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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 71–71 of 71 samples, newest first — collected September 12, 2018 to September 12, 2018. The summary above covers all 71.

1 result from the 1 sample listed here: 0 detected, 1 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 WTR & Sewer Dist #2, every result from 71 to 71 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
Sep 12, 2018 01:15
Sampling point
TF101 Treatment Facility TF101
Sample type
Routine
Lab sample
180913-001CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 12, 2018 01:15, sampling point TF101 Cyanide 1024 EPA method QC10204001X Not recorded

Routine (1).