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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

MS0490009 , Stewart Water Association

24 of the 57 analytes this system has been tested for have been detected at least once, across 128 samples on record.

The other 33 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 128 samples on record, detections range from October 8, 2003 to February 25, 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 Association, 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 Sep 22, 2004 Sep 20, 2023
Lead 1030 Inorganic Chemical 23 of 36 results Sep 22, 2004 Jul 21, 2020
Barium 1010 Inorganic Chemical 10 of 10 results Oct 8, 2003 Jan 10, 2024
Fluoride 1025 Inorganic Chemical 8 of 10 results Oct 8, 2003 Jan 10, 2024
Chromium 1020 Inorganic Chemical 7 of 10 results Oct 8, 2003 Jan 10, 2024
Gross Alpha, Incl. Radon & U 4002 Radionuclide 7 of 7 results Dec 12, 2011 Sep 10, 2019
TTHM 2950 Organic Chemical 6 of 7 results Aug 27, 2007 Feb 25, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 5 of 7 results Jun 16, 2010 Feb 25, 2025
Dichloroacetic Acid 2451 Organic Chemical 4 of 4 results Aug 27, 2007 Jul 5, 2016
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 24, 2019 Feb 25, 2025
Chloroform 2941 Organic Chemical 3 of 4 results Aug 27, 2007 Jul 5, 2016
Bromodichloromethane 2943 Organic Chemical 3 of 4 results Aug 27, 2007 Jul 5, 2016
Combined Radium (-226 & -228) 4010 Radionuclide 2 of 7 results Jun 25, 2018 Sep 10, 2019
Radium-226 4020 Radionuclide 2 of 7 results Jun 25, 2018 Sep 10, 2019
Dibromoacetic Acid 2454 Organic Chemical 2 of 4 results Aug 12, 2013 Jul 5, 2016
Dibromochloromethane 2944 Organic Chemical 2 of 4 results Aug 12, 2013 Jul 5, 2016
Xylenes, Total 2955 Organic Chemical 2 of 19 results Aug 9, 2010 Aug 22, 2011
Arsenic 1005 Inorganic Chemical 1 of 10 results Apr 28, 2020 Apr 28, 2020
Radium-228 4030 Radionuclide 1 of 7 results Sep 10, 2019 Sep 10, 2019
Trichloroacetic Acid 2452 Organic Chemical 1 of 4 results Jul 5, 2016 Jul 5, 2016
Nickel 1036 Inorganic Chemical 1 of 10 results Mar 31, 2014 Mar 31, 2014
Bromoform 2942 Organic Chemical 1 of 4 results Aug 12, 2013 Aug 12, 2013
Cyanide 1024 Inorganic Chemical 1 of 9 results May 2, 2011 May 2, 2011
Selenium 1045 Inorganic Chemical 1 of 10 results Mar 9, 2004 Mar 9, 2004

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 128 samples, newest first — collected September 10, 2019 to July 21, 2020. The summary above covers all 128.

50 results from the 10 samples listed here: 14 detected, 36 not detected. Across the whole record it is 132 of 750. 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 Stewart Water Association, every result from 21 to 30 of 128 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
Jul 21, 2020 06:40
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200722-099PB
Laboratory
MSDH Lab
0.0459 mg/l , sample collected Jul 21, 2020 06:40, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0009 mg/l , sample collected Jul 21, 2020 06:40, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jul 21, 2020 05:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200722-098PB
Laboratory
MSDH Lab
0.1426 mg/l , sample collected Jul 21, 2020 05:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 21, 2020 05:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jul 21, 2020 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200722-097PB
Laboratory
MSDH Lab
0.1028 mg/l , sample collected Jul 21, 2020 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0006 mg/l , sample collected Jul 21, 2020 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jul 21, 2020 06:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200722-096PB
Laboratory
MSDH Lab
0.0645 mg/l , sample collected Jul 21, 2020 06:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 21, 2020 06:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jun 2, 2020 13:05
Sampling point
TF103
Sample type
Routine
Lab sample
200603-008VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Dichloromethane 2964 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Benzene 2990 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Toluene 2991 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2020 13:05, sampling point TF103 Styrene 2996 EPA method 524.2 Jan 1, 2016 – Dec 31, 2021
Collected
Apr 28, 2020 13:15
Sampling point
TF103
Sample type
Routine
Lab sample
200429-052IN
Laboratory
MSDH Lab
0.0007 mg/l , sample collected Apr 28, 2020 13:15, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.0094 mg/l , sample collected Apr 28, 2020 13:15, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 28, 2020 13:15, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.0028 mg/l , sample collected Apr 28, 2020 13:15, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.255 mg/l , sample collected Apr 28, 2020 13:15, sampling point TF103 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 28, 2020 13:15, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 28, 2020 13:15, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 28, 2020 13:15, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 28, 2020 13:15, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 28, 2020 13:15, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 28, 2020 13:15, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Apr 7, 2020 13:45
Sampling point
TF103
Sample type
Routine
Lab sample
200408-005NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 7, 2020 13:45, sampling point TF103 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 13:45, sampling point TF103 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 13:45, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Collected
Nov 19, 2019 13:00
Sampling point
TF103
Sample type
Routine
Lab sample
191120-009NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 19, 2019 13:00, sampling point TF103 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 13:00, sampling point TF103 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 13:00, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Collected
Sep 24, 2019 09:30
Sampling point
TF103
Sample type
Routine
Lab sample
680-175396-39
Laboratory
Test America-Savannah
150000 ug/l , sample collected Sep 24, 2019 09:30, sampling point TF103 Sodium 1052 EPA method 200.7 Not recorded
Collected
Sep 10, 2019 09:45
Sampling point
TF103
Sample type
Routine
Lab sample
4418127
Laboratory
Eurofins Eaton Analytical South Bend in
0.98 pci/l , sample collected Sep 10, 2019 09:45, sampling point TF103 Combined Radium (-226 & -228) 4010 EPA method 7500-RA Not recorded
0.4 pci/l , sample collected Sep 10, 2019 09:45, sampling point TF103 Radium-226 4020 EPA method 7500-RAB Jan 1, 2019 – Dec 31, 2024
0.58 pci/l , sample collected Sep 10, 2019 09:45, sampling point TF103 Radium-228 4030 EPA method 7500-RAD Jan 1, 2019 – Dec 31, 2024

Routine (10).