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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

MS0610023 , City of Richland

29 of the 61 analytes this system has been tested for have been detected at least once, across 630 samples on record.

The other 32 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 630 samples on record, detections range from October 20, 2003 to July 22, 2026. These figures cover the whole record; the list of samples further down is narrowed.

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 Richland, 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 161 of 161 results Jun 8, 2004 Jul 2, 2025
Lead 1030 Inorganic Chemical 66 of 161 results Jun 8, 2004 Jul 2, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 60 of 60 results Aug 9, 2004 Jun 24, 2026
TTHM 2950 Organic Chemical 58 of 59 results Aug 9, 2004 Mar 18, 2026
Barium 1010 Inorganic Chemical 51 of 51 results Oct 20, 2003 Apr 8, 2025
Fluoride 1025 Inorganic Chemical 51 of 51 results Oct 20, 2003 Apr 8, 2025
Chromium 1020 Inorganic Chemical 35 of 51 results Oct 20, 2003 Apr 8, 2025
Dichloroacetic Acid 2451 Organic Chemical 22 of 22 results Jul 7, 2008 Jun 24, 2026
Trichloroacetic Acid 2452 Organic Chemical 22 of 22 results Jul 7, 2008 Jun 24, 2026
Chloroform 2941 Organic Chemical 22 of 22 results Jun 19, 2007 Mar 18, 2026
Bromodichloromethane 2943 Organic Chemical 22 of 22 results Jun 19, 2007 Mar 18, 2026
Sodium 1052 Inorganic Chemical 18 of 18 results Sep 24, 2019 Jul 22, 2026
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 20 results Mar 13, 2012 Oct 10, 2012
Nickel 1036 Inorganic Chemical 13 of 51 results Mar 27, 2006 Apr 8, 2025
Gross Alpha, Excl. Radon & U 4000 Radionuclide 7 of 8 results Sep 22, 2009 Mar 15, 2010
Combined Radium (-226 & -228) 4010 Radionuclide 7 of 28 results Sep 22, 2009 Mar 15, 2010
Radium-226 4020 Radionuclide 7 of 28 results Sep 22, 2009 Mar 15, 2010
Gross Beta Particle Activity 4100 Radionuclide 7 of 7 results Sep 22, 2009 Mar 15, 2010
Gross Alpha Particle Activity 4109 Radionuclide 7 of 8 results Sep 22, 2009 Mar 15, 2010
Radium-228 4030 Radionuclide 5 of 28 results Sep 22, 2009 Mar 15, 2010
Monobromoacetic Acid 2453 Organic Chemical 5 of 22 results Jun 15, 2009 Dec 14, 2009
Nitrite 1041 Inorganic Chemical 4 of 108 results Jul 31, 2006 Feb 25, 2021
Monochloroacetic Acid 2450 Organic Chemical 4 of 22 results Jul 7, 2008 Jul 11, 2018
Dichloromethane 2964 Organic Chemical 3 of 59 results Aug 23, 2004 Aug 23, 2004
Sulfate 1055 Inorganic Chemical 3 of 3 results Oct 20, 2003 Oct 20, 2003
Selenium 1045 Inorganic Chemical 2 of 51 results Mar 22, 2004 Mar 27, 2006
Xylenes, Total 2955 Organic Chemical 1 of 59 results Sep 7, 2019 Sep 7, 2019
Carbon Tetrachloride 2982 Organic Chemical 1 of 59 results Mar 30, 2004 Mar 30, 2004
Mercury 1035 Inorganic Chemical 1 of 51 results Mar 22, 2004 Mar 22, 2004

Showing samples collected between September 26, 2024 and September 26, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The table below lists 31–40 of 68 samples, newest first — collected July 1, 2025 to July 1, 2025. The summary above covers all 68.

20 results from the 10 samples listed here: 13 detected, 7 not detected. Across the whole record it is 680 of 3,007. 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 10 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 Richland, every result from 31 to 40 of 68 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 1, 2025 08:50
Sampling point
LC031 Location withheld
Sample type
Routine
Lab sample
PB-250708-015
Laboratory
MSDH Lab
0.0819 mg/l , sample collected Jul 1, 2025 08:50, sampling point LC031 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
1 ug/l , sample collected Jul 1, 2025 08:50, sampling point LC031 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 1, 2025 06:00
Sampling point
LC056 Location withheld
Sample type
Routine
Lab sample
PB-250708-018
Laboratory
MSDH Lab
0.0128 mg/l , sample collected Jul 1, 2025 06:00, sampling point LC056 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 1, 2025 06:00, sampling point LC056 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 1, 2025 05:30
Sampling point
LC007 Location withheld
Sample type
Routine
Lab sample
PB-250708-012
Laboratory
MSDH Lab
0.045 mg/l , sample collected Jul 1, 2025 05:30, sampling point LC007 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.6 ug/l , sample collected Jul 1, 2025 05:30, sampling point LC007 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 1, 2025 09:30
Sampling point
LC032 Location withheld
Sample type
Routine
Lab sample
PB-250708-029
Laboratory
MSDH Lab
0.0301 mg/l , sample collected Jul 1, 2025 09:30, sampling point LC032 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 1, 2025 09:30, sampling point LC032 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 1, 2025 04:30
Sampling point
LC030 Location withheld
Sample type
Routine
Lab sample
PB-250708-030
Laboratory
MSDH Lab
0.0248 mg/l , sample collected Jul 1, 2025 04:30, sampling point LC030 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 1, 2025 04:30, sampling point LC030 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 1, 2025 06:10
Sampling point
LC041 Location withheld
Sample type
Routine
Lab sample
PB-250708-024
Laboratory
MSDH Lab
0.0225 mg/l , sample collected Jul 1, 2025 06:10, sampling point LC041 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 1, 2025 06:10, sampling point LC041 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 1, 2025 06:50
Sampling point
LC051 Location withheld
Sample type
Routine
Lab sample
PB-250708-011
Laboratory
MSDH Lab
0.124 mg/l , sample collected Jul 1, 2025 06:50, sampling point LC051 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 1, 2025 06:50, sampling point LC051 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 1, 2025 08:00
Sampling point
LC029 Location withheld
Sample type
Routine
Lab sample
PB-250708-016
Laboratory
MSDH Lab
0.0179 mg/l , sample collected Jul 1, 2025 08:00, sampling point LC029 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 1, 2025 08:00, sampling point LC029 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 1, 2025 06:35
Sampling point
LC010 Location withheld
Sample type
Routine
Lab sample
PB-250708-023
Laboratory
MSDH Lab
0.0745 mg/l , sample collected Jul 1, 2025 06:35, sampling point LC010 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 1, 2025 06:35, sampling point LC010 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 1, 2025 15:20
Sampling point
LC057 Location withheld
Sample type
Routine
Lab sample
PB-250708-021
Laboratory
MSDH Lab
0.0776 mg/l , sample collected Jul 1, 2025 15:20, sampling point LC057 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.9 ug/l , sample collected Jul 1, 2025 15:20, sampling point LC057 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025

Routine (10).