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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

MS0490006 , North District 1 Water Assn.

21 of the 55 analytes this system has been tested for have been detected at least once, across 357 samples on record.

The other 34 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 357 samples on record, detections range from May 24, 2004 to June 23, 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 North District 1 Water Assn., 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 262 of 262 results Aug 6, 2008 Jul 2, 2025
Lead 1030 Inorganic Chemical 211 of 262 results Aug 6, 2008 Jul 2, 2025
TTHM 2950 Organic Chemical 12 of 19 results Jul 19, 2004 Nov 19, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 10 of 22 results Jun 16, 2010 Nov 5, 2024
Barium 1010 Inorganic Chemical 9 of 9 results Nov 15, 2004 Jun 23, 2026
Chloroform 2941 Organic Chemical 8 of 13 results Sep 28, 2020 Nov 19, 2025
Bromodichloromethane 2943 Organic Chemical 5 of 13 results Sep 28, 2020 Nov 19, 2025
Nickel 1036 Inorganic Chemical 5 of 8 results Nov 15, 2004 Mar 17, 2025
Dichloroacetic Acid 2451 Organic Chemical 5 of 16 results Sep 28, 2020 Nov 5, 2024
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 15, 2011 Jul 17, 2012
Sodium 1052 Inorganic Chemical 4 of 4 results Sep 16, 2019 Jun 23, 2026
Dibromochloromethane 2944 Organic Chemical 4 of 13 results Sep 28, 2020 Nov 5, 2024
Chromium 1020 Inorganic Chemical 4 of 9 results Apr 4, 2005 May 6, 2019
Bromoform 2942 Organic Chemical 3 of 13 results Sep 28, 2020 Nov 5, 2024
Dibromoacetic Acid 2454 Organic Chemical 3 of 16 results Sep 28, 2020 Aug 20, 2024
Trichloroacetic Acid 2452 Organic Chemical 3 of 16 results Aug 27, 2007 May 22, 2024
Fluoride 1025 Inorganic Chemical 1 of 9 results Jun 23, 2026 Jun 23, 2026
Monobromoacetic Acid 2453 Organic Chemical 1 of 16 results Aug 19, 2019 Aug 19, 2019
Cadmium 1015 Inorganic Chemical 1 of 9 results Apr 4, 2005 Apr 4, 2005
Selenium 1045 Inorganic Chemical 1 of 9 results Apr 4, 2005 Apr 4, 2005
Nitrite 1041 Inorganic Chemical 1 of 22 results May 24, 2004 May 24, 2004

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 357 samples, newest first — collected November 5, 2024 to July 2, 2025. The summary above covers all 357.

51 results from the 10 samples listed here: 20 detected, 31 not detected. Across the whole record it is 558 of 1,045. 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 6 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 North District 1 Water Assn., every result from 11 to 20 of 357 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 2, 2025 17:30
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-250708-004
Laboratory
MSDH Lab
0.0149 mg/l , sample collected Jul 2, 2025 17:30, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 2, 2025 17:30, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 2, 2025 18:00
Sampling point
LC0020 Location withheld
Sample type
Routine
Lab sample
PB-250708-003
Laboratory
MSDH Lab
0.0075 mg/l , sample collected Jul 2, 2025 18:00, sampling point LC0020 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 2, 2025 18:00, sampling point LC0020 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 2, 2025 17:00
Sampling point
LC0001 Location withheld
Sample type
Routine
Lab sample
PB-250708-002
Laboratory
MSDH Lab
0.113 mg/l , sample collected Jul 2, 2025 17:00, sampling point LC0001 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
1 ug/l , sample collected Jul 2, 2025 17:00, sampling point LC0001 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 2, 2025 22:00
Sampling point
LC0009 Location withheld
Sample type
Routine
Lab sample
PB-250708-001
Laboratory
MSDH Lab
0.138 mg/l , sample collected Jul 2, 2025 22:00, sampling point LC0009 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
1.6 ug/l , sample collected Jul 2, 2025 22:00, sampling point LC0009 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 17, 2025 13:15
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-153119-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jun 17, 2025 13:15, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 17, 2025 13:15, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 17, 2025 13:15, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 17, 2025 13:15, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 17, 2025 13:15, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jun 17, 2025 13:15, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Dec 31, 2025
Collected
Mar 24, 2025 14:30
Sampling point
TF080 Treatment PLT T080
Sample type
Routine
Lab sample
NI-250325-009
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 24, 2025 14:30, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 24, 2025 14:30, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 24, 2025 14:30, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Mar 17, 2025 12:00
Sampling point
TF080 Treatment PLT T080
Sample type
Routine
Lab sample
IN-250318-019
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 17, 2025 12:00, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0747 mg/l , sample collected Mar 17, 2025 12:00, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 17, 2025 12:00, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 17, 2025 12:00, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 17, 2025 12:00, sampling point TF080 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 Mar 17, 2025 12:00, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0005 mg/l , sample collected Mar 17, 2025 12:00, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 17, 2025 12:00, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 17, 2025 12:00, sampling point TF080 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 Mar 17, 2025 12:00, sampling point TF080 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 Mar 17, 2025 12:00, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 24, 2025 10:00
Sampling point
TF080 Treatment PLT T080
Sample type
Routine
Lab sample
NA-250225-004
Laboratory
MSDH Lab
5.21 mg/l , sample collected Feb 24, 2025 10:00, sampling point TF080 Sodium 1052 EPA method 200.7 Jan 1, 2023 – Dec 31, 2025
Collected
Nov 5, 2024 08:00
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-127120-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 5, 2024 08:00, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
4.6 ug/l , sample collected Nov 5, 2024 08:00, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 5, 2024 08:00, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 5, 2024 08:00, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 5, 2024 08:00, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
4.6 ug/l , sample collected Nov 5, 2024 08:00, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2024 – Dec 31, 2024
26 ug/l , sample collected Nov 5, 2024 08:00, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
1.5 ug/l , sample collected Nov 5, 2024 08:00, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
20 ug/l , sample collected Nov 5, 2024 08:00, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
11 ug/l , sample collected Nov 5, 2024 08:00, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
58.5 ug/l , sample collected Nov 5, 2024 08:00, sampling point SM2 TTHM 2950 EPA method 524.2 Oct 1, 2024 – Dec 31, 2024
Collected
Nov 5, 2024 07:45
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-127120-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 5, 2024 07:45, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
2.1 ug/l , sample collected Nov 5, 2024 07:45, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 5, 2024 07:45, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 5, 2024 07:45, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 5, 2024 07:45, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
2.1 ug/l , sample collected Nov 5, 2024 07:45, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2024 – Dec 31, 2024
1.9 ug/l , sample collected Nov 5, 2024 07:45, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 5, 2024 07:45, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 5, 2024 07:45, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 5, 2024 07:45, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
1.9 ug/l , sample collected Nov 5, 2024 07:45, sampling point SM1 TTHM 2950 EPA method 524.2 Oct 1, 2024 – Dec 31, 2024

Routine (10).