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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 121–130 of 213 samples, newest first — collected July 10, 2008 to February 4, 2009. The summary above covers all 213.

89 results from the 10 samples listed here: 16 detected, 73 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 121 to 130 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
Feb 4, 2009
Sampling point
TF080
Sample type
Routine
Lab sample
090205-057IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 4, 2009, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2009 – Mar 31, 2009
0.188072 mg/l , sample collected Feb 4, 2009, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 4, 2009, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 4, 2009, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 4, 2009, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 4, 2009, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 4, 2009, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 4, 2009, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 4, 2009, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 4, 2009, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Nov 17, 2008
Sampling point
TF080
Sample type
Routine
Lab sample
081118-001IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 17, 2008, sampling point TF080 Arsenic 1005 EPA method 200.8 Oct 1, 2008 – Dec 31, 2008
0.19171 mg/l , sample collected Nov 17, 2008, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Nov 17, 2008, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.001593 mg/l , sample collected Nov 17, 2008, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Nov 17, 2008, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.001113 mg/l , sample collected Nov 17, 2008, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 17, 2008, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 17, 2008, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Nov 17, 2008, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 17, 2008, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Oct 15, 2008
Sampling point
TF080
Sample type
Routine
Lab sample
081016-013VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Xylenes, Total 2955 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 O-Dichlorobenzene 2968 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 P-Dichlorobenzene 2969 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Vinyl Chloride 2976 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 1,1-Dichloroethylene 2977 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 1,2-Dichloroethane 2980 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 1,1,1-Trichloroethane 2981 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Carbon Tetrachloride 2982 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 1,2-Dichloropropane 2983 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 1,1,2-Trichloroethane 2985 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Benzene 2990 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Toluene 2991 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 15, 2008, sampling point TF080 Styrene 2996 EPA method 524.2 Oct 1, 2008 – Dec 31, 2008
Collected
Sep 23, 2008
Sampling point
TF080
Sample type
Routine
Lab sample
080924-018VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Xylenes, Total 2955 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 O-Dichlorobenzene 2968 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 P-Dichlorobenzene 2969 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Vinyl Chloride 2976 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 1,1-Dichloroethylene 2977 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 1,2-Dichloroethane 2980 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 1,1,1-Trichloroethane 2981 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Carbon Tetrachloride 2982 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 1,2-Dichloropropane 2983 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 1,1,2-Trichloroethane 2985 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Benzene 2990 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Toluene 2991 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 23, 2008, sampling point TF080 Styrene 2996 EPA method 524.2 Jul 1, 2008 – Sep 30, 2008
Collected
Aug 25, 2008
Sampling point
TF080
Sample type
Routine
Lab sample
080826-001IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 25, 2008, sampling point TF080 Arsenic 1005 EPA method 200.8 Jul 1, 2008 – Sep 30, 2008
0.173211 mg/l , sample collected Aug 25, 2008, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Aug 25, 2008, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.001286 mg/l , sample collected Aug 25, 2008, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Aug 25, 2008, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.00007 mg/l , sample collected Aug 25, 2008, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
0.000532 mg/l , sample collected Aug 25, 2008, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 25, 2008, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Aug 25, 2008, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.000649 mg/l , sample collected Aug 25, 2008, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Jul 14, 2008
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
080715-012TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 14, 2008, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 14, 2008, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 14, 2008, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 14, 2008, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jul 14, 2008, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2008 – Dec 31, 2010
Collected
Jul 14, 2008
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
080715-013HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jul 14, 2008, 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 14, 2008, 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 14, 2008, 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 14, 2008, 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 14, 2008, 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 14, 2008, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2008 – Dec 31, 2010
Collected
Jul 10, 2008
Sampling point
DS000
Sample type
Routine
Lab sample
080711-021PB
Laboratory
MSDH Lab
0.0112 mg/l , sample collected Jul 10, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
0.0006 mg/l , sample collected Jul 10, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Collected
Jul 10, 2008
Sampling point
DS000
Sample type
Routine
Lab sample
080711-020PB
Laboratory
MSDH Lab
0.0233 mg/l , sample collected Jul 10, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
0.0006 mg/l , sample collected Jul 10, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Collected
Jul 10, 2008
Sampling point
DS000
Sample type
Routine
Lab sample
080711-019PB
Laboratory
MSDH Lab
0.0174 mg/l , sample collected Jul 10, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
0.0007 mg/l , sample collected Jul 10, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008

Routine (10).