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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

MS0620001 , C & C W/A

30 of the 57 analytes this system has been tested for have been detected at least once, across 450 samples on record.

The other 27 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 450 samples on record, detections range from October 22, 2003 to October 21, 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 C & C W/A, 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
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 74 of 75 results Nov 17, 2005 Oct 21, 2025
TTHM 2950 Organic Chemical 74 of 75 results Nov 17, 2005 Oct 21, 2025
Copper, Free 1022 Inorganic Chemical 57 of 57 results Aug 16, 2007 Jul 24, 2023
Chloroform 2941 Organic Chemical 41 of 41 results Oct 9, 2006 Oct 21, 2025
Bromodichloromethane 2943 Organic Chemical 41 of 41 results Oct 9, 2006 Oct 21, 2025
Lead 1030 Inorganic Chemical 38 of 57 results Aug 16, 2007 Jul 24, 2023
Dichloroacetic Acid 2451 Organic Chemical 36 of 36 results Feb 27, 2008 Oct 21, 2025
Trichloroacetic Acid 2452 Organic Chemical 36 of 36 results Feb 27, 2008 Oct 21, 2025
Barium 1010 Inorganic Chemical 33 of 33 results Oct 22, 2003 Mar 24, 2025
Fluoride 1025 Inorganic Chemical 33 of 33 results Oct 22, 2003 Mar 24, 2025
Chromium 1020 Inorganic Chemical 21 of 33 results Oct 22, 2003 Jan 9, 2024
Dibromochloromethane 2944 Organic Chemical 15 of 41 results Nov 3, 2008 Sep 1, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 15 results Mar 12, 2012 Oct 3, 2012
Dibromoacetic Acid 2454 Organic Chemical 12 of 36 results Nov 3, 2008 Sep 1, 2020
Bromoform 2942 Organic Chemical 11 of 41 results Nov 3, 2008 Sep 1, 2020
Monochloroacetic Acid 2450 Organic Chemical 9 of 36 results May 11, 2009 Feb 24, 2020
Nickel 1036 Inorganic Chemical 6 of 33 results Dec 3, 2007 Mar 31, 2014
Selenium 1045 Inorganic Chemical 5 of 33 results Mar 24, 2004 Feb 1, 2010
Nitrite 1041 Inorganic Chemical 5 of 67 results Jun 9, 2004 Oct 3, 2005
Arsenic 1005 Inorganic Chemical 4 of 33 results Nov 3, 2008 Oct 17, 2022
Monobromoacetic Acid 2453 Organic Chemical 4 of 36 results Nov 27, 2017 Feb 24, 2020
Sodium 1052 Inorganic Chemical 3 of 3 results Nov 6, 2023 Nov 6, 2023
Nitrate-Nitrite 1038 Inorganic Chemical 2 of 67 results Jun 9, 2004 Jun 9, 2004
Nitrate 1040 Inorganic Chemical 2 of 67 results Jun 9, 2004 Jun 9, 2004
Xylenes, Total 2955 Organic Chemical 1 of 72 results Oct 3, 2012 Oct 3, 2012
Carbon Tetrachloride 2982 Organic Chemical 1 of 72 results Oct 3, 2012 Oct 3, 2012
Ethylbenzene 2992 Organic Chemical 1 of 72 results Oct 3, 2012 Oct 3, 2012
Toluene 2991 Organic Chemical 1 of 72 results Sep 13, 2004 Sep 13, 2004
Dichloromethane 2964 Organic Chemical 1 of 72 results Sep 2, 2004 Sep 2, 2004
Sulfate 1055 Inorganic Chemical 1 of 4 results Oct 22, 2003 Oct 22, 2003

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 51–60 of 450 samples, newest first — collected November 28, 2022 to April 17, 2023. The summary above covers all 450.

50 results from the 10 samples listed here: 8 detected, 42 not detected. Across the whole record it is 583 of 2,803. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

We withheld the location of 2 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for C & C W/A, every result from 51 to 60 of 450 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
Apr 17, 2023 14:33
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
TH-230418-028
Laboratory
MSDH Lab
49.8 ug/l , sample collected Apr 17, 2023 14:33, sampling point SMT TTHM 2950 EPA method 524.2 Apr 1, 2023 – Jun 30, 2023
Collected
Apr 17, 2023 13:42
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
TH-230418-027
Laboratory
MSDH Lab
38 ug/l , sample collected Apr 17, 2023 13:42, sampling point SMH TTHM 2950 EPA method 524.2 Apr 1, 2023 – Jun 30, 2023
Collected
Apr 17, 2023 14:33
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
HA-230418-028
Laboratory
MSDH Lab
29 ug/l , sample collected Apr 17, 2023 14:33, sampling point SMT Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2023 – Jun 30, 2023
Collected
Apr 17, 2023 13:42
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
HA-230418-027
Laboratory
MSDH Lab
15.4 ug/l , sample collected Apr 17, 2023 13:42, sampling point SMH Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2023 – Jun 30, 2023
Collected
Feb 21, 2023 13:11
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
TH-230222-018
Laboratory
MSDH Lab
41.7 ug/l , sample collected Feb 21, 2023 13:11, sampling point SMT TTHM 2950 EPA method 524.2 Jan 1, 2023 – Mar 31, 2023
Collected
Feb 21, 2023 12:31
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
TH-230222-017
Laboratory
MSDH Lab
36.2 ug/l , sample collected Feb 21, 2023 12:31, sampling point SMH TTHM 2950 EPA method 524.2 Jan 1, 2023 – Mar 31, 2023
Collected
Feb 21, 2023 13:11
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
HA-230222-018
Laboratory
MSDH Lab
15.5 ug/l , sample collected Feb 21, 2023 13:11, sampling point SMT Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2023 – Mar 31, 2023
Collected
Feb 21, 2023 12:31
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
HA-230222-017
Laboratory
MSDH Lab
13.6 ug/l , sample collected Feb 21, 2023 12:31, sampling point SMH Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2023 – Mar 31, 2023
Collected
Nov 28, 2022 14:08
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
VO-221129-033
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 14:08, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Nov 28, 2022 13:33
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
VO-221129-034
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Dichloromethane 2964 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Benzene 2990 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Toluene 2991 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 13:33, sampling point TF104 Styrene 2996 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022

Routine (10).