OHA Drinking Water Services

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.

Monitoring
Period
Last
Sample
Sample
Point
Location
 
TTHM LRAA
MCL = 0.080
TTHM
OEL
HAA5 LRAA
MCL = 0.060
HAA5
OEL
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
 



For further information on this public water system, click on the area of interest below:
System Info :: Report for Lenders :: Alerts :: Violations :: Compliance & Enforcement :: Contacts & Advisories :: Site Visits :: Public Notice
Coliform Summary :: Coliform Results :: Sampling Schedule for Coliform :: Groundwater/GWUDI Source Details :: Plan Review :: Annual Fee
Chemical Group Summary :: Latest Chemical Results :: Entry Point Detects :: Single Analyte Results 
Chemical Schedule Summary :: Chemical Schedule Details
Lead & Copper :: Corrosion Control (LCR) :: Nitrate :: Arsenic :: Radionuclides :: GWR 4-Log :: LT2 :: Cyanotoxins :: PFAS
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 3943