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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 131–140 of 203 samples, newest first — collected June 2, 2011 to August 24, 2011. The summary above covers all 203.

46 results from the 10 samples listed here: 20 detected, 26 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 131 to 140 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
Aug 24, 2011 02:30
Sampling point
TF101
Sample type
Routine
Lab sample
110825-010VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
4.54 ug/l , sample collected Aug 24, 2011 02:30, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 Benzene 2990 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 Toluene 2991 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
1.18 ug/l , sample collected Aug 24, 2011 02:30, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 24, 2011 02:30, sampling point TF101 Styrene 2996 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Collected
Jul 20, 2011 03:00
Sampling point
DS000
Sample type
Routine
Lab sample
110721-007HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jul 20, 2011 03:00, sampling point DS000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Jul 20, 2011 03:00, sampling point DS000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.001 mg/l , sample collected Jul 20, 2011 03:00, sampling point DS000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 20, 2011 03:00, sampling point DS000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 20, 2011 03:00, sampling point DS000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.003 mg/l , sample collected Jul 20, 2011 03:00, sampling point DS000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2011 – Dec 31, 2011
Collected
Jul 20, 2011 03:00
Sampling point
DS000
Sample type
Routine
Lab sample
110721-007TH
Laboratory
MSDH Lab
2.8 ug/l , sample collected Jul 20, 2011 03:00, sampling point DS000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 20, 2011 03:00, sampling point DS000 Bromoform 2942 EPA method 524.2 Not recorded
2.39 ug/l , sample collected Jul 20, 2011 03:00, sampling point DS000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
2.3 ug/l , sample collected Jul 20, 2011 03:00, sampling point DS000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
7.5 ug/l , sample collected Jul 20, 2011 03:00, sampling point DS000 TTHM 2950 EPA method 524.2 Jan 1, 2011 – Dec 31, 2011
Collected
Jun 2, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
110603-024PB
Laboratory
MSDH Lab
0.0013 mg/l , sample collected Jun 2, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 2, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
Collected
Jun 2, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
110603-040PB
Laboratory
MSDH Lab
0.0082 mg/l , sample collected Jun 2, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
0.0006 mg/l , sample collected Jun 2, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
Collected
Jun 2, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
110603-039PB
Laboratory
MSDH Lab
0.0034 mg/l , sample collected Jun 2, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
0.0005 mg/l , sample collected Jun 2, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
Collected
Jun 2, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
110603-038PB
Laboratory
MSDH Lab
0.0066 mg/l , sample collected Jun 2, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
0.0006 mg/l , sample collected Jun 2, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
Collected
Jun 2, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
110603-037PB
Laboratory
MSDH Lab
0.0019 mg/l , sample collected Jun 2, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 2, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
Collected
Jun 2, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
110603-036PB
Laboratory
MSDH Lab
0.0025 mg/l , sample collected Jun 2, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 2, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
Collected
Jun 2, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
110603-035PB
Laboratory
MSDH Lab
0.005 mg/l , sample collected Jun 2, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011
0.0017 mg/l , sample collected Jun 2, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2011

Routine (10).