OHA Drinking Water Services
OR41
PWS ID: 05364 ---- MT TERRACE MHP
Arsenic Running Annual Averages

Results shown are only for quarterly or monthly monitoring schedules.
Averages are subject to change as new data is taken into consideration.

Arsenic MCL = 0.010 mg/L. MCL exceedances are indicated with red text.

MP Begin MP End MP Name Location Sample
Point		 Arsenic RAA
(mg/L)
07/01/2025 09/30/2025 3Q2025 POU FOR SITE #25 POU-01 (#25)0.006
04/01/2025 06/30/2025 2Q2025 POU FOR SITE #25 POU-01 (#25)0.006
01/01/2025 03/31/2025 1Q2025 POU FOR SITE #25 POU-01 (#25)0.006
10/01/2024 12/31/2024 4Q2024 POU FOR SITE #25 POU-01 (#25)0.003
07/01/2024 09/30/2024 3Q2024 POU FOR SITE #25 POU-01 (#25)0.000
04/01/2024 06/30/2024 2Q2024 POU FOR SITE #25 POU-01 (#25)0.000
01/01/2024 03/31/2024 1Q2024 POU FOR SITE #25 POU-01 (#25)0.000
04/01/2020 06/30/2020 2Q2020 POU FOR ARSENIC REMOVAL POU-250.001
01/01/2020 03/31/2020 1Q2020 POU FOR ARSENIC REMOVAL POU-250.001
10/01/2019 12/31/2019 4Q2019 POU FOR ARSENIC REMOVAL POU-250.001
07/01/2019 09/30/2019 3Q2019 POU FOR ARSENIC REMOVAL POU-250.001
04/01/2019 06/30/2019 2Q2019 EP FOR WELLS #1 & #4 EP-A0.010
01/01/2019 03/31/2019 1Q2019 EP FOR WELLS #1 & #4 EP-A0.012
10/01/2018 12/31/2018 4Q2018 EP FOR WELLS #1 & #4 EP-A0.019
07/01/2018 09/30/2018 3Q2018 EP FOR WELLS #1 & #4 EP-A0.019
04/01/2018 06/30/2018 2Q2018 EP FOR WELLS #1 & #4 EP-A0.019
01/01/2018 03/31/2018 1Q2018 EP FOR WELLS #1 & #4 EP-A0.021
10/01/2017 12/31/2017 4Q2017 EP FOR WELLS #1 & #4 EP-A0.019
07/01/2017 09/30/2017 3Q2017 EP FOR WELLS #1 & #4 EP-A0.014
04/01/2017 06/30/2017 2Q2017 EP FOR WELLS #1 & #4 EP-A0.009
01/01/2017 03/31/2017 1Q2017 EP FOR WELLS #1 & #4 EP-A0.004



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