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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.

Every analyte ever detected for Olin Winchester-Oxford, with how many results found it and when it was first and last detected. Covers the whole record, not only 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 21–30 of 97 samples, newest first — collected July 23, 2018 to July 7, 2021. The summary above covers all 97.

49 results from the 10 samples listed here: 11 detected, 38 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.

Units in this table

Lead is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

We withheld the location of 1 sampling point below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for Olin Winchester-Oxford, every result from 21 to 30 of 97 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Jul 7, 2021 11:15
Sampling point
LC0008 Location withheld
Sample type
Routine
Lab sample
PB-210708-091
Laboratory
MSDH Lab
0.0085 mg/l , sample collected Jul 7, 2021 11:15, sampling point LC0008 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 7, 2021 11:15, sampling point LC0008 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Feb 10, 2021 13:15
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
CN-210211-006
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Feb 10, 2021 13:15, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2019 – Dec 31, 2021
Collected
Apr 22, 2020 15:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
200423-035IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.0236 mg/l , sample collected Apr 22, 2020 15:30, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF080 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Mar 18, 2020 13:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
200319-009NI
Laboratory
MSDH Lab
0.61 mg/l , sample collected Mar 18, 2020 13:00, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
0.61 mg/l , sample collected Mar 18, 2020 13:00, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 18, 2020 13:00, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Collected
Apr 3, 2019 12:45
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
190404-014NI
Laboratory
MSDH Lab
0.55 mg/l , sample collected Apr 3, 2019 12:45, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
0.55 mg/l , sample collected Apr 3, 2019 12:45, 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 Apr 3, 2019 12:45, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Collected
Sep 12, 2018 14:05
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
180913-015VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Benzene 2990 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Toluene 2991 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 14:05, sampling point TF080 Styrene 2996 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Collected
Jul 23, 2018 04:40
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180724-023PB
Laboratory
MSDH Lab
0.0241 mg/l , sample collected Jul 23, 2018 04:40, 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 23, 2018 04:40, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Jul 23, 2018 04:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180724-022PB
Laboratory
MSDH Lab
0.0202 mg/l , sample collected Jul 23, 2018 04:30, 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 23, 2018 04:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Jul 23, 2018 04:35
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180724-021PB
Laboratory
MSDH Lab
0.0117 mg/l , sample collected Jul 23, 2018 04:35, 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 23, 2018 04:35, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Jul 23, 2018 04:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180724-020PB
Laboratory
MSDH Lab
0.0282 mg/l , sample collected Jul 23, 2018 04:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0029 mg/l , sample collected Jul 23, 2018 04:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018

Routine (10).