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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 11–20 of 97 samples, newest first — collected July 7, 2021 to January 10, 2024. The summary above covers all 97.

28 results from the 10 samples listed here: 13 detected, 15 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.

We withheld the location of 5 sampling points 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 11 to 20 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
Jan 10, 2024 09:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
IN-240111-030
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 10, 2024 09:30, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.0184 mg/l , sample collected Jan 10, 2024 09:30, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 10, 2024 09:30, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 10, 2024 09:30, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 10, 2024 09:30, sampling point TF080 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 10, 2024 09:30, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.0006 mg/l , sample collected Jan 10, 2024 09:30, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jan 10, 2024 09:30, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 10, 2024 09:30, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 10, 2024 09:30, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 10, 2024 09:30, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
May 10, 2023 09:30
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
HA-230511-007
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 10, 2023 09:30, sampling point SMD Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2023
Collected
May 10, 2023 09:30
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
TH-230511-007
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 10, 2023 09:30, sampling point SMD TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Collected
Feb 27, 2023 08:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NI-230228-036
Laboratory
MSDH Lab
0.797 mg/l , sample collected Feb 27, 2023 08:00, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
0.797 mg/l , sample collected Feb 27, 2023 08:00, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 27, 2023 08:00, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Mar 2, 2022 14:40
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NA-220303-018
Laboratory
MSDH Lab
12 mg/l , sample collected Mar 2, 2022 14:40, sampling point TF080 Sodium 1052 EPA method 200.7 Not recorded
Collected
Mar 2, 2022 14:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NI-220303-016
Laboratory
MSDH Lab
0.662 mg/l , sample collected Mar 2, 2022 14:30, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
0.662 mg/l , sample collected Mar 2, 2022 14:30, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 2, 2022 14:30, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Jul 7, 2021 11:25
Sampling point
LC0008 Location withheld
Sample type
Routine
Lab sample
PB-210708-090
Laboratory
MSDH Lab
0.0077 mg/l , sample collected Jul 7, 2021 11:25, 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 11:25, sampling point LC0008 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 7, 2021 11:35
Sampling point
LC0002 Location withheld
Sample type
Routine
Lab sample
PB-210708-089
Laboratory
MSDH Lab
0.0197 mg/l , sample collected Jul 7, 2021 11:35, sampling point LC0002 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 11:35, sampling point LC0002 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 7, 2021 11:40
Sampling point
LC0009 Location withheld
Sample type
Routine
Lab sample
PB-210708-088
Laboratory
MSDH Lab
0.0647 mg/l , sample collected Jul 7, 2021 11:40, sampling point LC0009 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
3.7 ug/l , sample collected Jul 7, 2021 11:40, sampling point LC0009 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 7, 2021 11:55
Sampling point
LC0010 Location withheld
Sample type
Routine
Lab sample
PB-210708-087
Laboratory
MSDH Lab
0.0309 mg/l , sample collected Jul 7, 2021 11:55, sampling point LC0010 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.8 ug/l , sample collected Jul 7, 2021 11:55, sampling point LC0010 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021

Routine (10).