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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

MS0240279 , West Harrison WTR & Sewer Dist #2

13 of the 50 analytes this system has been tested for have been detected at least once, across 71 samples on record.

The other 37 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 71 samples on record, detections range from October 29, 2019 to July 30, 2026. 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 WTR & Sewer Dist #2, 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 45 of 45 results Oct 29, 2019 Jul 30, 2026
Lead 1030 Inorganic Chemical 35 of 45 results Oct 29, 2019 Jul 30, 2026
Barium 1010 Inorganic Chemical 6 of 6 results Mar 25, 2020 Jul 6, 2026
Fluoride 1025 Inorganic Chemical 6 of 6 results Mar 25, 2020 Jul 6, 2026
Arsenic 1005 Inorganic Chemical 4 of 6 results Mar 25, 2020 Feb 10, 2025
Xylenes, Total 2955 Organic Chemical 2 of 3 results Mar 25, 2024 Jun 23, 2026
Ethylbenzene 2992 Organic Chemical 2 of 3 results Mar 25, 2024 Jun 23, 2026
Trichloroacetic Acid 2452 Organic Chemical 1 of 1 result Jun 23, 2026 Jun 23, 2026
Chloroform 2941 Organic Chemical 1 of 1 result Jun 23, 2026 Jun 23, 2026
TTHM 2950 Organic Chemical 1 of 2 results Jun 23, 2026 Jun 23, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 1 of 2 results Mar 25, 2025 Mar 25, 2025
Sodium 1052 Inorganic Chemical 1 of 1 result Feb 16, 2021 Feb 16, 2021
Chromium 1020 Inorganic Chemical 1 of 6 results Mar 25, 2020 Mar 25, 2020

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 11–20 of 71 samples, newest first — collected August 20, 2024 to August 12, 2025. The summary above covers all 71.

27 results from the 10 samples listed here: 12 detected, 15 not detected. Across the whole record it is 106 of 259. 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 1 sampling point 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 West Harrison WTR & Sewer Dist #2, every result from 11 to 20 of 71 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 12, 2025 07:00
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
PB-250813-008
Laboratory
MSDH Lab
0.0077 mg/l , sample collected Aug 12, 2025 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Not recorded
0.9 ug/l , sample collected Aug 12, 2025 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Not recorded
Collected
Aug 12, 2025 07:00
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
PB-250813-007
Laboratory
MSDH Lab
0.0048 mg/l , sample collected Aug 12, 2025 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 12, 2025 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Not recorded
Collected
Aug 12, 2025 07:00
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
PB-250813-006
Laboratory
MSDH Lab
0.0078 mg/l , sample collected Aug 12, 2025 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 12, 2025 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Not recorded
Collected
Apr 29, 2025 11:45
Sampling point
TF101 Treatment Facility TF101
Sample type
Routine
Lab sample
CN-250430-018
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 29, 2025 11:45, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Mar 25, 2025 09:50
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
HA-250326-006
Laboratory
MSDH Lab
1.87 ug/l , sample collected Mar 25, 2025 09:50, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Dec 31, 2025
Collected
Mar 25, 2025 09:45
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
TH-250326-005
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 25, 2025 09:45, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Collected
Feb 10, 2025 08:30
Sampling point
TF101 Treatment Facility TF101
Sample type
Routine
Lab sample
IN-250211-056
Laboratory
MSDH Lab
0.0005 mg/l , sample collected Feb 10, 2025 08:30, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0902 mg/l , sample collected Feb 10, 2025 08:30, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 08:30, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 08:30, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.139 mg/l , sample collected Feb 10, 2025 08:30, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 08:30, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 08:30, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 08:30, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 08:30, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 08:30, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 08:30, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 10, 2025 12:30
Sampling point
TF101 Treatment Facility TF101
Sample type
Routine
Lab sample
NI-250211-001
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 12:30, 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 10, 2025 12:30, 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 10, 2025 12:30, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Aug 20, 2024 06:00
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
PB-240821-111
Laboratory
MSDH Lab
0.0626 mg/l , sample collected Aug 20, 2024 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2024 – Dec 31, 2024
6.2 ug/l , sample collected Aug 20, 2024 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2024 – Dec 31, 2024
Collected
Aug 20, 2024 06:00
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
PB-240821-112
Laboratory
MSDH Lab
0.305 mg/l , sample collected Aug 20, 2024 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2024 – Dec 31, 2024
2.8 ug/l , sample collected Aug 20, 2024 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2024 – Dec 31, 2024

Routine (10).