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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

MS0200017 , Benndale School

27 of the 52 analytes this system has been tested for have been detected at least once, across 191 samples on record.

The other 25 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 191 samples on record, detections range from September 10, 2003 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 Benndale School, 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 72 of 72 results Jan 7, 2004 Aug 12, 2025
Lead 1030 Inorganic Chemical 27 of 72 results Jan 7, 2004 Aug 12, 2024
Barium 1010 Inorganic Chemical 10 of 10 results Sep 10, 2003 Feb 5, 2025
Fluoride 1025 Inorganic Chemical 10 of 10 results Sep 10, 2003 Feb 5, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 9 of 11 results Aug 27, 2007 Apr 7, 2025
Xylenes, Total 2955 Organic Chemical 9 of 54 results Jun 2, 2009 Jun 10, 2019
TTHM 2950 Organic Chemical 6 of 10 results Aug 1, 2007 Apr 7, 2025
Chromium 1020 Inorganic Chemical 5 of 10 results Feb 4, 2004 Feb 5, 2025
Ethylbenzene 2992 Organic Chemical 4 of 54 results Jun 2, 2009 Jul 27, 2017
Dichloroacetic Acid 2451 Organic Chemical 3 of 5 results Aug 27, 2007 Sep 2, 2014
Nitrate-Nitrite 1038 Inorganic Chemical 2 of 23 results Jun 7, 2004 Feb 7, 2023
Nitrite 1041 Inorganic Chemical 2 of 23 results Jun 2, 2010 Feb 7, 2023
Nickel 1036 Inorganic Chemical 2 of 10 results Mar 31, 2008 Apr 16, 2014
Trichloroacetic Acid 2452 Organic Chemical 2 of 5 results Aug 27, 2007 Jul 19, 2012
Monobromoacetic Acid 2453 Organic Chemical 2 of 5 results Aug 27, 2007 Jul 19, 2012
Chloroform 2941 Organic Chemical 2 of 4 results Aug 1, 2007 Jul 19, 2012
Bromodichloromethane 2943 Organic Chemical 2 of 4 results Aug 1, 2007 Jul 19, 2012
Sulfate 1055 Inorganic Chemical 2 of 2 results Sep 10, 2003 Feb 4, 2004
Cyanide 1024 Inorganic Chemical 1 of 10 results Jun 17, 2025 Jun 17, 2025
Sodium 1052 Inorganic Chemical 1 of 1 result Feb 9, 2021 Feb 9, 2021
Toluene 2991 Organic Chemical 1 of 54 results Jun 10, 2019 Jun 10, 2019
Dibromoacetic Acid 2454 Organic Chemical 1 of 5 results Jul 19, 2012 Jul 19, 2012
Bromoform 2942 Organic Chemical 1 of 4 results Jul 19, 2012 Jul 19, 2012
Dibromochloromethane 2944 Organic Chemical 1 of 4 results Jul 19, 2012 Jul 19, 2012
Cadmium 1015 Inorganic Chemical 1 of 10 results Feb 28, 2005 Feb 28, 2005
Selenium 1045 Inorganic Chemical 1 of 10 results Feb 28, 2005 Feb 28, 2005
Nitrate 1040 Inorganic Chemical 1 of 23 results Jun 7, 2004 Jun 7, 2004

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 141–150 of 191 samples, newest first — collected July 27, 2006 to April 16, 2007. The summary above covers all 191.

78 results from the 10 samples listed here: 9 detected, 69 not detected. Across the whole record it is 180 of 1,533. 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 Benndale School, every result from 141 to 150 of 191 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 16, 2007
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
070417-203NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 16, 2007, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 16, 2007, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 16, 2007, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
Collected
Mar 19, 2007
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
070320-011VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 19, 2007, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2007 – Mar 31, 2007
Collected
Oct 19, 2006
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
061020-008VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Benzene 2990 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Toluene 2991 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 19, 2006, sampling point TF101 Styrene 2996 EPA method 524.2 Oct 1, 2006 – Dec 31, 2006
Collected
Aug 23, 2006
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
060824-003VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Benzene 2990 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Toluene 2991 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Aug 23, 2006, sampling point TF101 Styrene 2996 EPA method 524.2 Jul 1, 2006 – Sep 30, 2006
Collected
Jul 27, 2006
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
060728-057PB
Laboratory
MSDH Lab
0.0047 mg/l , sample collected Jul 27, 2006, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006
0.0006 mg/l , sample collected Jul 27, 2006, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006
Collected
Jul 27, 2006
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
060728-059PB
Laboratory
MSDH Lab
0.0151 mg/l , sample collected Jul 27, 2006, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006
0.0007 mg/l , sample collected Jul 27, 2006, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006
Collected
Jul 27, 2006
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
060728-060PB
Laboratory
MSDH Lab
0.0129 mg/l , sample collected Jul 27, 2006, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 27, 2006, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006
Collected
Jul 27, 2006
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
060728-058PB
Laboratory
MSDH Lab
0.0293 mg/l , sample collected Jul 27, 2006, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006
0.0018 mg/l , sample collected Jul 27, 2006, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006
Collected
Jul 27, 2006
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
060728-061PB
Laboratory
MSDH Lab
0.0033 mg/l , sample collected Jul 27, 2006, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 27, 2006, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006
Collected
Jul 27, 2006
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
060728-056PB
Laboratory
MSDH Lab
0.0122 mg/l , sample collected Jul 27, 2006, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 27, 2006, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2006

Routine (10).