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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

MS0600002 , Big Field Water Association

30 of the 59 analytes this system has been tested for have been detected at least once, across 218 samples on record.

The other 29 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 218 samples on record, detections range from October 20, 2003 to July 20, 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 Big Field 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 30 of 30 results Jul 10, 2007 Jul 19, 2023
Barium 1010 Inorganic Chemical 29 of 29 results Oct 20, 2003 Jul 20, 2026
Lead 1030 Inorganic Chemical 27 of 30 results Jul 10, 2007 Jul 19, 2023
Fluoride 1025 Inorganic Chemical 23 of 28 results Oct 20, 2003 Jul 20, 2026
Chromium 1020 Inorganic Chemical 15 of 29 results Oct 20, 2003 Apr 27, 2022
TTHM 2950 Organic Chemical 10 of 10 results Aug 9, 2004 Jun 24, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 9 of 10 results Sep 5, 2007 Jun 24, 2026
Arsenic 1005 Inorganic Chemical 8 of 29 results Mar 22, 2004 Apr 2, 2025
Selenium 1045 Inorganic Chemical 6 of 29 results Mar 22, 2004 May 6, 2013
Dichloroacetic Acid 2451 Organic Chemical 5 of 5 results Sep 5, 2007 Jun 24, 2026
Trichloroacetic Acid 2452 Organic Chemical 5 of 5 results Sep 5, 2007 Jun 24, 2026
Chloroform 2941 Organic Chemical 5 of 5 results Sep 5, 2007 Jun 24, 2026
Bromodichloromethane 2943 Organic Chemical 5 of 5 results Sep 5, 2007 Jun 24, 2026
Xylenes, Total 2955 Organic Chemical 5 of 43 results Mar 2, 2004 Mar 9, 2009
Sodium 1052 Inorganic Chemical 4 of 4 results Nov 7, 2023 Jul 20, 2026
Nickel 1036 Inorganic Chemical 3 of 27 results May 6, 2013 Apr 2, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 2 of 2 results Aug 11, 2020 Aug 11, 2020
Combined Radium (-226 & -228) 4010 Radionuclide 2 of 6 results Sep 28, 2011 Aug 11, 2020
Dichloromethane 2964 Organic Chemical 2 of 43 results Aug 23, 2004 Aug 23, 2004
Dibromoacetic Acid 2454 Organic Chemical 1 of 5 results Jun 24, 2026 Jun 24, 2026
Bromoform 2942 Organic Chemical 1 of 5 results Jun 24, 2026 Jun 24, 2026
Dibromochloromethane 2944 Organic Chemical 1 of 5 results Jun 24, 2026 Jun 24, 2026
Radium-228 4030 Radionuclide 1 of 6 results Aug 11, 2020 Aug 11, 2020
Monochloroacetic Acid 2450 Organic Chemical 1 of 5 results Dec 12, 2016 Dec 12, 2016
Gross Alpha Particle Activity 4109 Radionuclide 1 of 8 results Sep 10, 2012 Sep 10, 2012
Radium-226 4020 Radionuclide 1 of 6 results Sep 28, 2011 Sep 28, 2011
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 48 results Jun 9, 2004 Jun 9, 2004
Nitrate 1040 Inorganic Chemical 1 of 48 results Jun 9, 2004 Jun 9, 2004
Ethylbenzene 2992 Organic Chemical 1 of 43 results Mar 2, 2004 Mar 2, 2004
Beryllium, Total 1075 Inorganic Chemical 1 of 29 results Oct 20, 2003 Oct 20, 2003

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 51–60 of 218 samples, newest first — collected August 11, 2020 to October 5, 2021. The summary above covers all 218.

58 results from the 10 samples listed here: 6 detected, 52 not detected. Across the whole record it is 206 of 1,564. 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 Big Field Water Association, every result from 51 to 60 of 218 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
Oct 5, 2021 12:45
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NI-211006-021
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 5, 2021 12:45, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Oct 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Oct 5, 2021 12:45, sampling point TF103 Nitrate 1040 EPA method QC10107041C Oct 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Oct 5, 2021 12:45, sampling point TF103 Nitrite 1041 EPA method QC10107041C Oct 1, 2021 – Dec 31, 2021
Collected
Sep 28, 2021 12:30
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
IN-210930-001
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2021 12:30, sampling point TF103 Arsenic 1005 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
0.0093 mg/l , sample collected Sep 28, 2021 12:30, sampling point TF103 Barium 1010 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2021 12:30, sampling point TF103 Cadmium 1015 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
0.0027 mg/l , sample collected Sep 28, 2021 12:30, sampling point TF103 Chromium 1020 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
0.147 mg/l , sample collected Sep 28, 2021 12:30, sampling point TF103 Fluoride 1025 EPA method QC 10-109-12-2-A Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2021 12:30, sampling point TF103 Mercury 1035 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2021 12:30, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 28, 2021 12:30, sampling point TF103 Selenium 1045 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2021 12:30, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2021 12:30, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2021 12:30, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Collected
Sep 28, 2021 12:40
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
RU-210930-001
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2021 12:40, sampling point TF103 Combined Uranium 4006 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Collected
Sep 14, 2021 12:30
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
IN-210915-008
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 14, 2021 12:30, sampling point TF103 Arsenic 1005 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
0.0095 mg/l , sample collected Sep 14, 2021 12:30, sampling point TF103 Barium 1010 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 14, 2021 12:30, sampling point TF103 Cadmium 1015 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 14, 2021 12:30, sampling point TF103 Chromium 1020 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
0.152 mg/l , sample collected Sep 14, 2021 12:30, sampling point TF103 Fluoride 1025 EPA method QC 10-109-12-2-A Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 14, 2021 12:30, sampling point TF103 Mercury 1035 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 14, 2021 12:30, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 14, 2021 12:30, sampling point TF103 Selenium 1045 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 14, 2021 12:30, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 14, 2021 12:30, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 14, 2021 12:30, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Collected
Sep 14, 2021 12:45
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
CN-210915-003
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 14, 2021 12:45, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jul 1, 2021 – Sep 30, 2021
Collected
Aug 11, 2021 12:30
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NI-210812-002
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Aug 11, 2021 12:30, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jul 1, 2021 – Sep 30, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Aug 11, 2021 12:30, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jul 1, 2021 – Sep 30, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Aug 11, 2021 12:30, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jul 1, 2021 – Sep 30, 2021
Collected
Mar 31, 2021 12:50
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
210401-009VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 31, 2021 12:50, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Collected
Mar 24, 2021 13:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-210325-004
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 24, 2021 13:30, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 24, 2021 13:30, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 24, 2021 13:30, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Collected
Aug 11, 2020 13:55
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
4698467
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Aug 11, 2020 13:55, sampling point TF103 Combined Radium (-226 & -228) 4010 EPA method 7500-RA Not recorded
Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Aug 11, 2020 13:55, sampling point TF103 Radium-226 4020 EPA method 7500-RAB Jan 1, 2012 – Dec 31, 2020
Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Aug 11, 2020 13:55, sampling point TF103 Radium-228 4030 EPA method 7500-RAD Jan 1, 2012 – Dec 31, 2020
Collected
Aug 11, 2020 13:55
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
4698466
Laboratory
Eurofins Eaton Analytical South Bend in
5.3 pci/l , sample collected Aug 11, 2020 13:55, sampling point TF103 Gross Alpha, Incl. Radon & U 4002 EPA method 7110B Jan 1, 2012 – Dec 31, 2020

Routine (10).