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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 171–180 of 333 samples, newest first — collected August 27, 2013 to August 18, 2014. The summary above covers all 333.

37 results from the 10 samples listed here: 6 detected, 31 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 171 to 180 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
Aug 18, 2014 05:38
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140819-034PB
Laboratory
MSDH Lab
0.0739 mg/l , sample collected Aug 18, 2014 05:38, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 18, 2014 05:38, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Aug 18, 2014 06:10
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140819-033PB
Laboratory
MSDH Lab
0.0066 mg/l , sample collected Aug 18, 2014 06:10, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 18, 2014 06:10, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
May 12, 2014 14:40
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
140513-074NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 12, 2014 14:40, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 12, 2014 14:40, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 12, 2014 14:40, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Collected
May 12, 2014 14:20
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
140513-071NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 12, 2014 14:20, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 12, 2014 14:20, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 12, 2014 14:20, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Collected
May 12, 2014 14:00
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
140513-066NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 12, 2014 14:00, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 12, 2014 14:00, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 12, 2014 14:00, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Collected
Mar 31, 2014 03:10
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
140401-077IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 03:10, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.171 mg/l , sample collected Mar 31, 2014 03:10, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 03:10, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 03:10, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 03:10, sampling point TF102 Fluoride 1025 EPA method 300.0 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 03:10, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0016 mg/l , sample collected Mar 31, 2014 03:10, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 03:10, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 03:10, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 03:10, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 03:10, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Feb 24, 2014 02:10
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
140225-032CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Feb 24, 2014 02:10, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2012 – Dec 31, 2014
Collected
Sep 16, 2013 03:00
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
130917-019CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 16, 2013 03:00, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2011 – Dec 31, 2013
Collected
Aug 27, 2013 03:10
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
130828-004TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 27, 2013 03:10, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
3.28 ug/l , sample collected Aug 27, 2013 03:10, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 27, 2013 03:10, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 27, 2013 03:10, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
3.28 ug/l , sample collected Aug 27, 2013 03:10, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2011 – Dec 31, 2013
Collected
Aug 27, 2013 03:10
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
130828-004HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 27, 2013 03:10, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 27, 2013 03:10, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 27, 2013 03:10, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 27, 2013 03:10, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 27, 2013 03:10, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Aug 27, 2013 03:10, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2011 – Dec 31, 2013

Routine (10).