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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

MS0050017 , North Benton W/A

21 of the 57 analytes this system has been tested for have been detected at least once, across 213 samples on record.

The other 36 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 213 samples on record, detections range from May 3, 2004 to June 9, 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 Benton W/A, 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 75 of 75 results Dec 28, 2004 Aug 13, 2024
Barium 1010 Inorganic Chemical 52 of 52 results Nov 15, 2004 Jun 9, 2026
Arsenic 1005 Inorganic Chemical 41 of 53 results Nov 15, 2004 Jun 9, 2026
Lead 1030 Inorganic Chemical 38 of 75 results Dec 28, 2004 Jun 29, 2021
Fluoride 1025 Inorganic Chemical 31 of 32 results Nov 15, 2004 Jun 9, 2026
Chromium 1020 Inorganic Chemical 31 of 52 results Feb 14, 2005 Dec 8, 2025
Nickel 1036 Inorganic Chemical 30 of 49 results Nov 15, 2004 Dec 8, 2025
TTHM 2950 Organic Chemical 5 of 8 results May 3, 2004 Feb 3, 2025
Selenium 1045 Inorganic Chemical 4 of 52 results Feb 14, 2005 Aug 25, 2008
Ethylbenzene 2992 Organic Chemical 4 of 30 results Jul 8, 2004 Sep 1, 2005
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 3 of 8 results Jun 25, 2007 Feb 3, 2025
Thallium, Total 1085 Inorganic Chemical 3 of 52 results Apr 25, 2007 Aug 25, 2008
Xylenes, Total 2955 Organic Chemical 3 of 30 results Sep 1, 2005 May 24, 2007
Mercury 1035 Inorganic Chemical 2 of 47 results Feb 14, 2005 Jun 9, 2026
Sodium 1052 Inorganic Chemical 2 of 2 results Jan 21, 2021 Oct 14, 2024
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 23 results Jan 17, 2023 Jan 17, 2023
Nitrite 1041 Inorganic Chemical 1 of 23 results Jan 17, 2023 Jan 17, 2023
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 2 results Nov 29, 2011 Nov 29, 2011
Radium-228 4030 Radionuclide 1 of 2 results Nov 29, 2011 Nov 29, 2011
Antimony, Total 1074 Inorganic Chemical 1 of 52 results Apr 25, 2007 Apr 25, 2007
Cadmium 1015 Inorganic Chemical 1 of 52 results Feb 14, 2005 Feb 14, 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 71–80 of 213 samples, newest first — collected April 27, 2015 to March 7, 2016. The summary above covers all 213.

73 results from the 10 samples listed here: 21 detected, 52 not detected. Across the whole record it is 330 of 1,481. 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 North Benton W/A, every result from 71 to 80 of 213 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
Mar 7, 2016 02:30
Sampling point
TF080
Sample type
Routine
Lab sample
160308-035IN
Laboratory
MSDH Lab
0.0055 mg/l , sample collected Mar 7, 2016 02:30, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2016 – Mar 31, 2016
0.0879 mg/l , sample collected Mar 7, 2016 02:30, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 7, 2016 02:30, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0019 mg/l , sample collected Mar 7, 2016 02:30, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.16 mg/l , sample collected Mar 7, 2016 02:30, sampling point TF080 Fluoride 1025 EPA method 300.0 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 7, 2016 02:30, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 7, 2016 02:30, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 7, 2016 02:30, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 7, 2016 02:30, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 7, 2016 02:30, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 7, 2016 02:30, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Collected
Dec 2, 2015 02:00
Sampling point
TF080
Sample type
Routine
Lab sample
151203-012IN
Laboratory
MSDH Lab
0.0117 mg/l , sample collected Dec 2, 2015 02:00, sampling point TF080 Arsenic 1005 EPA method 200.8 Oct 1, 2015 – Dec 31, 2015
0.0322 mg/l , sample collected Dec 2, 2015 02:00, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 2, 2015 02:00, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0028 mg/l , sample collected Dec 2, 2015 02:00, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 2, 2015 02:00, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 2, 2015 02:00, sampling point TF080 Nickel 1036 EPA method 200.8 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Dec 2, 2015 02:00, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 2, 2015 02:00, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 2, 2015 02:00, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 2, 2015 02:00, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Collected
Sep 17, 2015 02:10
Sampling point
TF080
Sample type
Routine
Lab sample
150924-002IN
Laboratory
MSDH Lab
0.0069 mg/l , sample collected Sep 17, 2015 02:10, sampling point TF080 Arsenic 1005 EPA method 200.8 Jul 1, 2015 – Sep 30, 2015
0.0773 mg/l , sample collected Sep 17, 2015 02:10, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2015 02:10, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0035 mg/l , sample collected Sep 17, 2015 02:10, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2015 02:10, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2015 02:10, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 17, 2015 02:10, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2015 02:10, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2015 02:10, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2015 02:10, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Collected
Jun 16, 2015 02:30
Sampling point
TF080
Sample type
Routine
Lab sample
150617-011VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Benzene 2990 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Toluene 2991 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:30, sampling point TF080 Styrene 2996 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Collected
Jun 11, 2015 07:00
Sampling point
DS000
Sample type
Routine
Lab sample
150612-024PB
Laboratory
MSDH Lab
0.0069 mg/l , sample collected Jun 11, 2015 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
0.003 mg/l , sample collected Jun 11, 2015 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
Collected
Jun 11, 2015 05:45
Sampling point
DS000
Sample type
Routine
Lab sample
150612-023PB
Laboratory
MSDH Lab
0.0127 mg/l , sample collected Jun 11, 2015 05:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
0.0058 mg/l , sample collected Jun 11, 2015 05:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
Collected
Jun 11, 2015 09:00
Sampling point
DS000
Sample type
Routine
Lab sample
150612-022PB
Laboratory
MSDH Lab
0.0164 mg/l , sample collected Jun 11, 2015 09:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
0.0041 mg/l , sample collected Jun 11, 2015 09:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
Collected
Jun 11, 2015 05:30
Sampling point
DS000
Sample type
Routine
Lab sample
150612-021PB
Laboratory
MSDH Lab
0.0093 mg/l , sample collected Jun 11, 2015 05:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 11, 2015 05:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
Collected
Jun 11, 2015 06:20
Sampling point
DS000
Sample type
Routine
Lab sample
150612-020PB
Laboratory
MSDH Lab
0.0022 mg/l , sample collected Jun 11, 2015 06:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 11, 2015 06:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
Collected
Apr 27, 2015 01:30
Sampling point
TF080
Sample type
Routine
Lab sample
150428-006IN
Laboratory
MSDH Lab
0.0133 mg/l , sample collected Apr 27, 2015 01:30, sampling point TF080 Arsenic 1005 EPA method 200.8 Apr 1, 2015 – Jun 30, 2015
0.0348 mg/l , sample collected Apr 27, 2015 01:30, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 27, 2015 01:30, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0018 mg/l , sample collected Apr 27, 2015 01:30, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 27, 2015 01:30, sampling point TF080 Fluoride 1025 EPA method 300.0 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 27, 2015 01:30, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 27, 2015 01:30, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 27, 2015 01:30, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 27, 2015 01:30, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 27, 2015 01:30, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 27, 2015 01:30, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016

Routine (10).