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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

MS0340003 , City of Ellisville

41 of the 69 analytes this system has been tested for have been detected at least once, across 480 samples on record.

The other 28 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 480 samples on record, detections range from September 29, 2003 to August 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 City of Ellisville, 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 137 of 140 results Jun 24, 2004 Jul 24, 2024
Lead 1030 Inorganic Chemical 135 of 141 results Jun 24, 2004 Jul 24, 2024
Fluoride 1025 Inorganic Chemical 33 of 36 results Sep 29, 2003 Feb 7, 2024
TTHM 2950 Organic Chemical 32 of 37 results Jun 16, 2004 Aug 25, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 30 of 35 results Sep 21, 2009 Aug 25, 2025
Barium 1010 Inorganic Chemical 30 of 30 results Sep 29, 2003 Feb 7, 2024
Chloroform 2941 Organic Chemical 28 of 28 results Sep 5, 2007 Aug 25, 2025
Bromodichloromethane 2943 Organic Chemical 28 of 28 results Sep 5, 2007 Aug 25, 2025
Trichloroacetic Acid 2452 Organic Chemical 25 of 26 results Sep 21, 2009 Aug 25, 2025
Dichloroacetic Acid 2451 Organic Chemical 24 of 26 results Sep 21, 2009 Aug 25, 2025
Xylenes, Total 2955 Organic Chemical 21 of 96 results Mar 14, 2006 Jul 16, 2015
Sodium 1052 Inorganic Chemical 17 of 17 results Apr 20, 2010 Feb 25, 2025
Nickel 1036 Inorganic Chemical 13 of 30 results Sep 29, 2003 Jan 10, 2024
Chromium 1020 Inorganic Chemical 11 of 30 results Sep 29, 2003 Feb 7, 2024
Dibromochloromethane 2944 Organic Chemical 8 of 28 results Jul 28, 2010 Aug 25, 2025
Sulfate 1055 Inorganic Chemical 8 of 8 results Sep 29, 2003 Feb 27, 2018
Calcium 1016 Inorganic Chemical 6 of 6 results Apr 20, 2010 Feb 27, 2018
Magnesium 1031 Inorganic Chemical 6 of 6 results Apr 20, 2010 Feb 27, 2018
Potassium 1042 Inorganic Chemical 6 of 6 results Apr 20, 2010 Feb 27, 2018
Residue, Total, Filterable 1057 Water Quality 6 of 6 results Apr 20, 2010 Feb 27, 2018
Color 1905 Water Quality 6 of 6 results Apr 20, 2010 Feb 27, 2018
Hardness, Total (As Caco3) 1915 Water Quality 6 of 6 results Apr 20, 2010 Feb 27, 2018
Alkalinity, Total 1927 Water Quality 6 of 6 results Apr 20, 2010 Feb 27, 2018
Calculated Sodium NACA Water Quality 6 of 6 results Apr 20, 2010 Feb 27, 2018
PH, Field Result PHFD Water Quality 6 of 6 results Apr 20, 2010 Feb 27, 2018
Iron 1028 Inorganic Chemical 5 of 6 results Apr 20, 2010 Feb 27, 2018
Manganese 1032 Inorganic Chemical 5 of 5 results Apr 20, 2010 Feb 27, 2018
Carbon Dioxide 1901 Water Quality 5 of 5 results Apr 20, 2010 Feb 27, 2018
Ethylbenzene 2992 Organic Chemical 5 of 96 results Mar 14, 2006 Aug 17, 2011
Selenium 1045 Inorganic Chemical 4 of 30 results Dec 12, 2005 May 1, 2008
Monochloroacetic Acid 2450 Organic Chemical 3 of 26 results Sep 21, 2009 Jun 27, 2018
Chloride 1017 Inorganic Chemical 3 of 6 results Apr 20, 2010 Feb 27, 2018
Iron, Field Result FEFD Inorganic Chemical 3 of 3 results Apr 20, 2010 Feb 27, 2018
Arsenic 1005 Inorganic Chemical 2 of 30 results Dec 12, 2005 Apr 2, 2014
Combined Uranium 4006 Radionuclide 2 of 16 results Mar 12, 2012 May 21, 2012
Toluene 2991 Organic Chemical 2 of 96 results Mar 14, 2006 May 21, 2007
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Feb 27, 2018 Feb 27, 2018
Cyanide 1024 Inorganic Chemical 1 of 33 results Mar 3, 2014 Mar 3, 2014
Monobromoacetic Acid 2453 Organic Chemical 1 of 26 results Feb 29, 2012 Feb 29, 2012
Cadmium 1015 Inorganic Chemical 1 of 30 results Dec 12, 2005 Dec 12, 2005
Dichloromethane 2964 Organic Chemical 1 of 96 results Aug 3, 2004 Aug 3, 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 101–110 of 480 samples, newest first — collected May 12, 2021 to June 16, 2021. The summary above covers all 480.

10 results from the 10 samples listed here: 2 detected, 8 not detected. Across the whole record it is 678 of 3,354. 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 City of Ellisville, every result from 101 to 110 of 480 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
Jun 16, 2021 13:30
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
HA-210617-002
Laboratory
MSDH Lab
3.64 ug/l , sample collected Jun 16, 2021 13:30, sampling point SMH Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2021
Collected
Jun 16, 2021 13:40
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
TH-210617-002
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 16, 2021 13:40, sampling point SMH TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Jun 16, 2021 14:10
Sampling point
SMT Charlie's Catfish
Sample type
Routine
Lab sample
TH-210617-003
Laboratory
MSDH Lab
1.29 ug/l , sample collected Jun 16, 2021 14:10, sampling point SMT TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Jun 9, 2021 13:30
Sampling point
TF104 TF104
Sample type
Routine
Lab sample
CN-210610-006
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 9, 2021 13:30, sampling point TF104 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Jun 9, 2021 13:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-210610-007
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 9, 2021 13:15, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Jun 9, 2021 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
CN-210610-008
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 9, 2021 13:00, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
May 12, 2021 13:10
Sampling point
TF104 TF104
Sample type
Routine
Lab sample
RU-210513-003
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2021 13:10, sampling point TF104 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
May 12, 2021 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
RU-210513-002
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2021 13:00, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
May 12, 2021 12:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
RU-210513-001
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2021 12:40, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
May 12, 2021 13:30
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
RU-210513-004
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2021 13:30, sampling point TF103 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021

Routine (10).