OHA Drinking Water Services
OR41
PWS ID: 00202 ---- COLTON WATER DISTRICT
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 Oct 15, 2024 2DBP-01 ROCKNEY RD 0.013 0.016 0.018 0.024
3Q2024 Jul 23, 2024 2DBP-01 ROCKNEY RD 0.019 0.006 0.031 0.006
2Q2024 Apr 02, 2024 2DBP-01 ROCKNEY RD 0.028 0.023 0.047 0.036
1Q2024 2DBP-01 ROCKNEY RD 0.0128 0.0128 0.0807 0.0807
4Q2023 Dec 12, 2023 2DBP-01 ROCKNEY RD 0.035 0.043 0.057 0.081
3Q2023 2DBP-01 ROCKNEY RD 0.026 0.034
2Q2023 2DBP-01 ROCKNEY RD 0.026 0.034
1Q2023 Mar 21, 2023 2DBP-01 ROCKNEY RD 0.022 0.026 0.027 0.034
4Q2022 2DBP-01 ROCKNEY RD 0.018 0.020
3Q2022 2DBP-01 ROCKNEY RD 0.027 0.040
2Q2022 Jun 28, 2022 2DBP-01 ROCKNEY RD 0.031 0.024 0.036 0.033
1Q2022 2DBP-01 ROCKNEY RD 0.029 0.027
4Q2021 Dec 07, 2021 2DBP-01 ROCKNEY RD 0.031 0.032 0.037 0.043
3Q2021 Sep 28, 2021 2DBP-01 ROCKNEY RD 0.029 0.032 0.028 0.028
2Q2021 Apr 13, 2021 2DBP-01 ROCKNEY RD 0.027 0.022 0.031 0.026
1Q2021 2DBP-01 ROCKNEY RD 0.030 0.034
4Q2020 Dec 22, 2020 2DBP-01 ROCKNEY RD 0.030 0.030 0.034 0.033
3Q2020 Jul 28, 2020 2DBP-01 ROCKNEY RD 0.027 0.030 0.029 0.036
2Q2020 May 12, 2020 2DBP-01 ROCKNEY RD 0.025 0.026 0.027 0.027
1Q2020 2DBP-01 ROCKNEY RD 0.027 0.031
4Q2019 Oct 29, 2019 2DBP-01 ROCKNEY RD 0.025 0.023 0.029 0.021
3Q2019 Jul 02, 2019 2DBP-01 ROCKNEY RD 0.027 0.027 0.035 0.034
2Q2019 2DBP-01 ROCKNEY RD 0.027 0.039
1Q2019 Mar 26, 2019 2DBP-01 ROCKNEY RD 0.021 0.027 0.032 0.039
4Q2018 2DBP-01 ROCKNEY RD 0.014 0.025
3Q2018 2DBP-01 ROCKNEY RD 0.028 0.060
2Q2018 Apr 24, 2018 2DBP-01 ROCKNEY RD 0.028 0.023 0.060 0.048
1Q2018 2DBP-01 ROCKNEY RD 0.023 0.050
4Q2017 Nov 28, 2017 2DBP-01 ROCKNEY RD 0.023 0.029 0.050 0.065
3Q2017 2DBP-01 ROCKNEY RD 0.005 0.005
2Q2017 Apr 25, 2017 2DBP-01 ROCKNEY RD 0.014 0.005 0.020 0.005
1Q2017 2DBP-01 ROCKNEY RD 0.023 0.036
4Q2016 2DBP-01 ROCKNEY RD 0.020 0.033
3Q2016 Aug 09, 2016 2DBP-01 ROCKNEY RD 0.020 0.021 0.033 0.034
2Q2016 2DBP-01 ROCKNEY RD 0.023 0.037
1Q2016 Mar 08, 2016 2DBP-01 ROCKNEY RD 0.026 0.021 0.039 0.034
4Q2015 2DBP-01 ROCKNEY RD 0.029 0.042
3Q2015 Sep 29, 2015 2DBP-01 ROCKNEY RD 0.031 0.029 0.052 0.043
2Q2015 May 26, 2015 2DBP-01 ROCKNEY RD 0.032 0.032 0.055 0.051
1Q2015 Mar 24, 2015 2DBP-01 ROCKNEY RD 0.031 0.030 0.056 0.054
4Q2014 Dec 09, 2014 2DBP-01 ROCKNEY RD 0.033 0.034 0.065 0.070
3Q2014 2DBP-01 ROCKNEY RD 0.031 0.048
2Q2014 Apr 29, 2014 2DBP-01 ROCKNEY RD 0.016 0.031 0.024 0.048
1Q2014 2DBP-01 ROCKNEY RD
4Q2013 2DBP-01 ROCKNEY RD
3Q2013 Sep 24, 2013 2DBP-01 ROCKNEY RD 0.037 0.049
2Q2013 2DBP-01 ROCKNEY RD
1Q2013 2DBP-01 ROCKNEY RD
4Q2012 2DBP-01 ROCKNEY RD
3Q2012 2DBP-01 ROCKNEY RD
2Q2012 2DBP-01 ROCKNEY RD



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