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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

MS0060048 , Port of Rosedale

23 of the 52 analytes this system has been tested for have been detected at least once, across 156 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 156 samples on record, detections range from August 24, 1993 to September 30, 2025. These figures cover the whole record; the list of samples further down is narrowed.

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 Port of Rosedale, 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 62 of 75 results Aug 24, 1993 Sep 30, 2025
Lead 1030 Inorganic Chemical 28 of 75 results Aug 24, 1993 Jun 15, 2022
Barium 1010 Inorganic Chemical 11 of 11 results Jul 2, 2002 Jan 15, 2025
Fluoride 1025 Inorganic Chemical 8 of 11 results Jul 2, 2002 Sep 19, 2018
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 6 of 8 results Jun 28, 2007 Feb 26, 2025
TTHM 2950 Organic Chemical 6 of 8 results May 3, 2004 Feb 26, 2025
Chromium 1020 Inorganic Chemical 4 of 11 results Feb 14, 2005 Jan 15, 2025
Nickel 1036 Inorganic Chemical 4 of 11 results Mar 12, 2008 May 4, 2022
Nitrite 1041 Inorganic Chemical 4 of 22 results Dec 2, 2013 Jan 30, 2019
Chloroform 2941 Organic Chemical 4 of 5 results Jun 28, 2007 Aug 20, 2014
Dichloroacetic Acid 2451 Organic Chemical 3 of 4 results Jul 13, 2011 Sep 6, 2017
Selenium 1045 Inorganic Chemical 3 of 11 results Jan 12, 2004 Mar 12, 2008
Bromodichloromethane 2943 Organic Chemical 2 of 5 results Jun 28, 2007 Jul 13, 2011
Dibromochloromethane 2944 Organic Chemical 2 of 5 results Jun 28, 2007 Jul 13, 2011
Sodium 1052 Inorganic Chemical 1 of 1 result Jan 27, 2021 Jan 27, 2021
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 22 results Dec 2, 2013 Dec 2, 2013
Nitrate 1040 Inorganic Chemical 1 of 22 results Dec 2, 2013 Dec 2, 2013
Xylenes, Total 2955 Organic Chemical 1 of 20 results Sep 29, 2011 Sep 29, 2011
Trichloroacetic Acid 2452 Organic Chemical 1 of 4 results Jul 13, 2011 Jul 13, 2011
Dibromoacetic Acid 2454 Organic Chemical 1 of 4 results Jul 13, 2011 Jul 13, 2011
Arsenic 1005 Inorganic Chemical 1 of 11 results Mar 12, 2008 Mar 12, 2008
Bromoform 2942 Organic Chemical 1 of 5 results Jun 28, 2007 Jun 28, 2007
Cadmium 1015 Inorganic Chemical 1 of 11 results Feb 14, 2005 Feb 14, 2005

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The 10 samples collected between September 25, 2024 and September 25, 2026 are listed below, newest first.

27 results from the 10 samples listed here: 9 detected, 18 not detected. 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 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 Port of Rosedale, every result from the 10 samples on record, 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
Sep 30, 2025 08:10
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-251007-015
Laboratory
MSDH Lab
0.0087 mg/l , sample collected Sep 30, 2025 08:10, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 08:10, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 30, 2025 09:10
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-251007-014
Laboratory
MSDH Lab
0.0087 mg/l , sample collected Sep 30, 2025 09:10, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:10, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 30, 2025 08:05
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-251007-013
Laboratory
MSDH Lab
0.0089 mg/l , sample collected Sep 30, 2025 08:05, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 08:05, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 30, 2025 09:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-251007-012
Laboratory
MSDH Lab
0.0103 mg/l , sample collected Sep 30, 2025 09:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 30, 2025 08:10
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-251007-011
Laboratory
MSDH Lab
0.0093 mg/l , sample collected Sep 30, 2025 08:10, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 08:10, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
May 21, 2025 10:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-250522-011
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 21, 2025 10:30, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Feb 26, 2025 11:45
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
TH-250227-005
Laboratory
MSDH Lab
13.2 ug/l , sample collected Feb 26, 2025 11:45, sampling point SMD TTHM 2950 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 26, 2025 12:10
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
HA-250227-005
Laboratory
MSDH Lab
6.02 ug/l , sample collected Feb 26, 2025 12:10, sampling point SMD Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 15, 2025 08:05
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250116-016
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 08:05, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0161 mg/l , sample collected Jan 15, 2025 08:05, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 08:05, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0012 mg/l , sample collected Jan 15, 2025 08:05, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 08:05, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 08:05, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 08:05, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 08:05, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 08:05, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 08:05, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 08:05, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 15, 2025 07:45
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-250116-002
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 07:45, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 07:45, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 15, 2025 07:45, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025

Routine (10).