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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

MS0060016 , City of Rosedale

21 of the 57 analytes this system has been tested for have been detected at least once, across 240 samples on record.

The other 36 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 240 samples on record, detections range from October 19, 1993 to November 6, 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 City 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 123 of 153 results Oct 19, 1993 Aug 30, 2025
Lead 1030 Inorganic Chemical 117 of 153 results Oct 19, 1993 Aug 30, 2025
Barium 1010 Inorganic Chemical 13 of 13 results Jun 25, 2002 May 5, 2025
Fluoride 1025 Inorganic Chemical 13 of 13 results Jun 25, 2002 May 5, 2025
TTHM 2950 Organic Chemical 9 of 11 results Jun 4, 2007 Nov 6, 2025
Chromium 1020 Inorganic Chemical 8 of 13 results Jun 25, 2002 May 5, 2025
Selenium 1045 Inorganic Chemical 8 of 13 results Jan 12, 2004 May 5, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 8 of 10 results Jun 4, 2007 Mar 6, 2024
Chloroform 2941 Organic Chemical 7 of 8 results Jun 4, 2007 Nov 6, 2025
Arsenic 1005 Inorganic Chemical 7 of 13 results Mar 10, 2008 May 5, 2025
Bromoform 2942 Organic Chemical 4 of 8 results Jun 4, 2007 Jul 28, 2020
Bromodichloromethane 2943 Organic Chemical 4 of 8 results Jun 4, 2007 Jul 28, 2020
Dibromochloromethane 2944 Organic Chemical 4 of 8 results Jun 4, 2007 Jul 28, 2020
Dichloroacetic Acid 2451 Organic Chemical 4 of 6 results Jun 25, 2008 Jul 26, 2017
Nickel 1036 Inorganic Chemical 2 of 13 results Mar 10, 2008 May 5, 2025
Sodium 1052 Inorganic Chemical 2 of 2 results Jan 20, 2021 Oct 21, 2024
Trichloroacetic Acid 2452 Organic Chemical 2 of 6 results Jul 2, 2014 Jul 28, 2020
Cadmium 1015 Inorganic Chemical 2 of 13 results Feb 14, 2005 Mar 10, 2008
Nitrite 1041 Inorganic Chemical 1 of 21 results Feb 7, 2018 Feb 7, 2018
Monochloroacetic Acid 2450 Organic Chemical 1 of 6 results Jul 26, 2017 Jul 26, 2017
Dibromoacetic Acid 2454 Organic Chemical 1 of 6 results Jul 2, 2014 Jul 2, 2014

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 240 samples, newest first — collected July 26, 2022 to May 30, 2023. The summary above covers all 240.

19 results from the 10 samples listed here: 15 detected, 4 not detected. Across the whole record it is 340 of 846. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Chemical and radiological sample results for City of Rosedale, every result from 21 to 30 of 240 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
May 30, 2023 12:50
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-230531-005
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 30, 2023 12:50, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded
Collected
May 30, 2023 12:50
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-230531-005
Laboratory
MSDH Lab
2.06 ug/l , sample collected May 30, 2023 12:50, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Feb 28, 2023 17:20
Sampling point
TF102 TF102
Sample type
Routine
Lab sample
NI-230301-062
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 28, 2023 17:20, sampling point TF102 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 28, 2023 17:20, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 28, 2023 17:20, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Jul 26, 2022 06:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220728-070
Laboratory
MSDH Lab
0.49 mg/l , sample collected Jul 26, 2022 06:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
5 ug/l , sample collected Jul 26, 2022 06:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 26, 2022 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220728-069
Laboratory
MSDH Lab
0.0064 mg/l , sample collected Jul 26, 2022 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
4.7 ug/l , sample collected Jul 26, 2022 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 26, 2022 06:37
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220728-068
Laboratory
MSDH Lab
0.0095 mg/l , sample collected Jul 26, 2022 06:37, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
4.3 ug/l , sample collected Jul 26, 2022 06:37, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 26, 2022 08:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220728-067
Laboratory
MSDH Lab
0.0372 mg/l , sample collected Jul 26, 2022 08:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
1.5 ug/l , sample collected Jul 26, 2022 08:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 26, 2022 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220728-066
Laboratory
MSDH Lab
0.918 mg/l , sample collected Jul 26, 2022 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
2 ug/l , sample collected Jul 26, 2022 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 26, 2022 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220728-065
Laboratory
MSDH Lab
0.361 mg/l , sample collected Jul 26, 2022 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
3.2 ug/l , sample collected Jul 26, 2022 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 26, 2022 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220728-064
Laboratory
MSDH Lab
0.194 mg/l , sample collected Jul 26, 2022 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.7 ug/l , sample collected Jul 26, 2022 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022

Routine (10).