OHA Drinking Water Services
OR41
PWS ID: 00966 ---- YACHATS, 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
3Q2020 Sep 09, 2020 2DBP-01 S1-1 890 HORIZON HILL RD 0.019 0.010 0.013 0.003
2Q2020 2DBP-01 S1-1 890 HORIZON HILL RD 0.032 0.023
1Q2020 Mar 11, 2020 2DBP-01 S1-1 890 HORIZON HILL RD 0.026 0.025 0.017 0.023
4Q2019 Nov 20, 2019 2DBP-01 S1-1 890 HORIZON HILL RD 0.033 0.035 0.023 0.026
3Q2019 Sep 11, 2019 2DBP-01 S1-1 890 HORIZON HILL RD 0.025 0.036 0.015 0.023
2Q2019 May 01, 2019 2DBP-01 S1-1 890 HORIZON HILL RD 0.009 0.010 0.004 0.006
1Q2019 2DBP-01 S1-1 890 HORIZON HILL RD 0.009 0.004
4Q2018 Nov 28, 2018 2DBP-01 S1-1 890 HORIZON HILL RD 0.007 0.011 0.003 0.006
3Q2018 Sep 26, 2018 2DBP-01 S1-1 890 HORIZON HILL RD 0.004 0.004 0 0
2Q2018 Jun 27, 2018 2DBP-01 S1-1 890 HORIZON HILL RD 0.008 0.004 0 0
1Q2018 Mar 14, 2018 2DBP-01 S1-1 890 HORIZON HILL RD 0.007 0.006 0 0
4Q2017 2DBP-01 S1-1 890 HORIZON HILL RD 0.007 0
3Q2017 Sep 13, 2017 2DBP-01 S1-1 890 HORIZON HILL RD 0.007 0.010 0 0
2Q2017 Jun 14, 2017 2DBP-01 S1-1 890 HORIZON HILL RD 0.004 0.003 0 0
1Q2017 Mar 29, 2017 2DBP-01 S1-1 890 HORIZON HILL RD 0.006 0.004 0 0
4Q2016 2DBP-01 S1-1 890 HORIZON HILL RD 0.006 0
3Q2016 Sep 28, 2016 2DBP-01 S1-1 890 HORIZON HILL RD 0.005 0.007 0 0
2Q2016 Jun 15, 2016 2DBP-01 S1-1 890 HORIZON HILL RD 0.005 0.005 0 0
1Q2016 Mar 23, 2016 2DBP-01 S1-1 890 HORIZON HILL RD 0.005 0.003 0 0
4Q2015 Dec 23, 2015 2DBP-01 S1-1 890 HORIZON HILL RD 0.005 0.005 0 0
3Q2015 Sep 23, 2015 2DBP-01 S1-1 890 HORIZON HILL RD 0.007 0.006 0.002 0
2Q2015 Jun 17, 2015 2DBP-01 S1-1 890 HORIZON HILL RD 0.008 0.008 0.002 0.002
1Q2015 Mar 18, 2015 2DBP-01 S1-1 890 HORIZON HILL RD 0.007 0.007 0.002 0.004
4Q2014 Dec 17, 2014 2DBP-01 S1-1 890 HORIZON HILL RD 0.007 0.009 0.002 0.005
3Q2014 2DBP-01 S1-1 890 HORIZON HILL RD 0.005 0
2Q2014 Jun 11, 2014 2DBP-01 S1-1 890 HORIZON HILL RD 0.004 0.005 0 0
1Q2014 Mar 19, 2014 2DBP-01 S1-1 890 HORIZON HILL RD 0.002 0
4Q2013 Dec 18, 2013 2DBP-01 S1-1 890 HORIZON HILL RD 0.001 0



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