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
MS0180001 , Barrontown W/A
46 of the 75 analytes this system has been tested for have been detected at least once, across 819 samples on record.
The other 29 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 819 samples on record, detections range from December 21, 1992 to April 28, 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 | 274 of 323 results | Dec 21, 1992 | Jul 2, 2024 |
| Lead 1030 | Inorganic Chemical | 159 of 323 results | Dec 21, 1992 | Jun 26, 2024 |
| Fluoride 1025 | Inorganic Chemical | 63 of 63 results | May 14, 2002 | Feb 5, 2025 |
| Barium 1010 | Inorganic Chemical | 62 of 62 results | May 14, 2002 | Feb 5, 2025 |
| Chromium 1020 | Inorganic Chemical | 37 of 62 results | May 14, 2002 | Feb 5, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 21 of 31 results | Mar 7, 2012 | Mar 16, 2016 |
| TTHM 2950 | Organic Chemical | 19 of 21 results | May 19, 2004 | Apr 28, 2026 |
| Nickel 1036 | Inorganic Chemical | 19 of 62 results | Feb 28, 2005 | Feb 5, 2025 |
| Sodium 1052 | Inorganic Chemical | 19 of 19 results | Jun 9, 2008 | Jan 30, 2024 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 18 of 40 results | Sep 29, 2009 | Mar 16, 2016 |
| Radium-226 4020 | Radionuclide | 17 of 40 results | Sep 29, 2009 | Mar 16, 2016 |
| Chloroform 2941 | Organic Chemical | 14 of 16 results | Sep 18, 2008 | Apr 28, 2026 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 14 of 18 results | Sep 18, 2008 | Dec 16, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 13 of 16 results | Sep 18, 2008 | Apr 28, 2026 |
| Dibromochloromethane 2944 | Organic Chemical | 12 of 16 results | Sep 18, 2008 | Apr 28, 2026 |
| Trichloroacetic Acid 2452 | Organic Chemical | 11 of 14 results | Sep 18, 2008 | Dec 16, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 10 of 14 results | Jul 12, 2012 | Dec 16, 2025 |
| Sulfate 1055 | Inorganic Chemical | 10 of 10 results | May 14, 2002 | Jun 9, 2008 |
| Xylenes, Total 2955 | Organic Chemical | 8 of 121 results | Jul 24, 2012 | Mar 6, 2024 |
| Gross Alpha, Excl. Radon & U 4000 | Radionuclide | 8 of 9 results | Sep 29, 2009 | Mar 4, 2010 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 8 of 9 results | Sep 29, 2009 | Mar 4, 2010 |
| Cyanide 1024 | Inorganic Chemical | 6 of 56 results | Feb 28, 2005 | Jun 10, 2025 |
| Gross Beta Particle Activity 4100 | Radionuclide | 6 of 6 results | Sep 29, 2009 | Mar 4, 2010 |
| Selenium 1045 | Inorganic Chemical | 6 of 62 results | Jan 25, 2006 | Nov 5, 2008 |
| Radium-228 4030 | Radionuclide | 5 of 40 results | Sep 29, 2009 | Mar 4, 2010 |
| Cadmium 1015 | Inorganic Chemical | 5 of 62 results | Jan 25, 2006 | Jan 25, 2006 |
| Nitrite 1041 | Inorganic Chemical | 4 of 128 results | Jan 10, 2022 | Jan 10, 2022 |
| Monochloroacetic Acid 2450 | Organic Chemical | 3 of 14 results | Sep 2, 2014 | May 6, 2020 |
| Carbon Tetrachloride 2982 | Organic Chemical | 1 of 121 results | Feb 5, 2025 | Feb 5, 2025 |
| Dibromoacetic Acid 2454 | Organic Chemical | 1 of 14 results | Nov 16, 2020 | Nov 16, 2020 |
| Toluene 2991 | Organic Chemical | 1 of 121 results | Jul 26, 2017 | Jul 26, 2017 |
| Ethylbenzene 2992 | Organic Chemical | 1 of 121 results | Nov 15, 2016 | Nov 15, 2016 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 14 results | Jul 12, 2012 | Jul 12, 2012 |
| Calcium 1016 | Inorganic Chemical | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| Iron 1028 | Inorganic Chemical | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| Magnesium 1031 | Inorganic Chemical | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| Manganese 1032 | Inorganic Chemical | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| Residue, Total, Filterable 1057 | Water Quality | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| Alkalinity, Caco3 Stability 1067 | Water Quality | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| Carbon Dioxide 1901 | Water Quality | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| Hardness, Total (As Caco3) 1915 | Water Quality | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| PH 1925 | Water Quality | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| Alkalinity, Total 1927 | Water Quality | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| Iron, Field Result FEFD | Inorganic Chemical | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| Calculated Sodium NACA | Water Quality | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
| PH, Field Result PHFD | Water Quality | 1 of 1 result | Jun 9, 2008 | Jun 9, 2008 |
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 651–660 of 819 samples, newest first — collected July 11, 2001 to May 14, 2002. The summary above covers all 819.
45 results from the 10 samples listed here: 15 detected, 30 not detected. Across the whole record it is 869 of 4,753. 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 |
|---|---|---|
|
||
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF101 | Arsenic 1005 EPA method 200.8 | Not recorded |
| 0.004 mg/l , sample collected May 14, 2002, sampling point TF101 | Barium 1010 EPA method 200.8 | Not recorded |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF101 | Cadmium 1015 EPA method 200.8 | Not recorded |
| 0.006 mg/l , sample collected May 14, 2002, sampling point TF101 | Chromium 1020 EPA method 200.8 | Not recorded |
| 0.15 mg/l , sample collected May 14, 2002, sampling point TF101 | Fluoride 1025 EPA method 300.0 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF101 | Mercury 1035 EPA method 200.8 | Not recorded |
| Not detected below 0.005 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF101 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF101 | Selenium 1045 EPA method 200.8 | Not recorded |
| 8.1 mg/l , sample collected May 14, 2002, sampling point TF101 | Sulfate 1055 EPA method 300.0 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF101 | Antimony, Total 1074 EPA method 200.8 | Not recorded |
| Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF101 | Beryllium, Total 1075 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF101 | Thallium, Total 1085 EPA method 200.8 | Not recorded |
|
||
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF102 | Arsenic 1005 EPA method 200.8 | Not recorded |
| 0.005 mg/l , sample collected May 14, 2002, sampling point TF102 | Barium 1010 EPA method 200.8 | Not recorded |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF102 | Cadmium 1015 EPA method 200.8 | Not recorded |
| 0.006 mg/l , sample collected May 14, 2002, sampling point TF102 | Chromium 1020 EPA method 200.8 | Not recorded |
| 0.2 mg/l , sample collected May 14, 2002, sampling point TF102 | Fluoride 1025 EPA method 300.0 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF102 | Mercury 1035 EPA method 200.8 | Not recorded |
| Not detected below 0.005 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF102 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF102 | Selenium 1045 EPA method 200.8 | Not recorded |
| 8.2 mg/l , sample collected May 14, 2002, sampling point TF102 | Sulfate 1055 EPA method 300.0 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF102 | Antimony, Total 1074 EPA method 200.8 | Not recorded |
| Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF102 | Beryllium, Total 1075 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF102 | Thallium, Total 1085 EPA method 200.8 | Not recorded |
|
||
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF104 | Arsenic 1005 EPA method 200.8 | Not recorded |
| 0.028 mg/l , sample collected May 14, 2002, sampling point TF104 | Barium 1010 EPA method 200.8 | Not recorded |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF104 | Cadmium 1015 EPA method 200.8 | Not recorded |
| 0.008 mg/l , sample collected May 14, 2002, sampling point TF104 | Chromium 1020 EPA method 200.8 | Not recorded |
| 0.11 mg/l , sample collected May 14, 2002, sampling point TF104 | Fluoride 1025 EPA method 300.0 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF104 | Mercury 1035 EPA method 200.8 | Not recorded |
| Not detected below 0.005 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF104 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF104 | Selenium 1045 EPA method 200.8 | Not recorded |
| 7.6 mg/l , sample collected May 14, 2002, sampling point TF104 | Sulfate 1055 EPA method 300.0 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF104 | Antimony, Total 1074 EPA method 200.8 | Not recorded |
| Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF104 | Beryllium, Total 1075 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 14, 2002, sampling point TF104 | Thallium, Total 1085 EPA method 200.8 | Not recorded |
|
||
| Not detected below 0.01 mg/l Minimum Reporting Level , sample collected May 7, 2002, sampling point TF102 | Cyanide 1024 EPA method 335.4 | Jan 1, 2002 – Dec 31, 2004 |
|
||
| Not detected below 0.01 mg/l Minimum Reporting Level , sample collected May 7, 2002, sampling point TF104 | Cyanide 1024 EPA method 335.4 | Jan 1, 2002 – Dec 31, 2004 |
|
||
| Not detected below 0.01 mg/l Minimum Reporting Level , sample collected May 7, 2002, sampling point TF103 | Cyanide 1024 EPA method 335.4 | Jan 1, 2002 – Dec 31, 2004 |
|
||
| Not detected below 0.01 mg/l Minimum Reporting Level , sample collected May 7, 2002, sampling point TF101 | Cyanide 1024 EPA method 335.4 | Jan 1, 2002 – Dec 31, 2004 |
|
||
| Not detected below 0.197 mfl Minimum Reporting Level , sample collected Apr 2, 2002, sampling point DS000 | Asbestos 1094 | Not recorded |
|
||
| 0.121 mg/l , sample collected Jul 16, 2001, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.007 mg/l , sample collected Jul 16, 2001, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.07 mg/l , sample collected Jul 11, 2001, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Jul 11, 2001, sampling point DS000 | Lead 1030 | Not recorded |
-
- Collected
- May 14, 2002
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 020515-004IN
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Barium 1010 EPA method 200.8
- Result
- 0.004 mg/l
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
-
Chromium 1020 EPA method 200.8
- Result
- 0.006 mg/l
-
Fluoride 1025 EPA method 300.0
- Result
- 0.15 mg/l
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.005 mg/l Minimum Reporting Level
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Sulfate 1055 EPA method 300.0
- Result
- 8.1 mg/l
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0003 mg/l Minimum Reporting Level
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- May 14, 2002
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 020515-003IN
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Barium 1010 EPA method 200.8
- Result
- 0.005 mg/l
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
-
Chromium 1020 EPA method 200.8
- Result
- 0.006 mg/l
-
Fluoride 1025 EPA method 300.0
- Result
- 0.2 mg/l
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.005 mg/l Minimum Reporting Level
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Sulfate 1055 EPA method 300.0
- Result
- 8.2 mg/l
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0003 mg/l Minimum Reporting Level
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- May 14, 2002
- Sampling point
- TF104 Treatment Plant T104
- Sample type
- Routine
- Lab sample
- 020515-002IN
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Barium 1010 EPA method 200.8
- Result
- 0.028 mg/l
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
-
Chromium 1020 EPA method 200.8
- Result
- 0.008 mg/l
-
Fluoride 1025 EPA method 300.0
- Result
- 0.11 mg/l
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.005 mg/l Minimum Reporting Level
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Sulfate 1055 EPA method 300.0
- Result
- 7.6 mg/l
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0003 mg/l Minimum Reporting Level
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- May 7, 2002
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 020508-052CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2002 – Dec 31, 2004
-
Cyanide 1024 EPA method 335.4
- Result
- Not detected below 0.01 mg/l Minimum Reporting Level
-
- Collected
- May 7, 2002
- Sampling point
- TF104 Treatment Plant T104
- Sample type
- Routine
- Lab sample
- 020508-051CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2002 – Dec 31, 2004
-
Cyanide 1024 EPA method 335.4
- Result
- Not detected below 0.01 mg/l Minimum Reporting Level
-
- Collected
- May 7, 2002
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 020508-050CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2002 – Dec 31, 2004
-
Cyanide 1024 EPA method 335.4
- Result
- Not detected below 0.01 mg/l Minimum Reporting Level
-
- Collected
- May 7, 2002
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 020508-049CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2002 – Dec 31, 2004
-
Cyanide 1024 EPA method 335.4
- Result
- Not detected below 0.01 mg/l Minimum Reporting Level
-
- Collected
- Apr 2, 2002
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- Not recorded
- Laboratory
- STL Billerica
- Monitoring period
- Not recorded
-
Asbestos 1094
- Result
- Not detected below 0.197 mfl Minimum Reporting Level
-
- Collected
- Jul 16, 2001
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 010717-001PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.121 mg/l
-
Lead 1030
- Result
- 0.007 mg/l
-
- Collected
- Jul 11, 2001
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 010712-058PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.07 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
Routine (10).