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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

MS0740002 , Improve Water Association

21 of the 58 analytes this system has been tested for have been detected at least once, across 219 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 219 samples on record, detections range from October 29, 2003 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 Improve 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 60 of 60 results Aug 14, 2007 Aug 9, 2023
Nitrate-Nitrite 1038 Inorganic Chemical 42 of 43 results Jun 14, 2004 Jul 30, 2026
Nitrate 1040 Inorganic Chemical 42 of 43 results Jun 14, 2004 Jul 30, 2026
Lead 1030 Inorganic Chemical 26 of 60 results Aug 14, 2007 Aug 9, 2023
Barium 1010 Inorganic Chemical 21 of 21 results Oct 29, 2003 Jul 30, 2026
Nickel 1036 Inorganic Chemical 11 of 19 results Apr 5, 2004 Apr 1, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 8 of 8 results Mar 14, 2012 Oct 1, 2019
Combined Radium (-226 & -228) 4010 Radionuclide 7 of 9 results Mar 14, 2012 Oct 1, 2019
Radium-226 4020 Radionuclide 7 of 9 results Mar 14, 2012 Oct 1, 2019
Radium-228 4030 Radionuclide 7 of 9 results Mar 14, 2012 Oct 1, 2019
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 23, 2019 Jul 30, 2026
Fluoride 1025 Inorganic Chemical 5 of 21 results Apr 2, 2014 Jan 13, 2021
Chromium 1020 Inorganic Chemical 3 of 21 results May 29, 2013 Apr 1, 2025
Selenium 1045 Inorganic Chemical 3 of 21 results Apr 5, 2004 Apr 17, 2006
Mercury 1035 Inorganic Chemical 2 of 21 results Dec 14, 2016 Jul 30, 2026
Arsenic 1005 Inorganic Chemical 2 of 21 results Apr 5, 2004 Apr 1, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 2 of 19 results Jul 15, 2010 Oct 28, 2020
TTHM 2950 Organic Chemical 2 of 18 results Sep 19, 2007 Jul 15, 2010
Monobromoacetic Acid 2453 Organic Chemical 1 of 14 results Oct 28, 2020 Oct 28, 2020
Gross Alpha Particle Activity 4109 Radionuclide 1 of 1 result Mar 13, 2014 Mar 13, 2014
Cyanide 1024 Inorganic Chemical 1 of 19 results Apr 17, 2006 Apr 17, 2006

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 211–219 of 219 samples, newest first — collected October 29, 2003 to April 5, 2004. The summary above covers all 219.

93 results from the 9 samples listed here: 7 detected, 86 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 Improve Water Association, every result from 211 to 219 of 219 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
Apr 5, 2004
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
040406-069CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Apr 5, 2004
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
040406-030IN
Laboratory
MSDH Lab
0.001 mg/l , sample collected Apr 5, 2004, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.119 mg/l , sample collected Apr 5, 2004, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF080 Fluoride 1025 EPA method 300.0 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.001 mg/l , sample collected Apr 5, 2004, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
0.001 mg/l , sample collected Apr 5, 2004, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 2.5 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF080 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Collected
Apr 5, 2004
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
040406-011IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Arsenic 1005 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.019 mg/l , sample collected Apr 5, 2004, sampling point TF081 Barium 1010 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Cadmium 1015 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Chromium 1020 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Fluoride 1025 EPA method 300.0 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Mercury 1035 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Selenium 1045 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 2.5 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Antimony, Total 1074 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 5, 2004, sampling point TF081 Thallium, Total 1085 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Collected
Mar 9, 2004
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
040310-034VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 1,2,4-Trichlorobenzene 2378 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Cis-1,2-Dichloroethylene 2380 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Xylenes, Total 2955 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Dichloromethane 2964 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 O-Dichlorobenzene 2968 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 P-Dichlorobenzene 2969 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Vinyl Chloride 2976 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 1,1-Dichloroethylene 2977 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Trans-1,2-Dichloroethylene 2979 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 1,2-Dichloroethane 2980 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 1,1,1-Trichloroethane 2981 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Carbon Tetrachloride 2982 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 1,2-Dichloropropane 2983 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Trichloroethylene 2984 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 1,1,2-Trichloroethane 2985 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Tetrachloroethylene 2987 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Chlorobenzene 2989 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Benzene 2990 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Toluene 2991 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Ethylbenzene 2992 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 9, 2004, sampling point TF080 Styrene 2996 Jan 1, 2004 – Mar 31, 2004
Collected
Mar 8, 2004
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
040309-022VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 1,2,4-Trichlorobenzene 2378 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Cis-1,2-Dichloroethylene 2380 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Xylenes, Total 2955 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Dichloromethane 2964 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 O-Dichlorobenzene 2968 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 P-Dichlorobenzene 2969 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Vinyl Chloride 2976 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 1,1-Dichloroethylene 2977 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Trans-1,2-Dichloroethylene 2979 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 1,2-Dichloroethane 2980 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 1,1,1-Trichloroethane 2981 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Carbon Tetrachloride 2982 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 1,2-Dichloropropane 2983 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Trichloroethylene 2984 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 1,1,2-Trichloroethane 2985 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Tetrachloroethylene 2987 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Chlorobenzene 2989 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Benzene 2990 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Toluene 2991 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Ethylbenzene 2992 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 8, 2004, sampling point TF081 Styrene 2996 Not recorded
Collected
Oct 29, 2003
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
031030-040IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Arsenic 1005 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.016 mg/l , sample collected Oct 29, 2003, sampling point TF081 Barium 1010 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Cadmium 1015 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Chromium 1020 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Fluoride 1025 EPA method 300.0 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Mercury 1035 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Selenium 1045 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 2.5 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Antimony, Total 1074 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Thallium, Total 1085 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Collected
Oct 29, 2003
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
031030-039IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Arsenic 1005 EPA method 200.8 Not recorded
0.104 mg/l , sample collected Oct 29, 2003, sampling point TF080 Barium 1010 EPA method 200.8 Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Cadmium 1015 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Chromium 1020 EPA method 200.8 Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Fluoride 1025 EPA method 300.0 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Mercury 1035 EPA method 200.8 Not recorded
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Selenium 1045 EPA method 200.8 Not recorded
Not detected below 2.5 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Not recorded
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Not recorded
Collected
Oct 29, 2003
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
031030-026CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF081 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Oct 29, 2003
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
031030-002CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004

Routine (9).