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
MS0360039 , Olin Winchester-Oxford
14 of the 51 analytes this system has been tested for have been detected at least once, across 97 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 97 samples on record, detections range from September 29, 2003 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 | 36 of 36 results | Aug 13, 2009 | Aug 21, 2024 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 20 of 20 results | Jul 10, 2006 | Feb 11, 2026 |
| Nitrate 1040 | Inorganic Chemical | 20 of 20 results | Jul 10, 2006 | Feb 11, 2026 |
| Lead 1030 | Inorganic Chemical | 12 of 36 results | Aug 13, 2009 | Jul 7, 2021 |
| Barium 1010 | Inorganic Chemical | 7 of 7 results | Sep 29, 2003 | Jan 10, 2024 |
| Nickel 1036 | Inorganic Chemical | 5 of 7 results | Sep 29, 2003 | Jan 10, 2024 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 4 of 6 results | Jun 14, 2007 | Aug 7, 2017 |
| TTHM 2950 | Organic Chemical | 3 of 6 results | Jun 14, 2007 | Jun 14, 2011 |
| Monochloroacetic Acid 2450 | Organic Chemical | 2 of 4 results | Jul 14, 2014 | Aug 7, 2017 |
| Dichloroacetic Acid 2451 | Organic Chemical | 2 of 4 results | Jun 30, 2008 | Jun 14, 2011 |
| Chloroform 2941 | Organic Chemical | 2 of 5 results | Jun 30, 2008 | Jun 14, 2011 |
| Bromodichloromethane 2943 | Organic Chemical | 2 of 5 results | Jun 30, 2008 | Jun 14, 2011 |
| Sodium 1052 | Inorganic Chemical | 1 of 1 result | Mar 2, 2022 | Mar 2, 2022 |
| Dibromochloromethane 2944 | Organic Chemical | 1 of 5 results | Jun 30, 2008 | Jun 30, 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 51–60 of 97 samples, newest first — collected June 4, 2013 to July 14, 2014. The summary above covers all 97.
36 results from the 10 samples listed here: 13 detected, 23 not detected. Across the whole record it is 117 of 564. 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 |
|---|---|---|
|
||
| 0.003 mg/l , sample collected Jul 14, 2014 02:34, 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, 2014 02:34, 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, 2014 02:34, 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, 2014 02:34, 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, 2014 02:34, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.003 mg/l , sample collected Jul 14, 2014 02:34, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2012 – Dec 31, 2014 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 14, 2014 02:33, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 14, 2014 02:33, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 14, 2014 02:33, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 14, 2014 02:33, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| Not detected below 4 ug/l Minimum Reporting Level , sample collected Jul 14, 2014 02:33, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2012 – Dec 31, 2014 |
|
||
| 0.34 mg/l , sample collected Apr 9, 2014 13:30, sampling point TF080 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2014 – Dec 31, 2014 |
| 0.34 mg/l , sample collected Apr 9, 2014 13:30, sampling point TF080 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2014 – Dec 31, 2014 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 9, 2014 13:30, sampling point TF080 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2014 – Dec 31, 2014 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 12:46, sampling point TF080 | Arsenic 1005 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| 0.0179 mg/l , sample collected Mar 31, 2014 12:46, sampling point TF080 | Barium 1010 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 12:46, sampling point TF080 | Cadmium 1015 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 12:46, sampling point TF080 | Chromium 1020 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 12:46, sampling point TF080 | Fluoride 1025 EPA method 300.0 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 12:46, sampling point TF080 | Mercury 1035 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| 0.0018 mg/l , sample collected Mar 31, 2014 12:46, sampling point TF080 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 12:46, sampling point TF080 | Selenium 1045 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 12:46, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 12:46, sampling point TF080 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 12:46, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Mar 3, 2014 02:15, sampling point TF080 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2013 – Dec 31, 2015 |
|
||
| 0.1383 mg/l , sample collected Jun 4, 2013 08:13, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.0133 mg/l , sample collected Jun 4, 2013 08:13, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
|
||
| 0.0593 mg/l , sample collected Jun 4, 2013 07:49, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 4, 2013 07:49, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
|
||
| 0.021 mg/l , sample collected Jun 4, 2013 07:53, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 4, 2013 07:53, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
|
||
| 0.0356 mg/l , sample collected Jun 4, 2013 08:16, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 4, 2013 08:16, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
|
||
| 0.009 mg/l , sample collected Jun 4, 2013 08:07, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.003 mg/l , sample collected Jun 4, 2013 08:07, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
-
- Collected
- Jul 14, 2014 02:34
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 140715-023HA
- Laboratory
- MSDH Lab
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- 0.003 mg/l
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.003 mg/l
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
-
- Collected
- Jul 14, 2014 02:33
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 140715-023TH
- 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
- Not detected below 1 ug/l Minimum Reporting Level
- 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
- Not detected below 4 ug/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
-
- Collected
- Apr 9, 2014 13:30
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 140410-021NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2014 – Dec 31, 2014
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- 0.34 mg/l
-
Nitrate 1040 EPA method QC10107041C
- Result
- 0.34 mg/l
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Mar 31, 2014 12:46
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 140401-078IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Barium 1010 EPA method 200.8
- Result
- 0.0179 mg/l
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Chromium 1020 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Fluoride 1025 EPA method 300.0
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Nickel 1036 EPA method 200.8
- Result
- 0.0018 mg/l
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0025 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
- Collected
- Mar 3, 2014 02:15
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 140304-025CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Jun 4, 2013 08:13
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 130605-081PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1383 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0133 mg/l
-
- Collected
- Jun 4, 2013 07:49
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 130605-025PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0593 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 4, 2013 07:53
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 130605-024PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.021 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 4, 2013 08:16
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 130605-018PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0356 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 4, 2013 08:07
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 130605-017PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.009 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.003 mg/l
Routine (10).