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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 151–160 of 333 samples, newest first — collected November 16, 2015 to August 1, 2016. The summary above covers all 333.

54 results from the 10 samples listed here: 17 detected, 37 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 151 to 160 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 1, 2016 03:40
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
160802-005VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 1, 2016 03:40, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Collected
Jun 14, 2016 03:00
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
160615-024CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 14, 2016 03:00, sampling point TF104 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
Jun 14, 2016 03:30
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
160615-023CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 14, 2016 03:30, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
May 12, 2016
Sampling point
WL004 Well W004
Sample type
Routine
Lab sample
160513-005PC
Laboratory
MSDH Lab
28.5 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Calcium 1016 EPA method 200.8 Not recorded
72.65 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Chloride 1017 EPA method 300.0 Not recorded
0.079 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Fluoride 1025 EPA method 380-75WE Not recorded
0.14 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Iron 1028 EPA method 200.8 Not recorded
7.06 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Magnesium 1031 EPA method 200.8 Not recorded
0.053 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Manganese 1032 EPA method 200.8 Not recorded
3.32 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Potassium 1042 EPA method 200.8 Not recorded
43.3 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Sodium 1052 EPA method 200.8 Not recorded
4.773 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Sulfate 1055 EPA method 300.0 Not recorded
223 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Residue, Total, Filterable 1057 EPA method CALCUL LAB Not recorded
2 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Carbon Dioxide 1901 EPA method CALCUL LAB Not recorded
5 units The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Color 1905 EPA method 2120B Not recorded
100.5 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Hardness, Total (As Caco3) 1915 EPA method CALCUL LAB Not recorded
104 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Alkalinity, Total 1927 EPA method 2320B Not recorded
0.1 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Iron, Field Result FEFD EPA method 3500AL-D Not recorded
49.3 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 Calculated Sodium NACA EPA method CALCUL LAB Not recorded
8.1 ph The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected May 12, 2016, sampling point WL004 PH, Field Result PHFD EPA method 3500AL-D Not recorded
Collected
May 9, 2016 14:45
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
160510-018NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 9, 2016 14:45, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 9, 2016 14:45, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 9, 2016 14:45, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
May 9, 2016 14:00
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
160510-017NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 9, 2016 14:00, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 9, 2016 14:00, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 9, 2016 14:00, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
May 9, 2016 14:15
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
160510-016NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 9, 2016 14:15, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 9, 2016 14:15, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 9, 2016 14:15, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Feb 23, 2016 01:25
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
160224-025CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Feb 23, 2016 01:25, sampling point TF104 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
Feb 23, 2016 01:10
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
160224-023CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Feb 23, 2016 01:10, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
Nov 16, 2015 03:35
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
151117-005NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 16, 2015 03:35, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 16, 2015 03:35, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 16, 2015 03:35, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015

Routine (10).