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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

MS0490022 , Stewart Water Assc #2

22 of the 57 analytes this system has been tested for have been detected at least once, across 142 samples on record.

The other 35 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 142 samples on record, detections range from October 8, 2003 to March 19, 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 Stewart Water Assc #2, 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 60 of 60 results Sep 14, 2004 Aug 27, 2024
Lead 1030 Inorganic Chemical 55 of 60 results Sep 14, 2004 Aug 27, 2024
Barium 1010 Inorganic Chemical 10 of 10 results Oct 8, 2003 Mar 19, 2025
Fluoride 1025 Inorganic Chemical 9 of 10 results Oct 8, 2003 Mar 19, 2025
TTHM 2950 Organic Chemical 7 of 7 results Jul 21, 2004 Feb 25, 2025
Chromium 1020 Inorganic Chemical 6 of 10 results Mar 10, 2004 May 8, 2019
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 5 of 7 results Jun 16, 2010 Feb 25, 2025
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 24, 2019 Feb 25, 2025
Nickel 1036 Inorganic Chemical 3 of 10 results Apr 29, 2013 Sep 27, 2022
Dichloroacetic Acid 2451 Organic Chemical 3 of 4 results Aug 27, 2007 Jul 11, 2016
Trichloroacetic Acid 2452 Organic Chemical 3 of 4 results Aug 27, 2007 Jul 11, 2016
Dibromoacetic Acid 2454 Organic Chemical 3 of 4 results Aug 27, 2007 Jul 11, 2016
Chloroform 2941 Organic Chemical 3 of 4 results Aug 27, 2007 Jul 11, 2016
Bromodichloromethane 2943 Organic Chemical 3 of 4 results Aug 27, 2007 Jul 11, 2016
Dibromochloromethane 2944 Organic Chemical 3 of 4 results Aug 27, 2007 Jul 11, 2016
Arsenic 1005 Inorganic Chemical 2 of 10 results May 8, 2019 Sep 27, 2022
Radium-226 4020 Radionuclide 2 of 7 results Jun 25, 2018 Sep 10, 2019
Bromoform 2942 Organic Chemical 2 of 4 results Aug 27, 2007 Aug 12, 2013
Nitrite 1041 Inorganic Chemical 2 of 22 results Nov 21, 2005 May 13, 2009
Selenium 1045 Inorganic Chemical 2 of 10 results Mar 10, 2004 Mar 8, 2006
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 7 results Sep 10, 2019 Sep 10, 2019
Radium-228 4030 Radionuclide 1 of 7 results Sep 10, 2019 Sep 10, 2019

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 142 samples, newest first — collected October 15, 2019 to March 1, 2022. The summary above covers all 142.

23 results from the 10 samples listed here: 10 detected, 13 not detected. Across the whole record it is 188 of 604. 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 3 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 Stewart Water Assc #2, every result from 21 to 30 of 142 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
Mar 1, 2022 13:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-220302-008
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 13:40, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 13:40, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 13:40, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Aug 3, 2021 09:27
Sampling point
LC0002 Location withheld
Sample type
Routine
Lab sample
PB-210804-045
Laboratory
MSDH Lab
0.0037 mg/l , sample collected Aug 3, 2021 09:27, sampling point LC0002 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.6 ug/l , sample collected Aug 3, 2021 09:27, sampling point LC0002 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Aug 3, 2021 06:50
Sampling point
LC0002 Location withheld
Sample type
Routine
Lab sample
PB-210804-044
Laboratory
MSDH Lab
0.432 mg/l , sample collected Aug 3, 2021 06:50, sampling point LC0002 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.7 ug/l , sample collected Aug 3, 2021 06:50, sampling point LC0002 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Aug 3, 2021 03:00
Sampling point
LC0004 Location withheld
Sample type
Routine
Lab sample
PB-210804-043
Laboratory
MSDH Lab
0.183 mg/l , sample collected Aug 3, 2021 03:00, sampling point LC0004 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
1.2 ug/l , sample collected Aug 3, 2021 03:00, sampling point LC0004 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Aug 3, 2021 06:15
Sampling point
LC0006 Location withheld
Sample type
Routine
Lab sample
PB-210804-042
Laboratory
MSDH Lab
0.0371 mg/l , sample collected Aug 3, 2021 06:15, sampling point LC0006 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
3.9 ug/l , sample collected Aug 3, 2021 06:15, sampling point LC0006 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Aug 3, 2021 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210804-041
Laboratory
MSDH Lab
0.0575 mg/l , sample collected Aug 3, 2021 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
2.5 ug/l , sample collected Aug 3, 2021 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Mar 30, 2021 13:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-210331-014
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 30, 2021 13:40, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 30, 2021 13:40, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 30, 2021 13:40, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Collected
Apr 7, 2020 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
200408-007NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 7, 2020 13:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 7, 2020 13:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 7, 2020 13:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Collected
Nov 19, 2019 13:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
191120-008NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 19, 2019 13:30, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 19, 2019 13:30, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 19, 2019 13:30, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Collected
Oct 15, 2019 13:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
191016-009CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 15, 2019 13:15, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019

Routine (10).