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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

MS0290002 , Dorsey Water Association

11 of the 14 analytes this system has been tested for have been detected at least once, across 397 samples on record.

The other 3 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 397 samples on record, detections range from July 19, 1993 to November 3, 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 Dorsey Water Association, 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 151 of 200 results Jul 19, 1993 Sep 23, 2025
TTHM 2950 Organic Chemical 100 of 100 results Jun 7, 2004 Nov 3, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 97 of 97 results Aug 16, 2004 Nov 3, 2025
Chloroform 2941 Organic Chemical 70 of 70 results May 15, 2006 Nov 3, 2025
Bromodichloromethane 2943 Organic Chemical 70 of 70 results May 15, 2006 Nov 3, 2025
Trichloroacetic Acid 2452 Organic Chemical 65 of 65 results Oct 22, 2007 Nov 3, 2025
Dichloroacetic Acid 2451 Organic Chemical 64 of 65 results Oct 22, 2007 Nov 3, 2025
Monochloroacetic Acid 2450 Organic Chemical 37 of 65 results Jan 22, 2008 Jun 16, 2020
Lead 1030 Inorganic Chemical 29 of 200 results Jul 19, 1993 Jun 24, 2020
Dibromochloromethane 2944 Organic Chemical 21 of 70 results Aug 7, 2006 Nov 3, 2025
Monobromoacetic Acid 2453 Organic Chemical 9 of 65 results May 10, 2011 Jun 16, 2020

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.

Show every sample on record

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The most recent samples, result by result

The table below lists 1–10 of 15 samples, newest first — collected September 22, 2025 to November 3, 2025. The summary above covers all 15.

29 results from the 10 samples listed here: 16 detected, 13 not detected. Across the whole record it is 713 of 1,203. 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 9 sampling points 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 Dorsey Water Association, every result from 1 to 10 of 15 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
Nov 3, 2025 14:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
810-170479-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 3, 2025 14:30, sampling point DS000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
13 ug/l , sample collected Nov 3, 2025 14:30, sampling point DS000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
6.9 ug/l , sample collected Nov 3, 2025 14:30, sampling point DS000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 3, 2025 14:30, sampling point DS000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 3, 2025 14:30, sampling point DS000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
19.9 ug/l , sample collected Nov 3, 2025 14:30, sampling point DS000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
33 ug/l , sample collected Nov 3, 2025 14:30, sampling point DS000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 3, 2025 14:30, sampling point DS000 Bromoform 2942 EPA method 524.2 Not recorded
6 ug/l , sample collected Nov 3, 2025 14:30, sampling point DS000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
0.91 ug/l , sample collected Nov 3, 2025 14:30, sampling point DS000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
39.91 ug/l , sample collected Nov 3, 2025 14:30, sampling point DS000 TTHM 2950 EPA method 524.2 Not recorded
Collected
Sep 23, 2025 05:00
Sampling point
LC0004 Location withheld
Sample type
Routine
Lab sample
PB-250925-035
Laboratory
MSDH Lab
0.0082 mg/l , sample collected Sep 23, 2025 05:00, sampling point LC0004 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 23, 2025 05:00, sampling point LC0004 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Sep 22, 2025 09:00
Sampling point
LC0024 Location withheld
Sample type
Routine
Lab sample
PB-250925-034
Laboratory
MSDH Lab
0.0136 mg/l , sample collected Sep 22, 2025 09:00, sampling point LC0024 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 22, 2025 09:00, sampling point LC0024 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Sep 22, 2025 06:00
Sampling point
LC0013 Location withheld
Sample type
Routine
Lab sample
PB-250925-033
Laboratory
MSDH Lab
0.0191 mg/l , sample collected Sep 22, 2025 06:00, sampling point LC0013 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 22, 2025 06:00, sampling point LC0013 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Sep 22, 2025 05:30
Sampling point
LC0025 Location withheld
Sample type
Routine
Lab sample
PB-250925-032
Laboratory
MSDH Lab
0.0036 mg/l , sample collected Sep 22, 2025 05:30, sampling point LC0025 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 22, 2025 05:30, sampling point LC0025 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Sep 22, 2025 09:15
Sampling point
LC0011 Location withheld
Sample type
Routine
Lab sample
PB-250925-031
Laboratory
MSDH Lab
0.0132 mg/l , sample collected Sep 22, 2025 09:15, sampling point LC0011 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 22, 2025 09:15, sampling point LC0011 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Sep 22, 2025 11:00
Sampling point
LC0006 Location withheld
Sample type
Routine
Lab sample
PB-250925-030
Laboratory
MSDH Lab
0.0111 mg/l , sample collected Sep 22, 2025 11:00, sampling point LC0006 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 22, 2025 11:00, sampling point LC0006 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Sep 22, 2025 07:45
Sampling point
LC0022 Location withheld
Sample type
Routine
Lab sample
PB-250925-029
Laboratory
MSDH Lab
0.0157 mg/l , sample collected Sep 22, 2025 07:45, sampling point LC0022 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 22, 2025 07:45, sampling point LC0022 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Sep 22, 2025 11:00
Sampling point
LC0007 Location withheld
Sample type
Routine
Lab sample
PB-250925-028
Laboratory
MSDH Lab
0.0116 mg/l , sample collected Sep 22, 2025 11:00, sampling point LC0007 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 22, 2025 11:00, sampling point LC0007 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Sep 22, 2025 09:30
Sampling point
LC0010 Location withheld
Sample type
Routine
Lab sample
PB-250925-027
Laboratory
MSDH Lab
0.002 mg/l , sample collected Sep 22, 2025 09:30, sampling point LC0010 Copper, Free 1022 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 22, 2025 09:30, sampling point LC0010 Lead 1030 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025

Routine (10).