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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.

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

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 121–130 of 251 samples, newest first — collected June 9, 2011 to December 13, 2011. The summary above covers all 251.

47 results from the 10 samples listed here: 8 detected, 39 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.

Chemical and radiological sample results for McAdams Water Association, every result from 121 to 130 of 251 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 13, 2011 15:45
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
111214-045
Laboratory
Radiation Safety Engineering
1 pci/l , sample collected Dec 13, 2011 15:45, sampling point TF080 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.44 pci/l Minimum Reporting Level , sample collected Dec 13, 2011 15:45, sampling point TF080 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.299 pci/l Minimum Reporting Level , sample collected Dec 13, 2011 15:45, sampling point TF080 Radium-226 4020 EPA method 903.1 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.44 pci/l Minimum Reporting Level , sample collected Dec 13, 2011 15:45, sampling point TF080 Radium-228 4030 EPA method 904.0 Oct 1, 2011 – Dec 31, 2011
Collected
Sep 26, 2011 12:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
110927-007VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
0.642 ug/l , sample collected Sep 26, 2011 12:30, sampling point TF080 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Benzene 2990 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Toluene 2991 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 12:30, sampling point TF080 Styrene 2996 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Collected
Aug 8, 2011 09:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
110809-004CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Aug 8, 2011 09:30, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2011 – Dec 31, 2013
Collected
Jul 6, 2011 02:30
Sampling point
MRT000 4201 Ar 4171 Kosciusko
Sample type
Routine
Lab sample
110707-008HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jul 6, 2011 02:30, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 6, 2011 02:30, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 6, 2011 02:30, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 6, 2011 02:30, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 6, 2011 02:30, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Jul 6, 2011 02:30, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2011 – Dec 31, 2013
Collected
Jul 6, 2011 02:30
Sampling point
MRT000 4201 Ar 4171 Kosciusko
Sample type
Routine
Lab sample
110707-008TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 6, 2011 02:30, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 6, 2011 02:30, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 6, 2011 02:30, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 6, 2011 02:30, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 4 ug/l Minimum Reporting Level , sample collected Jul 6, 2011 02:30, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2011 – Dec 31, 2013
Collected
Jun 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110610-068PB
Laboratory
MSDH Lab
0.0334 mg/l , sample collected Jun 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110610-067PB
Laboratory
MSDH Lab
0.0024 mg/l , sample collected Jun 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110610-066PB
Laboratory
MSDH Lab
0.01 mg/l , sample collected Jun 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110610-065PB
Laboratory
MSDH Lab
0.1087 mg/l , sample collected Jun 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110610-069PB
Laboratory
MSDH Lab
0.0565 mg/l , sample collected Jun 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0006 mg/l , sample collected Jun 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011

Routine (10).