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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

MS0460003 , City of Columbia

38 of the 73 analytes this system has been tested for have been detected at least once, across 396 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 396 samples on record, detections range from October 8, 2003 to March 27, 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 Columbia, 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 300 of 301 results Jun 15, 2004 Aug 17, 2024
Lead 1030 Inorganic Chemical 116 of 301 results Sep 6, 2007 Aug 17, 2024
Nitrate-Nitrite 1038 Inorganic Chemical 21 of 22 results Jun 7, 2004 Mar 27, 2025
Nitrate 1040 Inorganic Chemical 21 of 22 results Jun 7, 2004 Mar 27, 2025
Barium 1010 Inorganic Chemical 9 of 9 results Oct 8, 2003 Mar 27, 2025
Fluoride 1025 Inorganic Chemical 8 of 10 results Oct 8, 2003 Apr 16, 2019
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 6 of 20 results Aug 21, 2007 May 9, 2023
TTHM 2950 Organic Chemical 5 of 20 results Jul 14, 2004 Sep 9, 2019
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Mar 15, 2012 Oct 12, 2012
Chromium 1020 Inorganic Chemical 4 of 9 results Jul 11, 2012 Mar 27, 2025
Nickel 1036 Inorganic Chemical 3 of 9 results Mar 8, 2004 Mar 27, 2025
Sodium 1052 Inorganic Chemical 3 of 3 results Jun 16, 2017 Feb 26, 2025
Chloroform 2941 Organic Chemical 3 of 15 results Aug 21, 2007 Sep 9, 2019
Monobromoacetic Acid 2453 Organic Chemical 2 of 14 results Sep 18, 2019 Sep 30, 2020
Bromodichloromethane 2943 Organic Chemical 2 of 15 results Aug 21, 2007 Dec 19, 2016
Dibromochloromethane 2944 Organic Chemical 2 of 15 results Aug 21, 2007 Dec 19, 2016
Gross Alpha, Excl. Radon & U 4000 Radionuclide 2 of 2 results Sep 16, 2009 Mar 15, 2010
Combined Radium (-226 & -228) 4010 Radionuclide 2 of 7 results Sep 16, 2009 Mar 15, 2010
Radium-226 4020 Radionuclide 2 of 7 results Sep 16, 2009 Mar 15, 2010
Gross Beta Particle Activity 4100 Radionuclide 2 of 2 results Sep 16, 2009 Mar 15, 2010
Gross Alpha Particle Activity 4109 Radionuclide 2 of 2 results Sep 16, 2009 Mar 15, 2010
Monochloroacetic Acid 2450 Organic Chemical 1 of 14 results Sep 18, 2019 Sep 18, 2019
Dichloroacetic Acid 2451 Organic Chemical 1 of 14 results Sep 18, 2019 Sep 18, 2019
Calcium 1016 Inorganic Chemical 1 of 1 result Jun 16, 2017 Jun 16, 2017
Chloride 1017 Inorganic Chemical 1 of 1 result Jun 16, 2017 Jun 16, 2017
Iron 1028 Inorganic Chemical 1 of 1 result Jun 16, 2017 Jun 16, 2017
Magnesium 1031 Inorganic Chemical 1 of 1 result Jun 16, 2017 Jun 16, 2017
Manganese 1032 Inorganic Chemical 1 of 1 result Jun 16, 2017 Jun 16, 2017
Potassium 1042 Inorganic Chemical 1 of 1 result Jun 16, 2017 Jun 16, 2017
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Jun 16, 2017 Jun 16, 2017
Carbon Dioxide 1901 Water Quality 1 of 1 result Jun 16, 2017 Jun 16, 2017
Color 1905 Water Quality 1 of 1 result Jun 16, 2017 Jun 16, 2017
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Jun 16, 2017 Jun 16, 2017
Alkalinity, Total 1927 Water Quality 1 of 1 result Jun 16, 2017 Jun 16, 2017
Calculated Sodium NACA Water Quality 1 of 1 result Jun 16, 2017 Jun 16, 2017
PH, Field Result PHFD Water Quality 1 of 1 result Jun 16, 2017 Jun 16, 2017
Selenium 1045 Inorganic Chemical 1 of 9 results Jan 13, 2010 Jan 13, 2010
Radium-228 4030 Radionuclide 1 of 7 results Sep 16, 2009 Sep 16, 2009

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 1–10 of 396 samples, newest first — collected December 11, 2024 to December 11, 2025. The summary above covers all 396.

82 results from the 10 samples listed here: 6 detected, 76 not detected. Across the whole record it is 537 of 1,154. 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 2 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 City of Columbia, every result from 1 to 10 of 396 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
Dec 11, 2025 08:30
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-175146-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 11, 2025 08:30, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 11, 2025 08:30, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 11, 2025 08:30, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 11, 2025 08:30, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 11, 2025 08:30, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 11, 2025 08:30, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 11, 2025 08:30, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 11, 2025 08:30, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 11, 2025 08:30, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 11, 2025 08:30, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 11, 2025 08:30, sampling point SM1 TTHM 2950 EPA method 524.2 Not recorded
Collected
Oct 8, 2025 15:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
CN-251009-005
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 8, 2025 15:00, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
May 14, 2025 08:00
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-148872-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:00, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:00, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:00, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:00, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:00, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:00, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:00, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:00, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:00, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:00, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:00, sampling point SM2 TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
May 14, 2025 08:30
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-148872-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:30, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:30, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:30, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:30, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:30, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:30, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:30, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:30, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:30, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:30, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 14, 2025 08:30, sampling point SM1 TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
Mar 27, 2025 08:25
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
IN-250327-036
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2025 08:25, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0438 mg/l , sample collected Mar 27, 2025 08:25, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2025 08:25, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0084 mg/l , sample collected Mar 27, 2025 08:25, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 27, 2025 08:25, sampling point TF080 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2025 08:25, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0059 mg/l , sample collected Mar 27, 2025 08:25, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 27, 2025 08:25, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2025 08:25, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2025 08:25, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2025 08:25, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Mar 27, 2025 08:18
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NI-250327-031
Laboratory
MSDH Lab
0.221 mg/l , sample collected Mar 27, 2025 08:18, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
0.221 mg/l , sample collected Mar 27, 2025 08:18, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 27, 2025 08:18, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Mar 3, 2025 12:15
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-139945-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Mar 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM2 TTHM 2950 EPA method 524.2 Jan 1, 2025 – Mar 31, 2025
Collected
Mar 3, 2025 12:15
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-139945-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Mar 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 12:15, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2025 – Mar 31, 2025
Collected
Feb 26, 2025 16:10
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NA-250227-031
Laboratory
MSDH Lab
3.34 mg/l , sample collected Feb 26, 2025 16:10, sampling point TF080 Sodium 1052 EPA method 200.7 Jan 1, 2023 – Dec 31, 2025
Collected
Dec 11, 2024 12:10
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-131304-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 11, 2024 12:10, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 11, 2024 12:10, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 11, 2024 12:10, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 11, 2024 12:10, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 11, 2024 12:10, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 11, 2024 12:10, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 11, 2024 12:10, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 11, 2024 12:10, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 11, 2024 12:10, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 11, 2024 12:10, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 11, 2024 12:10, sampling point SM1 TTHM 2950 EPA method 524.2 Oct 1, 2024 – Dec 31, 2024

Routine (10).