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; the list of samples further down is narrowed.

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

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

Choose a date range

The most recent samples, result by result

The table below lists 1–10 of 12 samples, newest first — collected April 7, 2025 to February 3, 2026. The summary above covers all 12.

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 12 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

Collected
Feb 3, 2026 10:19

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
NI-260204-002

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2026 – Dec 31, 2026
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Dec 8, 2025 11:37

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
VO-251209-006

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- 1,2,4-Trichlorobenzene 2378 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Cis-1,2-Dichloroethylene 2380 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Xylenes, Total 2955 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Dichloromethane 2964 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- O-Dichlorobenzene 2968 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- P-Dichlorobenzene 2969 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Vinyl Chloride 2976 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1-Dichloroethylene 2977 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trans-1,2-Dichloroethylene 2979 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloroethane 2980 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,1-Trichloroethane 2981 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Carbon Tetrachloride 2982 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloropropane 2983 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trichloroethylene 2984 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,2-Trichloroethane 2985 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Tetrachloroethylene 2987 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Chlorobenzene 2989 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Benzene 2990 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Toluene 2991 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Ethylbenzene 2992 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Styrene 2996 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Aug 12, 2025 08:39

Sampling point
LC0002 Location withheld

Sample type
Routine

Lab sample
PB-250813-005

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0061 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Aug 12, 2025 08:41

Sampling point
LC0001 Location withheld

Sample type
Routine

Lab sample
PB-250813-004

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0059 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Aug 12, 2025 08:46

Sampling point
LC0003 Location withheld

Sample type
Routine

Lab sample
PB-250813-003

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0055 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Aug 12, 2025 08:55

Sampling point
LC0004 Location withheld

Sample type
Routine

Lab sample
PB-250813-002

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0054 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Aug 12, 2025 09:11

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
PB-250813-001

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0056 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Jun 17, 2025 09:16

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
CN-250618-003

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2025
- Cyanide 1024 EPA method QC10204001X
  
  Result
  0.0466 mg/l
Collected
Apr 7, 2025 08:42

Sampling point
SMD Location withheld

Sample type
Routine

Lab sample
HA-250408-027

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  10.8 ug/l
Collected
Apr 7, 2025 08:51

Sampling point
SMD Location withheld

Sample type
Routine

Lab sample
TH-250408-027

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- TTHM 2950 EPA method 524.2
  
  Result
  3.02 ug/l

Routine (10).