Chemical and radiological sample results

MS0240263 , West Harrison High School

32 of the 65 analytes this system has been tested for have been detected at least once, across 203 samples on record.

The other 33 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 203 samples on record, detections range from September 8, 2009 to April 23, 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 West Harrison High 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	104 of 104 results	Oct 29, 2009	Aug 14, 2024
Lead 1030	Inorganic Chemical	42 of 104 results	Oct 29, 2009	Jul 21, 2021
Xylenes, Total 2955	Organic Chemical	23 of 48 results	Oct 28, 2009	May 13, 2021
Total Haloacetic Acids (Haa5) 2456	Organic Chemical	9 of 9 results	Sep 8, 2009	Apr 23, 2025
TTHM 2950	Organic Chemical	9 of 9 results	Sep 8, 2009	Apr 23, 2025
Fluoride 1025	Inorganic Chemical	8 of 8 results	Apr 19, 2011	Feb 15, 2024
Barium 1010	Inorganic Chemical	7 of 7 results	Apr 19, 2011	Feb 15, 2024
Ethylbenzene 2992	Organic Chemical	7 of 48 results	Oct 28, 2009	Jul 24, 2017
Dichloroacetic Acid 2451	Organic Chemical	5 of 5 results	Sep 8, 2009	Jul 24, 2017
Chloroform 2941	Organic Chemical	5 of 5 results	Sep 8, 2009	Jul 24, 2017
Bromodichloromethane 2943	Organic Chemical	5 of 5 results	Sep 8, 2009	Jul 24, 2017
Dibromochloromethane 2944	Organic Chemical	5 of 5 results	Sep 8, 2009	Jul 24, 2017
Trichloroacetic Acid 2452	Organic Chemical	4 of 5 results	Sep 8, 2009	Jul 24, 2017
Chromium 1020	Inorganic Chemical	3 of 7 results	Apr 19, 2011	Mar 25, 2020
Sodium 1052	Inorganic Chemical	2 of 2 results	Aug 26, 2015	Feb 24, 2021
Monochloroacetic Acid 2450	Organic Chemical	1 of 5 results	Jul 24, 2017	Jul 24, 2017
Calcium 1016	Inorganic Chemical	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Chloride 1017	Inorganic Chemical	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Magnesium 1031	Inorganic Chemical	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Manganese 1032	Inorganic Chemical	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Potassium 1042	Inorganic Chemical	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Sulfate 1055	Inorganic Chemical	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Residue, Total, Filterable 1057	Water Quality	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Alkalinity, Caco3 Stability 1067	Water Quality	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Color 1905	Water Quality	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Hardness, Total (As Caco3) 1915	Water Quality	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Alkalinity, Total 1927	Water Quality	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Calculated Sodium NACA	Water Quality	1 of 1 result	Aug 26, 2015	Aug 26, 2015
PH, Field Result PHFD	Water Quality	1 of 1 result	Aug 26, 2015	Aug 26, 2015
Nickel 1036	Inorganic Chemical	1 of 7 results	Dec 1, 2014	Dec 1, 2014
Monobromoacetic Acid 2453	Organic Chemical	1 of 5 results	Aug 10, 2010	Aug 10, 2010
Bromoform 2942	Organic Chemical	1 of 5 results	Sep 8, 2009	Sep 8, 2009

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.

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The most recent samples, result by result

The 4 samples collected between September 25, 2024 and September 25, 2026 are listed below, newest first.

26 results from the 4 samples listed here: 2 detected, 24 not detected. 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 West Harrison High School, every result from the 4 samples on record, 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 23, 2025 12:32 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample HA-250424-019 Laboratory MSDH Lab
24.8 ug/l , sample collected Apr 23, 2025 12:32, sampling point MRT000	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Jan 1, 2025 – Dec 31, 2025
Collected Apr 23, 2025 12:28 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample TH-250424-019 Laboratory MSDH Lab
13.5 ug/l , sample collected Apr 23, 2025 12:28, sampling point MRT000	TTHM 2950 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Collected Feb 12, 2025 15:00 Sampling point TF101 Sample type Routine Lab sample VO-250213-005 Laboratory MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, 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 Feb 12, 2025 15:00, sampling point TF101	Styrene 2996 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Collected Feb 12, 2025 15:00 Sampling point TF101 Sample type Routine Lab sample NI-250213-021 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 15:00, sampling point TF101	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 15:00, sampling point TF101	Nitrate 1040 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 15:00, sampling point TF101	Nitrite 1041 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025

Collected
Apr 23, 2025 12:32

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
HA-250424-019

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  24.8 ug/l
Collected
Apr 23, 2025 12:28

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
TH-250424-019

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- TTHM 2950 EPA method 524.2
  
  Result
  13.5 ug/l
Collected
Feb 12, 2025 15:00

Sampling point
TF101

Sample type
Routine

Lab sample
VO-250213-005

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
Feb 12, 2025 15:00

Sampling point
TF101

Sample type
Routine

Lab sample
NI-250213-021

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- 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

Routine (4).