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.
| 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 51–60 of 213 samples, newest first — collected January 30, 2018 to July 24, 2018. The summary above covers all 213.
41 results from the 10 samples listed here: 15 detected, 26 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.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.0063 mg/l , sample collected Jul 24, 2018 06:45, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 24, 2018 06:45, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.0133 mg/l , sample collected Jul 24, 2018 06:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.001 mg/l , sample collected Jul 24, 2018 06:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.004 mg/l , sample collected Jul 24, 2018 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 24, 2018 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 17, 2018 14:00, sampling point TF080 | Combined Uranium 4006 EPA method 200.8 | Jan 1, 2012 – Dec 31, 2020 |
|
||
| 0.0145 mg/l , sample collected Jul 17, 2018 02:00, sampling point TF080 | Arsenic 1005 EPA method 200.8 | Jul 1, 2018 – Sep 30, 2018 |
| 0.0335 mg/l , sample collected Jul 17, 2018 02:00, sampling point TF080 | Barium 1010 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 17, 2018 02:00, sampling point TF080 | Cadmium 1015 EPA method 200.8 | Not recorded |
| 0.0043 mg/l , sample collected Jul 17, 2018 02:00, sampling point TF080 | Chromium 1020 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 17, 2018 02:00, sampling point TF080 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 17, 2018 02:00, sampling point TF080 | Selenium 1045 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 17, 2018 02:00, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 17, 2018 02:00, sampling point TF080 | Beryllium, Total 1075 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 17, 2018 02:00, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Not recorded |
|
||
| 0.009 mg/l , sample collected Jun 24, 2018 06:25, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0005 mg/l , sample collected Jun 24, 2018 06:25, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 18, 2018 02:15, sampling point TF080 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2017 – Dec 31, 2019 |
|
||
| 0.0154 mg/l , sample collected Apr 9, 2018 02:00, sampling point TF080 | Arsenic 1005 EPA method 200.8 | Apr 1, 2018 – Jun 30, 2018 |
| 0.0346 mg/l , sample collected Apr 9, 2018 02:00, sampling point TF080 | Barium 1010 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 9, 2018 02:00, sampling point TF080 | Cadmium 1015 EPA method 200.8 | Not recorded |
| 0.0052 mg/l , sample collected Apr 9, 2018 02:00, sampling point TF080 | Chromium 1020 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 9, 2018 02:00, sampling point TF080 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 9, 2018 02:00, sampling point TF080 | Selenium 1045 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 9, 2018 02:00, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 9, 2018 02:00, sampling point TF080 | Beryllium, Total 1075 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 9, 2018 02:00, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Not recorded |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 30, 2018 14:05, sampling point TF080 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 30, 2018 14:05, sampling point TF080 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 30, 2018 14:05, sampling point TF080 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
|
||
| 0.0153 mg/l , sample collected Jan 30, 2018 02:00, sampling point TF080 | Arsenic 1005 EPA method 200.8 | Jan 1, 2018 – Mar 31, 2018 |
| 0.0334 mg/l , sample collected Jan 30, 2018 02:00, sampling point TF080 | Barium 1010 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 30, 2018 02:00, sampling point TF080 | Cadmium 1015 EPA method 200.8 | Not recorded |
| 0.0053 mg/l , sample collected Jan 30, 2018 02:00, sampling point TF080 | Chromium 1020 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 30, 2018 02:00, sampling point TF080 | Mercury 1035 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 30, 2018 02:00, sampling point TF080 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 30, 2018 02:00, sampling point TF080 | Selenium 1045 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 30, 2018 02:00, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 30, 2018 02:00, sampling point TF080 | Beryllium, Total 1075 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 30, 2018 02:00, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Not recorded |
-
- Collected
- Jul 24, 2018 06:45
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 180725-009PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0063 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 24, 2018 06:30
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 180725-008PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0133 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.001 mg/l
-
- Collected
- Jul 24, 2018 07:00
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 180725-007PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.004 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 17, 2018 14:00
- Sampling point
- TF080
- Sample type
- Routine
- Lab sample
- 180718-016RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2020
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 17, 2018 02:00
- Sampling point
- TF080
- Sample type
- Routine
- Lab sample
- 180718-001IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- 0.0145 mg/l
- Monitoring period
- Jul 1, 2018 – Sep 30, 2018
-
Barium 1010 EPA method 200.8
- Result
- 0.0335 mg/l
- Monitoring period
- Not recorded
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Chromium 1020 EPA method 200.8
- Result
- 0.0043 mg/l
- Monitoring period
- Not recorded
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
- Collected
- Jun 24, 2018 06:25
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 180725-010PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.009 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0005 mg/l
-
- Collected
- Apr 18, 2018 02:15
- Sampling point
- TF080
- Sample type
- Routine
- Lab sample
- 180419-015CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Apr 9, 2018 02:00
- Sampling point
- TF080
- Sample type
- Routine
- Lab sample
- 180410-001IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- 0.0154 mg/l
- Monitoring period
- Apr 1, 2018 – Jun 30, 2018
-
Barium 1010 EPA method 200.8
- Result
- 0.0346 mg/l
- Monitoring period
- Not recorded
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Chromium 1020 EPA method 200.8
- Result
- 0.0052 mg/l
- Monitoring period
- Not recorded
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
- Collected
- Jan 30, 2018 14:05
- Sampling point
- TF080
- Sample type
- Routine
- Lab sample
- 180131-071NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2018
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method QC10107041C
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Jan 30, 2018 02:00
- Sampling point
- TF080
- Sample type
- Routine
- Lab sample
- 180131-001IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- 0.0153 mg/l
- Monitoring period
- Jan 1, 2018 – Mar 31, 2018
-
Barium 1010 EPA method 200.8
- Result
- 0.0334 mg/l
- Monitoring period
- Not recorded
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Chromium 1020 EPA method 200.8
- Result
- 0.0053 mg/l
- Monitoring period
- Not recorded
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
Routine (10).