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
MS0100009 , Town of Weir
20 of the 57 analytes this system has been tested for have been detected at least once, across 246 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 246 samples on record, detections range from October 12, 1993 to February 11, 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 | 142 of 151 results | Oct 12, 1993 | Sep 9, 2025 |
| Lead 1030 | Inorganic Chemical | 107 of 151 results | Oct 12, 1993 | Sep 9, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 23 of 23 results | May 3, 2004 | Feb 11, 2026 |
| Nitrate 1040 | Inorganic Chemical | 23 of 23 results | May 3, 2004 | Feb 11, 2026 |
| TTHM 2950 | Organic Chemical | 15 of 20 results | Jun 5, 2007 | Feb 11, 2026 |
| Bromoform 2942 | Organic Chemical | 13 of 15 results | Jun 5, 2007 | Feb 11, 2026 |
| Dibromochloromethane 2944 | Organic Chemical | 12 of 15 results | Jun 5, 2007 | Feb 11, 2026 |
| Barium 1010 | Inorganic Chemical | 11 of 11 results | Mar 19, 2002 | Jan 15, 2025 |
| Nickel 1036 | Inorganic Chemical | 9 of 11 results | Jan 12, 2004 | Jan 15, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 6 of 15 results | Feb 29, 2024 | Feb 11, 2026 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 6 of 21 results | Jun 5, 2007 | Feb 18, 2025 |
| Chromium 1020 | Inorganic Chemical | 5 of 11 results | Jan 12, 2004 | Jan 15, 2025 |
| Selenium 1045 | Inorganic Chemical | 4 of 11 results | Jan 12, 2004 | Mar 24, 2008 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Sep 23, 2019 | Oct 14, 2024 |
| Chloroform 2941 | Organic Chemical | 3 of 15 results | Feb 29, 2024 | Aug 27, 2024 |
| Nitrite 1041 | Inorganic Chemical | 2 of 23 results | Jan 24, 2011 | Jan 23, 2013 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 15 results | Apr 16, 2019 | Apr 16, 2019 |
| Dichloroacetic Acid 2451 | Organic Chemical | 1 of 15 results | Sep 14, 2017 | Sep 14, 2017 |
| Fluoride 1025 | Inorganic Chemical | 1 of 11 results | Apr 21, 2014 | Apr 21, 2014 |
| Cadmium 1015 | Inorganic Chemical | 1 of 11 results | Feb 16, 2005 | Feb 16, 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 81–90 of 246 samples, newest first — collected June 30, 2014 to September 7, 2016. The summary above covers all 246.
24 results from the 10 samples listed here: 15 detected, 9 not detected. Across the whole record it is 388 of 855. 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 |
|---|---|---|
|
||
| 0.0407 mg/l , sample collected Sep 7, 2016 06:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0005 mg/l , sample collected Sep 7, 2016 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0503 mg/l , sample collected Sep 6, 2016 06:15, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 6, 2016 06:15, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0612 mg/l , sample collected Sep 6, 2016 06:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0013 mg/l , sample collected Sep 6, 2016 06:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0253 mg/l , sample collected Sep 6, 2016, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 6, 2016, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.1222 mg/l , sample collected Sep 6, 2016, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.011 mg/l , sample collected Sep 6, 2016, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.3091 mg/l , sample collected Sep 6, 2016 06:15, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 6, 2016 06:15, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.74 mg/l , sample collected Mar 21, 2016 15:20, sampling point TF080 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2016 – Dec 31, 2016 |
| 0.74 mg/l , sample collected Mar 21, 2016 15:20, sampling point TF080 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2016 – Dec 31, 2016 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 21, 2016 15:20, sampling point TF080 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2016 – Dec 31, 2016 |
|
||
| 0.5 mg/l , sample collected Jan 26, 2015 13:30, sampling point TF080 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2015 – Dec 31, 2015 |
| 0.5 mg/l , sample collected Jan 26, 2015 13:30, sampling point TF080 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2015 – Dec 31, 2015 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 26, 2015 13:30, sampling point TF080 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2015 – Dec 31, 2015 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 30, 2014 12:45, sampling point TF080 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2014 – Dec 31, 2016 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 30, 2014 01:15, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| 1.14 ug/l , sample collected Jun 30, 2014 01:15, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 30, 2014 01:15, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 30, 2014 01:15, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 1.14 ug/l , sample collected Jun 30, 2014 01:15, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2012 – Dec 31, 2014 |
-
- Collected
- Sep 7, 2016 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160909-041PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0407 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0005 mg/l
-
- Collected
- Sep 6, 2016 06:15
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160909-050PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0503 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 6, 2016 06:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160909-045PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0612 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0013 mg/l
-
- Collected
- Sep 6, 2016
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160909-044PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0253 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 6, 2016
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160909-043PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1222 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.011 mg/l
-
- Collected
- Sep 6, 2016 06:15
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160909-042PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3091 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Mar 21, 2016 15:20
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 160322-057NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2016
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- 0.74 mg/l
-
Nitrate 1040 EPA method QC10107041C
- Result
- 0.74 mg/l
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Jan 26, 2015 13:30
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 150127-029NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2015
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- 0.5 mg/l
-
Nitrate 1040 EPA method QC10107041C
- Result
- 0.5 mg/l
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Jun 30, 2014 12:45
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 140701-064CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2014 – Dec 31, 2016
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Jun 30, 2014 01:15
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 140701-002TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- 1.14 ug/l
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 1.14 ug/l
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
Routine (10).