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 61–70 of 246 samples, newest first — collected September 24, 2018 to June 26, 2019. The summary above covers all 246.
37 results from the 10 samples listed here: 16 detected, 21 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 |
|---|---|---|
|
||
| 0.1826 mg/l , sample collected Jun 26, 2019 03:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 26, 2019 03:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
|
||
| 0.1486 mg/l , sample collected Jun 26, 2019 06:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| 0.003 mg/l , sample collected Jun 26, 2019 06:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
|
||
| 0.2965 mg/l , sample collected Jun 26, 2019 05:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| 0.0007 mg/l , sample collected Jun 26, 2019 05:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
|
||
| 0.047 mg/l , sample collected Jun 26, 2019 05:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| 0.0005 mg/l , sample collected Jun 26, 2019 05:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
|
||
| 0.0839 mg/l , sample collected Jun 26, 2019 07:19, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 26, 2019 07:19, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
|
||
| 0.0597 mg/l , sample collected Jun 26, 2019 06:15, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| 0.0014 mg/l , sample collected Jun 26, 2019 06:15, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Apr 16, 2019 13:30, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Apr 16, 2019 13:30, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Apr 16, 2019 13:30, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Apr 16, 2019 13:30, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| Not detected below 4 ug/l Minimum Reporting Level , sample collected Apr 16, 2019 13:30, sampling point MRT000 | TTHM 2950 | Not recorded |
|
||
| 0.006 mg/l , sample collected Apr 16, 2019 13:30, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 16, 2019 13:30, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 16, 2019 13:30, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 16, 2019 13:30, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 16, 2019 13:30, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.006 mg/l , sample collected Apr 16, 2019 13:30, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Not recorded |
|
||
| 0.81 mg/l , sample collected Jan 29, 2019 14:10, sampling point TF080 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2019 – Dec 31, 2019 |
| 0.81 mg/l , sample collected Jan 29, 2019 14:10, sampling point TF080 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2019 – Dec 31, 2019 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 29, 2019 14:10, sampling point TF080 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2019 – Dec 31, 2019 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 03:00, sampling point TF080 | Arsenic 1005 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| 0.0608 mg/l , sample collected Sep 24, 2018 03:00, sampling point TF080 | Barium 1010 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 03:00, sampling point TF080 | Cadmium 1015 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 03:00, sampling point TF080 | Chromium 1020 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 03:00, sampling point TF080 | Fluoride 1025 EPA method 300.0 | Jan 1, 2017 – Dec 31, 2019 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 03:00, sampling point TF080 | Mercury 1035 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| 0.0006 mg/l , sample collected Sep 24, 2018 03:00, sampling point TF080 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 03:00, sampling point TF080 | Selenium 1045 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 03:00, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 03:00, sampling point TF080 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 03:00, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
-
- Collected
- Jun 26, 2019 03:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 190628-063PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1826 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 26, 2019 06:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 190628-062PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1486 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.003 mg/l
-
- Collected
- Jun 26, 2019 05:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 190628-060PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2965 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
-
- Collected
- Jun 26, 2019 05:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 190628-059PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.047 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0005 mg/l
-
- Collected
- Jun 26, 2019 07:19
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 190628-058PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0839 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 26, 2019 06:15
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 190628-057PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0597 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0014 mg/l
-
- Collected
- Apr 16, 2019 13:30
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 190417-013TH
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Chloroform 2941 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
TTHM 2950
- Result
- Not detected below 4 ug/l Minimum Reporting Level
-
- Collected
- Apr 16, 2019 13:30
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 190417-013HA
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- 0.006 mg/l
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.006 mg/l
-
- Collected
- Jan 29, 2019 14:10
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 190130-059NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2019 – Dec 31, 2019
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- 0.81 mg/l
-
Nitrate 1040 EPA method QC10107041C
- Result
- 0.81 mg/l
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Sep 24, 2018 03:00
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 180925-052IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Barium 1010 EPA method 200.8
- Result
- 0.0608 mg/l
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Chromium 1020 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Fluoride 1025 EPA method 300.0
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Nickel 1036 EPA method 200.8
- Result
- 0.0006 mg/l
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
Routine (10).