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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 1–10 of 191 samples, newest first — collected April 7, 2025 to February 3, 2026. The summary above covers all 191.

37 results from the 10 samples listed here: 8 detected, 29 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.

We withheld the location of 5 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 Benndale School, every result from 1 to 10 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
Feb 3, 2026 10:19
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-260204-002
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 3, 2026 10:19, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2026 – Dec 31, 2026
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 3, 2026 10:19, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2026 – Dec 31, 2026
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 3, 2026 10:19, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2026 – Dec 31, 2026
Collected
Dec 8, 2025 11:37
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
VO-251209-006
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 11:37, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Collected
Aug 12, 2025 08:39
Sampling point
LC0002 Location withheld
Sample type
Routine
Lab sample
PB-250813-005
Laboratory
MSDH Lab
0.0061 mg/l , sample collected Aug 12, 2025 08:39, sampling point LC0002 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 12, 2025 08:39, sampling point LC0002 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Aug 12, 2025 08:41
Sampling point
LC0001 Location withheld
Sample type
Routine
Lab sample
PB-250813-004
Laboratory
MSDH Lab
0.0059 mg/l , sample collected Aug 12, 2025 08:41, sampling point LC0001 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 12, 2025 08:41, sampling point LC0001 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Aug 12, 2025 08:46
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-250813-003
Laboratory
MSDH Lab
0.0055 mg/l , sample collected Aug 12, 2025 08:46, sampling point LC0003 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 12, 2025 08:46, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Aug 12, 2025 08:55
Sampling point
LC0004 Location withheld
Sample type
Routine
Lab sample
PB-250813-002
Laboratory
MSDH Lab
0.0054 mg/l , sample collected Aug 12, 2025 08:55, sampling point LC0004 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 12, 2025 08:55, sampling point LC0004 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Aug 12, 2025 09:11
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-250813-001
Laboratory
MSDH Lab
0.0056 mg/l , sample collected Aug 12, 2025 09:11, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 12, 2025 09:11, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Jun 17, 2025 09:16
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-250618-003
Laboratory
MSDH Lab
0.0466 mg/l , sample collected Jun 17, 2025 09:16, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Apr 7, 2025 08:42
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
HA-250408-027
Laboratory
MSDH Lab
10.8 ug/l , sample collected Apr 7, 2025 08:42, sampling point SMD Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Dec 31, 2025
Collected
Apr 7, 2025 08:51
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
TH-250408-027
Laboratory
MSDH Lab
3.02 ug/l , sample collected Apr 7, 2025 08:51, sampling point SMD TTHM 2950 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025

Routine (10).