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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.

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

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 156 samples, newest first — collected June 15, 2022 to February 6, 2024. The summary above covers all 156.

39 results from the 10 samples listed here: 10 detected, 29 not detected. Across the whole record it is 156 of 828. 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 11 to 20 of 156 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
Feb 6, 2024 10:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-240207-041
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 6, 2024 10:15, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 6, 2024 10:15, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 6, 2024 10:15, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Collected
Mar 13, 2023 07:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
VO-230314-010
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 13, 2023 07:15, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Collected
Feb 13, 2023 07:45
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-230214-014
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 13, 2023 07:45, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 13, 2023 07:45, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 13, 2023 07:45, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Sep 29, 2022 10:00
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
TH-220930-001
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 29, 2022 10:00, sampling point SMD TTHM 2950 EPA method 524.2 Jan 1, 2020 – Dec 31, 2022
Collected
Sep 29, 2022 10:15
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
HA-220930-001
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 29, 2022 10:15, sampling point SMD Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 15, 2022 10:10
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220616-050
Laboratory
MSDH Lab
0.139 mg/l , sample collected Jun 15, 2022 10:10, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
1.8 ug/l , sample collected Jun 15, 2022 10:10, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 15, 2022 07:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220616-049
Laboratory
MSDH Lab
0.154 mg/l , sample collected Jun 15, 2022 07:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
1.2 ug/l , sample collected Jun 15, 2022 07:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 15, 2022 08:05
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220616-048
Laboratory
MSDH Lab
0.219 mg/l , sample collected Jun 15, 2022 08:05, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
1.1 ug/l , sample collected Jun 15, 2022 08:05, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 15, 2022 06:50
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220616-047
Laboratory
MSDH Lab
0.163 mg/l , sample collected Jun 15, 2022 06:50, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
4.9 ug/l , sample collected Jun 15, 2022 06:50, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 15, 2022 07:40
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220616-046
Laboratory
MSDH Lab
0.208 mg/l , sample collected Jun 15, 2022 07:40, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
1 ug/l , sample collected Jun 15, 2022 07:40, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022

Routine (10).