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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 61–70 of 396 samples, newest first — collected May 19, 2021 to September 23, 2021. The summary above covers all 396.

21 results from the 10 samples listed here: 16 detected, 5 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.

Chemical and radiological sample results for City of Columbia, every result from 61 to 70 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
Sep 23, 2021 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210929-009
Laboratory
MSDH Lab
0.148 mg/l , sample collected Sep 23, 2021 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.8 ug/l , sample collected Sep 23, 2021 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Sep 23, 2021 04:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210929-008
Laboratory
MSDH Lab
0.212 mg/l , sample collected Sep 23, 2021 04:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 23, 2021 04:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Sep 23, 2021 05:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210929-007
Laboratory
MSDH Lab
0.601 mg/l , sample collected Sep 23, 2021 05:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.8 ug/l , sample collected Sep 23, 2021 05:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Sep 23, 2021 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210929-006
Laboratory
MSDH Lab
0.0754 mg/l , sample collected Sep 23, 2021 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 23, 2021 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Sep 23, 2021 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210929-005
Laboratory
MSDH Lab
0.686 mg/l , sample collected Sep 23, 2021 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
1 ug/l , sample collected Sep 23, 2021 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Sep 23, 2021 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210929-003
Laboratory
MSDH Lab
0.26 mg/l , sample collected Sep 23, 2021 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 23, 2021 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Sep 23, 2021 09:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210929-020
Laboratory
MSDH Lab
0.0293 mg/l , sample collected Sep 23, 2021 09:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 23, 2021 09:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Sep 23, 2021 07:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210929-019
Laboratory
MSDH Lab
0.117 mg/l , sample collected Sep 23, 2021 07:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
1.6 ug/l , sample collected Sep 23, 2021 07:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Sep 23, 2021 05:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210929-018
Laboratory
MSDH Lab
0.0213 mg/l , sample collected Sep 23, 2021 05:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
1.1 ug/l , sample collected Sep 23, 2021 05:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
May 19, 2021 11:50
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NI-210520-002
Laboratory
MSDH Lab
0.232 mg/l , sample collected May 19, 2021 11:50, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
0.232 mg/l , sample collected May 19, 2021 11:50, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 19, 2021 11:50, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021

Routine (10).