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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

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.

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

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 61–70 of 203 samples, newest first — collected October 24, 2017 to July 18, 2018. The summary above covers all 203.

78 results from the 10 samples listed here: 9 detected, 69 not detected. Across the whole record it is 255 of 1,431. 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 61 to 70 of 203 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
Jul 18, 2018 07:45
Sampling point
DS000
Sample type
Routine
Lab sample
180719-184PB
Laboratory
MSDH Lab
0.6915 mg/l , sample collected Jul 18, 2018 07:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0029 mg/l , sample collected Jul 18, 2018 07:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Jul 18, 2018 07:48
Sampling point
DS000
Sample type
Routine
Lab sample
180719-183PB
Laboratory
MSDH Lab
0.0375 mg/l , sample collected Jul 18, 2018 07:48, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 18, 2018 07:48, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Jul 18, 2018 07:47
Sampling point
DS000
Sample type
Routine
Lab sample
180719-182PB
Laboratory
MSDH Lab
0.2411 mg/l , sample collected Jul 18, 2018 07:47, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0009 mg/l , sample collected Jul 18, 2018 07:47, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Jul 18, 2018 07:50
Sampling point
DS000
Sample type
Routine
Lab sample
180719-181PB
Laboratory
MSDH Lab
0.2355 mg/l , sample collected Jul 18, 2018 07:50, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0005 mg/l , sample collected Jul 18, 2018 07:50, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Jul 18, 2018 08:03
Sampling point
DS000
Sample type
Routine
Lab sample
180719-110PB
Laboratory
MSDH Lab
0.0666 mg/l , sample collected Jul 18, 2018 08:03, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 18, 2018 08:03, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Jul 18, 2018 08:00
Sampling point
DS000
Sample type
Routine
Lab sample
180719-109PB
Laboratory
MSDH Lab
0.2007 mg/l , sample collected Jul 18, 2018 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 18, 2018 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Apr 26, 2018 12:45
Sampling point
TF101
Sample type
Routine
Lab sample
180427-002VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Benzene 2990 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Toluene 2991 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2018 12:45, sampling point TF101 Styrene 2996 EPA method 524.2 Apr 1, 2018 – Jun 30, 2018
Collected
Feb 21, 2018 13:45
Sampling point
TF101
Sample type
Routine
Lab sample
180222-058NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 21, 2018 13:45, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 21, 2018 13:45, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 21, 2018 13:45, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Jan 30, 2018 12:00
Sampling point
TF101
Sample type
Routine
Lab sample
180131-003VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 30, 2018 12:00, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2018 – Mar 31, 2018
Collected
Oct 24, 2017 12:00
Sampling point
TF101
Sample type
Routine
Lab sample
171025-011VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Benzene 2990 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Toluene 2991 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2017 12:00, sampling point TF101 Styrene 2996 EPA method 524.2 Oct 1, 2017 – Dec 31, 2017

Routine (10).