405 THOMPSON RD 0.043 0.041 0.037 0.037
1Q2024 Feb 06, 2024 2DBP-01 SM-2 - 13405 THOMPSON RD 0.042 0.042 0.038 0.040
4Q2023 Nov 01, 2023 2DBP-01 SM-2 - 13405 THOMPSON RD 0.043 0.051 0.036 0.044
3Q2023 Aug 02, 2023 2DBP-01 SM-2 - 13405 THOMPSON RD 0.046 0.037 0.043 0.028
2Q2023 May 02, 2023 2DBP-01 SM-2 - 13405 THOMPSON RD 0.048 0.043 0.042 0.043
1Q2023 Feb 14, 2023 2DBP-01 SM-2 - 13405 THOMPSON RD 0.050 0.049 0.042 0.042
4Q2022 Nov 01, 2022 2DBP-01 SM-2 - 13405 THOMPSON RD 0.049 0.060 0.042 0.056
3Q2022 Jul 19, 2022 2DBP-01 SM-2 - 13405 THOMPSON RD 0.050 0.043 0.041 0.026
2Q2022 May 03, 2022 2DBP-01 SM-2 - 13405 THOMPSON RD 0.058 0.047 0.053 0.042
1Q2022 Mar 02, 2022 2DBP-01 SM-2 - 13405 THOMPSON RD 0.060 0.057 0.056 0.053
4Q2021 Nov 02, 2021 2DBP-01 SM-2 - 13405 THOMPSON RD 0.062 0.072 0.059 0.070
3Q2021 Aug 17, 2021 2DBP-01 SM-2 - 13405 THOMPSON RD 0.064 0.063 0.057 0.056
2Q2021 May 18, 2021 2DBP-01 SM-2 - 13405 THOMPSON RD 0.060 0.055 0.050 0.049
1Q2021 Feb 16, 2021 2DBP-01 SM-2 - 13405 THOMPSON RD 0.070 0.058 0.055 0.049
4Q2020 Nov 17, 2020 2DBP-01 SM-2 - 13405 THOMPSON RD 0.072 0.081 0.053 0.064
3Q2020 Aug 18, 2020 2DBP-01 SM-2 - 13405 THOMPSON RD 0.067 0.067 0.037 0.045
2Q2020 May 19, 2020 2DBP-01 SM-2 - 13405 THOMPSON RD 0.068 0.071 0.038 0.042
1Q2020 Feb 18, 2020 2DBP-01 SM-2 - 13405 THOMPSON RD 0.060 0.059 0.037 0.031
4Q2019 Nov 20, 2019 2DBP-01 SM-2 - 13405 THOMPSON RD 0.058 0.064 0.039 0.031
3Q2019 Sep 03, 2019 2DBP-01 SM-2 - 13405 THOMPSON RD 0.062 0.060 0.057 0.049
2Q2019 Apr 30, 2019 2DBP-01 SM-2 - 13405 THOMPSON RD 0.060 0.057 0.053 0.059
1Q2019 Feb 18, 2019 2DBP-01 SM-2 - 13405 THOMPSON RD 0.056 0.057 0.044 0.048
4Q2018 Nov 20, 2018 2DBP-01 SM-2 - 13405 THOMPSON RD 0.054 0.066 0.040 0.055
3Q2018 Aug 14, 2018 2DBP-01 SM-2 - 13405 THOMPSON RD 0.051 0.051 0.032 0.027
2Q2018 May 01, 2018 2DBP-01 SM-2 - 13405 THOMPSON RD 0.048 0.044 0.030 0.030
1Q2018 Feb 20, 2018 2DBP-01 SM-2 - 13405 THOMPSON RD 0.050 0.046 0.031 0.030
4Q2017 Nov 14, 2017 2DBP-01 SM-2 - 13405 THOMPSON RD 0.049 0.058 0.030 0.038
3Q2017 Sep 05, 2017 2DBP-01 SM-2 - 13405 THOMPSON RD 0.050 0.047 0.042 0.022
2Q2017 May 16, 2017 2DBP-01 SM-2 - 13405 THOMPSON RD 0.050 0.047 0.049 0.043
1Q2017 Feb 14, 2017 2DBP-01 SM-2 - 13405 THOMPSON RD 0.053 0.046 0.054 0.047
4Q2016 Nov 01, 2016 2DBP-01 SM-2 - 13405 THOMPSON RD 0.055 0.064 0.059 0.074
3Q2016 Aug 16, 2016 2DBP-01 SM-2 - 13405 THOMPSON RD 0.055 0.053 0.048 0.048
2Q2016 May 31, 2016 2DBP-01 SM-2 - 13405 THOMPSON RD 0.060 0.055 0.044 0.046
1Q2016 Mar 01, 2016 2DBP-01 SM-2 - 13405 THOMPSON RD 0.063 0.055 0.041 0.043
4Q2015 Nov 17, 2015 2DBP-01 SM-2 - 13405 THOMPSON RD 0.062 0.071 0.035 0.045
3Q2015 Aug 18, 2015 2DBP-01 SM-2 - 13405 THOMPSON RD 0.071 0.065 0.048 0.030
2Q2015 May 09, 2015 2DBP-01 SM-2 - 13405 THOMPSON RD 0.066 0.068 0.047 0.047
1Q2015 Feb 18, 2015 2DBP-01 SM-2 - 13405 THOMPSON RD 0.058 0.057 0.041 0.043
4Q2014 Nov 12, 2014 2DBP-01 SM-2 - 13405 THOMPSON RD 0.056 0.075 0.043 0.063
3Q2014 Aug 05, 2014 2DBP-01 SM-2 - 13405 THOMPSON RD 0.046 0.046 0.032 0.024
2Q2014 May 06, 2014 2DBP-01 SM-2 - 13405 THOMPSON RD 0.030 0.039 0.025 0.027
1Q2014 Feb 04, 2014 2DBP-01 SM-2 - 13405 THOMPSON RD 0.022 0.023
4Q2013 Nov 06, 2013 2DBP-01 SM-2 - 13405 THOMPSON RD 0.015 0.016



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