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This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.

Chemical and radiological sample results

MS0580004 , Oak Hill Water Assn

35 of the 72 analytes this system has been tested for have been detected at least once, across 333 samples on record.

The other 37 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.

Across all 333 samples on record, detections range from October 15, 2003 to June 23, 2026. These figures cover the whole record.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

What has been detected, ever

Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.

Every analyte ever detected for Oak Hill Water Assn, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Copper, Free 1022 Inorganic Chemical 62 of 62 results Sep 25, 2007 Sep 13, 2023
Barium 1010 Inorganic Chemical 38 of 38 results Oct 15, 2003 Jun 23, 2026
Fluoride 1025 Inorganic Chemical 30 of 39 results Oct 15, 2003 Jun 23, 2026
Nickel 1036 Inorganic Chemical 29 of 37 results Mar 15, 2004 Mar 18, 2025
Chromium 1020 Inorganic Chemical 24 of 38 results Oct 15, 2003 Mar 24, 2020
Arsenic 1005 Inorganic Chemical 21 of 38 results Mar 15, 2004 Mar 18, 2025
Lead 1030 Inorganic Chemical 21 of 62 results Sep 25, 2007 Sep 13, 2023
TTHM 2950 Organic Chemical 17 of 19 results Jul 26, 2004 Sep 10, 2025
Sodium 1052 Inorganic Chemical 14 of 14 results May 12, 2016 Jun 23, 2026
Bromoform 2942 Organic Chemical 12 of 15 results Jun 29, 2010 Sep 10, 2025
Selenium 1045 Inorganic Chemical 11 of 38 results Mar 15, 2004 May 9, 2017
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 12, 2011 Oct 11, 2012
Sulfate 1055 Inorganic Chemical 8 of 9 results Oct 15, 2003 May 12, 2016
Dibromochloromethane 2944 Organic Chemical 5 of 15 results Mar 13, 2024 Sep 10, 2025
Xylenes, Total 2955 Organic Chemical 5 of 43 results Aug 18, 2010 Sep 6, 2022
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 2 of 19 results Jun 29, 2010 Apr 22, 2019
Ethylbenzene 2992 Organic Chemical 2 of 43 results May 9, 2018 Aug 21, 2018
Combined Radium (-226 & -228) 4010 Radionuclide 2 of 12 results Sep 20, 2012 Dec 10, 2012
Radium-226 4020 Radionuclide 2 of 12 results Sep 20, 2012 Dec 10, 2012
Dibromoacetic Acid 2454 Organic Chemical 1 of 15 results Apr 22, 2019 Apr 22, 2019
Calcium 1016 Inorganic Chemical 1 of 1 result May 12, 2016 May 12, 2016
Chloride 1017 Inorganic Chemical 1 of 1 result May 12, 2016 May 12, 2016
Iron 1028 Inorganic Chemical 1 of 1 result May 12, 2016 May 12, 2016
Magnesium 1031 Inorganic Chemical 1 of 1 result May 12, 2016 May 12, 2016
Manganese 1032 Inorganic Chemical 1 of 1 result May 12, 2016 May 12, 2016
Potassium 1042 Inorganic Chemical 1 of 1 result May 12, 2016 May 12, 2016
Residue, Total, Filterable 1057 Water Quality 1 of 1 result May 12, 2016 May 12, 2016
Carbon Dioxide 1901 Water Quality 1 of 1 result May 12, 2016 May 12, 2016
Color 1905 Water Quality 1 of 1 result May 12, 2016 May 12, 2016
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result May 12, 2016 May 12, 2016
Alkalinity, Total 1927 Water Quality 1 of 1 result May 12, 2016 May 12, 2016
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result May 12, 2016 May 12, 2016
Calculated Sodium NACA Water Quality 1 of 1 result May 12, 2016 May 12, 2016
PH, Field Result PHFD Water Quality 1 of 1 result May 12, 2016 May 12, 2016
Gross Alpha Particle Activity 4109 Radionuclide 1 of 2 results Dec 10, 2012 Dec 10, 2012

No date range is applied: this list draws on every sample on record. Show the last two years only.

The most recent samples, result by result

The table below lists 211–220 of 333 samples, newest first — collected August 23, 2011 to February 15, 2012. The summary above covers all 333.

61 results from the 10 samples listed here: 11 detected, 50 not detected. Across the whole record it is 331 of 2,009. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Chemical and radiological sample results for Oak Hill Water Assn, every result from 211 to 220 of 333 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Feb 15, 2012 13:05
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
120216-100
Laboratory
Radiation Safety Engineering
1 pci/l , sample collected Feb 15, 2012 13:05, sampling point TF104 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.312 pci/l Minimum Reporting Level , sample collected Feb 15, 2012 13:05, sampling point TF104 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.312 pci/l Minimum Reporting Level , sample collected Feb 15, 2012 13:05, sampling point TF104 Radium-226 4020 EPA method 903.1 Jan 1, 2012 – Mar 31, 2012
Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Feb 15, 2012 13:05, sampling point TF104 Radium-228 4030 EPA method 904.0 Jan 1, 2012 – Mar 31, 2012
Collected
Feb 15, 2012 13:05
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
120216-100RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 15, 2012 13:05, sampling point TF104 Combined Uranium 4006 EPA method 200.8 Jan 1, 2012 – Mar 31, 2012
Collected
Dec 12, 2011 15:15
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
111213-154
Laboratory
Radiation Safety Engineering
1 pci/l , sample collected Dec 12, 2011 15:15, sampling point TF104 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.312 pci/l Minimum Reporting Level , sample collected Dec 12, 2011 15:15, sampling point TF104 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.312 pci/l Minimum Reporting Level , sample collected Dec 12, 2011 15:15, sampling point TF104 Radium-226 4020 EPA method 903.1 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Dec 12, 2011 15:15, sampling point TF104 Radium-228 4030 EPA method 904.0 Oct 1, 2011 – Dec 31, 2011
Collected
Oct 24, 2011 03:05
Sampling point
TF080
Sample type
Routine
Lab sample
111025-037VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Xylenes, Total 2955 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 O-Dichlorobenzene 2968 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 P-Dichlorobenzene 2969 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Vinyl Chloride 2976 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 1,1-Dichloroethylene 2977 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 1,2-Dichloroethane 2980 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 1,1,1-Trichloroethane 2981 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Carbon Tetrachloride 2982 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 1,2-Dichloropropane 2983 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 1,1,2-Trichloroethane 2985 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Benzene 2990 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Toluene 2991 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2011 03:05, sampling point TF080 Styrene 2996 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Collected
Aug 23, 2011 03:10
Sampling point
TF080
Sample type
Routine
Lab sample
110824-010VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Xylenes, Total 2955 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 O-Dichlorobenzene 2968 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 P-Dichlorobenzene 2969 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Vinyl Chloride 2976 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 1,1-Dichloroethylene 2977 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 1,2-Dichloroethane 2980 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 1,1,1-Trichloroethane 2981 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Carbon Tetrachloride 2982 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 1,2-Dichloropropane 2983 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 1,1,2-Trichloroethane 2985 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Benzene 2990 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Toluene 2991 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 03:10, sampling point TF080 Styrene 2996 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Collected
Aug 23, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110824-041PB
Laboratory
MSDH Lab
0.4555 mg/l , sample collected Aug 23, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0055 mg/l , sample collected Aug 23, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 23, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110824-040PB
Laboratory
MSDH Lab
0.1127 mg/l , sample collected Aug 23, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0343 mg/l , sample collected Aug 23, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 23, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110824-038PB
Laboratory
MSDH Lab
0.3183 mg/l , sample collected Aug 23, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.001 mg/l , sample collected Aug 23, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 23, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110824-037PB
Laboratory
MSDH Lab
0.2774 mg/l , sample collected Aug 23, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0008 mg/l , sample collected Aug 23, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 23, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110824-036PB
Laboratory
MSDH Lab
0.2723 mg/l , sample collected Aug 23, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 23, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011

Routine (10).