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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

MS0040005 , McAdams Water Association

36 of the 73 analytes this system has been tested for have been detected at least once, across 251 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 251 samples on record, detections range from August 16, 1993 to December 17, 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 McAdams 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 71 of 129 results Aug 16, 1993 Sep 23, 2025
Lead 1030 Inorganic Chemical 58 of 129 results Aug 17, 1993 Sep 23, 2025
TTHM 2950 Organic Chemical 18 of 23 results May 3, 2004 Dec 17, 2025
Chloroform 2941 Organic Chemical 12 of 17 results Jun 28, 2007 Dec 17, 2025
Barium 1010 Inorganic Chemical 12 of 12 results Jan 29, 2002 Feb 26, 2025
Bromodichloromethane 2943 Organic Chemical 10 of 17 results Jun 28, 2007 Dec 17, 2025
Nickel 1036 Inorganic Chemical 9 of 12 results Jan 12, 2004 Feb 26, 2025
Dibromochloromethane 2944 Organic Chemical 8 of 17 results Jun 28, 2007 Sep 25, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 6 of 23 results Jun 28, 2007 Mar 12, 2024
Sodium 1052 Inorganic Chemical 5 of 5 results Sep 16, 2008 Oct 30, 2024
Chromium 1020 Inorganic Chemical 5 of 12 results Jan 29, 2002 Nov 6, 2018
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 13, 2011 Jul 10, 2012
Dichloroacetic Acid 2451 Organic Chemical 4 of 16 results Jul 15, 2008 Sep 25, 2025
Selenium 1045 Inorganic Chemical 3 of 12 results Jan 25, 2005 Mar 19, 2008
Calcium 1016 Inorganic Chemical 2 of 2 results Sep 16, 2008 Sep 16, 2008
Iron 1028 Inorganic Chemical 2 of 2 results Sep 16, 2008 Sep 16, 2008
Magnesium 1031 Inorganic Chemical 2 of 2 results Sep 16, 2008 Sep 16, 2008
Manganese 1032 Inorganic Chemical 2 of 2 results Sep 16, 2008 Sep 16, 2008
Potassium 1042 Inorganic Chemical 2 of 2 results Sep 16, 2008 Sep 16, 2008
Residue, Total, Filterable 1057 Water Quality 2 of 2 results Sep 16, 2008 Sep 16, 2008
Alkalinity, Caco3 Stability 1067 Water Quality 2 of 2 results Sep 16, 2008 Sep 16, 2008
Carbon Dioxide 1901 Water Quality 2 of 2 results Sep 16, 2008 Sep 16, 2008
Color 1905 Water Quality 2 of 2 results Sep 16, 2008 Sep 16, 2008
Hardness, Total (As Caco3) 1915 Water Quality 2 of 2 results Sep 16, 2008 Sep 16, 2008
PH 1925 Water Quality 2 of 2 results Sep 16, 2008 Sep 16, 2008
Alkalinity, Total 1927 Water Quality 2 of 2 results Sep 16, 2008 Sep 16, 2008
Iron, Field Result FEFD Inorganic Chemical 2 of 2 results Sep 16, 2008 Sep 16, 2008
Calculated Sodium NACA Water Quality 2 of 2 results Sep 16, 2008 Sep 16, 2008
PH, Field Result PHFD Water Quality 2 of 2 results Sep 16, 2008 Sep 16, 2008
Fluoride 1025 Inorganic Chemical 2 of 12 results Jan 25, 2005 Mar 19, 2008
Cadmium 1015 Inorganic Chemical 2 of 12 results Jan 25, 2005 Jan 23, 2006
Sulfate 1055 Inorganic Chemical 2 of 2 results Jan 29, 2002 Jan 12, 2004
Xylenes, Total 2955 Organic Chemical 1 of 27 results Sep 26, 2011 Sep 26, 2011
Temperature, Field Result TEMP Water Quality 1 of 1 result Sep 16, 2008 Sep 16, 2008
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 22 results Jul 27, 2005 Jul 27, 2005
Nitrate 1040 Inorganic Chemical 1 of 22 results Jul 27, 2005 Jul 27, 2005

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

Choose a date range

The most recent samples, result by result

The table below lists 1–10 of 25 samples, newest first — collected September 23, 2025 to December 17, 2025. The summary above covers all 25.

56 results from the 10 samples listed here: 25 detected, 31 not detected. Across the whole record it is 266 of 1,289. 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 8 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 McAdams Water Association, every result from 1 to 10 of 25 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
Dec 17, 2025 12:10
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-176303-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:10, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:10, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:10, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:10, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:10, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:10, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
0.6 ug/l , sample collected Dec 17, 2025 12:10, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:10, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
0.55 ug/l , sample collected Dec 17, 2025 12:10, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:10, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
1.15 ug/l , sample collected Dec 17, 2025 12:10, sampling point SM2 TTHM 2950 EPA method 524.2 Not recorded
Collected
Dec 17, 2025 12:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-176303-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:00, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:00, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:00, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:00, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:00, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:00, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
0.62 ug/l , sample collected Dec 17, 2025 12:00, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:00, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
0.52 ug/l , sample collected Dec 17, 2025 12:00, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 12:00, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
1.14 ug/l , sample collected Dec 17, 2025 12:00, sampling point SM1 TTHM 2950 EPA method 524.2 Not recorded
Collected
Sep 25, 2025 12:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-165602-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:00, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:00, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:00, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:00, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:00, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:00, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2025 – Sep 30, 2025
6.9 ug/l , sample collected Sep 25, 2025 12:00, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 5 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:00, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 5 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:00, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 5 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:00, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.9 ug/l , sample collected Sep 25, 2025 12:00, sampling point SM1 TTHM 2950 EPA method 524.2 Jul 1, 2025 – Sep 30, 2025
Collected
Sep 25, 2025 12:30
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-165602-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:30, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
1.1 ug/l , sample collected Sep 25, 2025 12:30, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:30, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:30, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:30, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:30, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2025 – Sep 30, 2025
1.7 ug/l , sample collected Sep 25, 2025 12:30, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 12:30, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
1.2 ug/l , sample collected Sep 25, 2025 12:30, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
0.85 ug/l , sample collected Sep 25, 2025 12:30, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
3.75 ug/l , sample collected Sep 25, 2025 12:30, sampling point SM2 TTHM 2950 EPA method 524.2 Jul 1, 2025 – Sep 30, 2025
Collected
Sep 23, 2025 13:00
Sampling point
LC0001 Location withheld
Sample type
Routine
Lab sample
PB-250924-080
Laboratory
MSDH Lab
0.116 mg/l , sample collected Sep 23, 2025 13:00, sampling point LC0001 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.5 ug/l , sample collected Sep 23, 2025 13:00, sampling point LC0001 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 23, 2025 12:00
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-250924-079
Laboratory
MSDH Lab
0.157 mg/l , sample collected Sep 23, 2025 12:00, sampling point LC0003 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.7 ug/l , sample collected Sep 23, 2025 12:00, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 23, 2025 12:10
Sampling point
LC0004 Location withheld
Sample type
Routine
Lab sample
PB-250924-078
Laboratory
MSDH Lab
0.0202 mg/l , sample collected Sep 23, 2025 12:10, sampling point LC0004 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
2.4 ug/l , sample collected Sep 23, 2025 12:10, sampling point LC0004 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 23, 2025 11:40
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-250924-077
Laboratory
MSDH Lab
0.107 mg/l , sample collected Sep 23, 2025 11:40, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.7 ug/l , sample collected Sep 23, 2025 11:40, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 23, 2025 11:50
Sampling point
LC0008 Location withheld
Sample type
Routine
Lab sample
PB-250924-076
Laboratory
MSDH Lab
0.0276 mg/l , sample collected Sep 23, 2025 11:50, sampling point LC0008 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.8 ug/l , sample collected Sep 23, 2025 11:50, sampling point LC0008 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 23, 2025 11:55
Sampling point
LC0010 Location withheld
Sample type
Routine
Lab sample
PB-250924-075
Laboratory
MSDH Lab
0.134 mg/l , sample collected Sep 23, 2025 11:55, sampling point LC0010 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.5 ug/l , sample collected Sep 23, 2025 11:55, sampling point LC0010 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025

Routine (10).