OHA Drinking Water Services
OR41
PWS ID: 00681 ---- OCHOCO WEST WTR & SAN AUTHORITY
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)
04/01/2023 06/30/2023 2Q2023 EP FOR SPRINGS AND WELL EP-A ( 0.003
01/01/2023 03/31/2023 1Q2023 EP FOR SPRINGS AND WELL EP-A ( 0.002
10/01/2022 12/31/2022 4Q2022 EP FOR SPRINGS AND WELL EP-A ( 0.001
07/01/2022 09/30/2022 3Q2022 EP FOR SPRINGS AND WELL EP-A ( 0.001
10/01/2021 12/31/2021 4Q2021 EP FOR SPRINGS AND WELL EP-A ( 0.000
10/01/2013 12/31/2013 4Q2013 EP FOR SPRINGS AND WELL EP-A ( 0.003
07/01/2013 09/30/2013 3Q2013 EP FOR SPRINGS AND WELL EP-A ( 0.003
04/01/2013 06/30/2013 2Q2013 EP FOR SPRINGS AND WELL EP-A ( 0.003
01/01/2013 03/31/2013 1Q2013 EP FOR SPRINGS AND WELL EP-A ( 0.003
10/01/2012 12/31/2012 4Q2012 EP FOR SPRINGS AND WELL EP-A ( 0.003
07/01/2012 09/30/2012 3Q2012 EP FOR SPRINGS AND WELL EP-A ( 0.003
04/01/2012 06/30/2012 2Q2012 EP FOR SPRINGS AND WELL EP-A ( 0.003
01/01/2012 03/31/2012 1Q2012 EP FOR SPRINGS AND WELL EP-A ( 0.003
10/01/2011 12/31/2011 4Q2011 EP FOR SPRINGS AND WELL EP-A ( 0.003
07/01/2011 09/30/2011 3Q2011 EP FOR SPRINGS AND WELL EP-A ( 0.003
04/01/2011 06/30/2011 2Q2011 EP FOR SPRINGS AND WELL EP-A ( 0.003
01/01/2011 03/31/2011 1Q2011 EP FOR SPRINGS AND WELL EP-A ( 0.003
10/01/2010 12/31/2010 4Q2010 EP FOR SPRINGS AND WELL EP-A ( 0.003
07/01/2010 09/30/2010 3Q2010 EP FOR SPRINGS AND WELL EP-A ( 0.003
04/01/2010 06/30/2010 2Q2010 EP FOR SPRINGS AND WELL EP-A ( 0.008
01/01/2010 03/31/2010 1Q2010 EP FOR SPRINGS AND WELL EP-A ( 0.002
10/01/2009 12/31/2009 4Q2009 EP FOR SPRINGS AND WELL EP-A ( 0.001




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