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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 632 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 632 samples on record, detections range from October 20, 2003 to August 13, 2026. 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 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 16 of 22 results Mar 13, 2012 Aug 13, 2026
Nickel 1036 Inorganic Chemical 13 of 51 results Mar 27, 2006 Apr 8, 2025
Combined Radium (-226 & -228) 4010 Radionuclide 9 of 30 results Sep 22, 2009 Aug 13, 2026
Radium-226 4020 Radionuclide 8 of 30 results Sep 22, 2009 Aug 13, 2026
Gross Alpha, Excl. Radon & U 4000 Radionuclide 7 of 8 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 6 of 30 results Sep 22, 2009 Aug 13, 2026
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

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 461–470 of 632 samples, newest first — collected August 3, 2010 to August 3, 2010. The summary above covers all 632.

20 results from the 10 samples listed here: 18 detected, 2 not detected. Across the whole record it is 685 of 3,015. 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 Richland, every result from 461 to 470 of 632 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
Aug 3, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100805-017PB
Laboratory
MSDH Lab
0.0211 mg/l , sample collected Aug 3, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 3, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 3, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100805-016PB
Laboratory
MSDH Lab
0.1026 mg/l , sample collected Aug 3, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0012 mg/l , sample collected Aug 3, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 3, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100805-015PB
Laboratory
MSDH Lab
0.0303 mg/l , sample collected Aug 3, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0011 mg/l , sample collected Aug 3, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 3, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100805-012PB
Laboratory
MSDH Lab
0.0309 mg/l , sample collected Aug 3, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0008 mg/l , sample collected Aug 3, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 3, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100805-011PB
Laboratory
MSDH Lab
0.1295 mg/l , sample collected Aug 3, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0005 mg/l , sample collected Aug 3, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 3, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100805-010PB
Laboratory
MSDH Lab
0.1042 mg/l , sample collected Aug 3, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0005 mg/l , sample collected Aug 3, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 3, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100805-006PB
Laboratory
MSDH Lab
0.1294 mg/l , sample collected Aug 3, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0018 mg/l , sample collected Aug 3, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 3, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100805-005PB
Laboratory
MSDH Lab
0.0361 mg/l , sample collected Aug 3, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0008 mg/l , sample collected Aug 3, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 3, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100805-003PB
Laboratory
MSDH Lab
0.0222 mg/l , sample collected Aug 3, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0006 mg/l , sample collected Aug 3, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 3, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100805-002PB
Laboratory
MSDH Lab
0.0434 mg/l , sample collected Aug 3, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 3, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010

Routine (10).