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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

MS0260012 , City of Lexington

36 of the 74 analytes this system has been tested for have been detected at least once, across 317 samples on record.

The other 38 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 317 samples on record, detections range from October 12, 1993 to August 12, 2025. 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 City of Lexington, 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 145 of 165 results Oct 12, 1993 Jul 11, 2023
Lead 1030 Inorganic Chemical 104 of 165 results Oct 12, 1993 Jul 11, 2023
Barium 1010 Inorganic Chemical 20 of 20 results Sep 17, 2003 Feb 10, 2025
TTHM 2950 Organic Chemical 19 of 21 results Jun 7, 2004 Aug 12, 2025
Fluoride 1025 Inorganic Chemical 17 of 21 results Sep 17, 2003 May 16, 2022
Chloroform 2941 Organic Chemical 15 of 16 results Aug 6, 2007 Aug 12, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 15 of 22 results Aug 6, 2007 Mar 24, 2025
Bromodichloromethane 2943 Organic Chemical 13 of 16 results Aug 6, 2007 Aug 12, 2025
Dibromochloromethane 2944 Organic Chemical 11 of 16 results Aug 6, 2007 Aug 12, 2025
Dichloroacetic Acid 2451 Organic Chemical 10 of 15 results Sep 22, 2008 Aug 6, 2024
Trichloroacetic Acid 2452 Organic Chemical 9 of 15 results Sep 22, 2008 Aug 6, 2024
Chromium 1020 Inorganic Chemical 9 of 20 results Feb 9, 2004 Apr 20, 2020
Nitrate-Nitrite 1038 Inorganic Chemical 7 of 32 results May 17, 2004 Feb 6, 2012
Nitrate 1040 Inorganic Chemical 7 of 32 results May 17, 2004 Feb 6, 2012
Nickel 1036 Inorganic Chemical 6 of 20 results Feb 6, 2006 Jan 8, 2024
Sodium 1052 Inorganic Chemical 5 of 5 results Apr 9, 2009 Feb 5, 2024
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 10 results Mar 5, 2012 Oct 4, 2012
Sulfate 1055 Inorganic Chemical 5 of 5 results Sep 17, 2003 Apr 9, 2009
Selenium 1045 Inorganic Chemical 4 of 20 results Mar 14, 2005 Feb 6, 2006
Cadmium 1015 Inorganic Chemical 3 of 20 results Mar 14, 2005 Feb 6, 2006
Xylenes, Total 2955 Organic Chemical 1 of 19 results May 22, 2023 May 22, 2023
Monochloroacetic Acid 2450 Organic Chemical 1 of 15 results Aug 25, 2020 Aug 25, 2020
Calcium 1016 Inorganic Chemical 1 of 1 result Apr 9, 2009 Apr 9, 2009
Magnesium 1031 Inorganic Chemical 1 of 1 result Apr 9, 2009 Apr 9, 2009
Manganese 1032 Inorganic Chemical 1 of 1 result Apr 9, 2009 Apr 9, 2009
Potassium 1042 Inorganic Chemical 1 of 1 result Apr 9, 2009 Apr 9, 2009
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Apr 9, 2009 Apr 9, 2009
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Apr 9, 2009 Apr 9, 2009
Carbon Dioxide 1901 Water Quality 1 of 1 result Apr 9, 2009 Apr 9, 2009
Color 1905 Water Quality 1 of 1 result Apr 9, 2009 Apr 9, 2009
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Apr 9, 2009 Apr 9, 2009
Alkalinity, Total 1927 Water Quality 1 of 1 result Apr 9, 2009 Apr 9, 2009
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Apr 9, 2009 Apr 9, 2009
Calculated Sodium NACA Water Quality 1 of 1 result Apr 9, 2009 Apr 9, 2009
PH, Field Result PHFD Water Quality 1 of 1 result Apr 9, 2009 Apr 9, 2009
Temperature, Field Result TEMP Water Quality 1 of 1 result Apr 9, 2009 Apr 9, 2009

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 221–230 of 317 samples, newest first — collected May 2, 2000 to January 27, 2004. The summary above covers all 317.

94 results from the 10 samples listed here: 10 detected, 84 not detected. Across the whole record it is 445 of 1,327. 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 City of Lexington, every result from 221 to 230 of 317 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
Jan 27, 2004
Sampling point
ST060 Tank S060
Sample type
Routine
Lab sample
040128-072VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Dichloromethane 2964 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Benzene 2990 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Toluene 2991 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point ST060 Styrene 2996 EPA method 524.2 Jan 1, 2004 – Mar 31, 2004
Collected
Jan 27, 2004
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
040128-071VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 1,2,4-Trichlorobenzene 2378 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Cis-1,2-Dichloroethylene 2380 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Xylenes, Total 2955 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Dichloromethane 2964 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 O-Dichlorobenzene 2968 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 P-Dichlorobenzene 2969 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Vinyl Chloride 2976 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 1,1-Dichloroethylene 2977 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Trans-1,2-Dichloroethylene 2979 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 1,2-Dichloroethane 2980 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 1,1,1-Trichloroethane 2981 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Carbon Tetrachloride 2982 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 1,2-Dichloropropane 2983 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Trichloroethylene 2984 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 1,1,2-Trichloroethane 2985 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Tetrachloroethylene 2987 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Chlorobenzene 2989 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Benzene 2990 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Toluene 2991 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Ethylbenzene 2992 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 27, 2004, sampling point TF103 Styrene 2996 Jan 1, 2004 – Mar 31, 2004
Collected
Sep 17, 2003
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
030918-054CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Sep 17, 2003
Sampling point
ST060 Tank S060
Sample type
Routine
Lab sample
030918-046CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point ST060 Cyanide 1024 EPA method QC10204001X Not recorded
Collected
Sep 17, 2003
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
030918-005IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point TF103 Arsenic 1005 EPA method 200.8 Not recorded
0.016 mg/l , sample collected Sep 17, 2003, sampling point TF103 Barium 1010 EPA method 200.8 Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point TF103 Cadmium 1015 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point TF103 Chromium 1020 EPA method 200.8 Not recorded
1 mg/l , sample collected Sep 17, 2003, sampling point TF103 Fluoride 1025 EPA method 300.0 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point TF103 Mercury 1035 EPA method 200.8 Not recorded
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point TF103 Selenium 1045 EPA method 200.8 Not recorded
16.9 mg/l , sample collected Sep 17, 2003, sampling point TF103 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Not recorded
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Not recorded
Collected
Sep 17, 2003
Sampling point
ST060 Tank S060
Sample type
Routine
Lab sample
030918-004IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point ST060 Arsenic 1005 EPA method 200.8 Not recorded
0.004 mg/l , sample collected Sep 17, 2003, sampling point ST060 Barium 1010 EPA method 200.8 Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point ST060 Cadmium 1015 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point ST060 Chromium 1020 EPA method 200.8 Not recorded
1.46 mg/l , sample collected Sep 17, 2003, sampling point ST060 Fluoride 1025 EPA method 300.0 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point ST060 Mercury 1035 EPA method 200.8 Not recorded
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point ST060 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point ST060 Selenium 1045 EPA method 200.8 Not recorded
18.2 mg/l , sample collected Sep 17, 2003, sampling point ST060 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point ST060 Antimony, Total 1074 EPA method 200.8 Not recorded
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point ST060 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2003, sampling point ST060 Thallium, Total 1085 EPA method 200.8 Not recorded
Collected
May 23, 2002
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
020524-002VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 1,2,4-Trichlorobenzene 2378 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Cis-1,2-Dichloroethylene 2380 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Xylenes, Total 2955 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Dichloromethane 2964 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 O-Dichlorobenzene 2968 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 P-Dichlorobenzene 2969 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Vinyl Chloride 2976 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 1,1-Dichloroethylene 2977 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Trans-1,2-Dichloroethylene 2979 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 1,2-Dichloroethane 2980 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 1,1,1-Trichloroethane 2981 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Carbon Tetrachloride 2982 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 1,2-Dichloropropane 2983 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Trichloroethylene 2984 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 1,1,2-Trichloroethane 2985 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Tetrachloroethylene 2987 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Chlorobenzene 2989 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Benzene 2990 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Toluene 2991 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Ethylbenzene 2992 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 23, 2002, sampling point TF103 Styrene 2996 Not recorded
Collected
Apr 2, 2002
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
Not recorded
Laboratory
STL Billerica
Not detected below 0.197 mfl Minimum Reporting Level , sample collected Apr 2, 2002, sampling point DS000 Asbestos 1094 Not recorded
Collected
Dec 28, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
001229-001L
Laboratory
MSDH Lab
0.137 mg/l , sample collected Dec 28, 2000, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Dec 28, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
May 2, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000503-098L
Laboratory
MSDH Lab
0.077 mg/l , sample collected May 2, 2000, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected May 2, 2000, sampling point DS000 Lead 1030 Not recorded

Routine (10).