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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.

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

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 121–130 of 630 samples, newest first — collected October 19, 2022 to February 23, 2023. The summary above covers all 630.

70 results from the 10 samples listed here: 16 detected, 54 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 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 Richland, every result from 121 to 130 of 630 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
Feb 23, 2023 12:05
Sampling point
TF107 Treatment Facility TF107
Sample type
Routine
Lab sample
VO-230224-003
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Dichloromethane 2964 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Benzene 2990 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Toluene 2991 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 23, 2023 12:05, sampling point TF107 Styrene 2996 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Collected
Feb 23, 2023 10:00
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
HA-230224-003
Laboratory
MSDH Lab
56.7 ug/l , sample collected Feb 23, 2023 10:00, sampling point SMH Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2023 – Mar 31, 2023
Collected
Nov 8, 2022 13:30
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
HA-221109-038
Laboratory
MSDH Lab
50.7 ug/l , sample collected Nov 8, 2022 13:30, sampling point SMT Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2022 – Dec 31, 2022
Collected
Nov 8, 2022 13:00
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
HA-221109-037
Laboratory
MSDH Lab
56.8 ug/l , sample collected Nov 8, 2022 13:00, sampling point SMH Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2022 – Dec 31, 2022
Collected
Nov 8, 2022 13:30
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
TH-221109-038
Laboratory
MSDH Lab
59.3 ug/l , sample collected Nov 8, 2022 13:30, sampling point SMT TTHM 2950 EPA method 524.2 Oct 1, 2022 – Dec 31, 2022
Collected
Nov 8, 2022 13:00
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
TH-221109-037
Laboratory
MSDH Lab
58.4 ug/l , sample collected Nov 8, 2022 13:00, sampling point SMH TTHM 2950 EPA method 524.2 Oct 1, 2022 – Dec 31, 2022
Collected
Oct 19, 2022 13:15
Sampling point
TF105
Sample type
Routine
Lab sample
IN-221020-032
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF105 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0016 mg/l , sample collected Oct 19, 2022 13:15, sampling point TF105 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF105 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0019 mg/l , sample collected Oct 19, 2022 13:15, sampling point TF105 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.179 mg/l , sample collected Oct 19, 2022 13:15, sampling point TF105 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF105 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF105 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF105 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF105 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF105 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF105 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Oct 19, 2022 12:45
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
IN-221020-031
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:45, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0021 mg/l , sample collected Oct 19, 2022 12:45, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:45, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:45, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.214 mg/l , sample collected Oct 19, 2022 12:45, sampling point TF103 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:45, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:45, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:45, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:45, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:45, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:45, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Oct 19, 2022 12:20
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-221020-030
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:20, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0018 mg/l , sample collected Oct 19, 2022 12:20, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:20, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:20, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.192 mg/l , sample collected Oct 19, 2022 12:20, sampling point TF102 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:20, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:20, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:20, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:20, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:20, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:20, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Oct 19, 2022 12:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-221020-029
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:00, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0092 mg/l , sample collected Oct 19, 2022 12:00, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:00, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0007 mg/l , sample collected Oct 19, 2022 12:00, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.289 mg/l , sample collected Oct 19, 2022 12:00, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:00, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0018 mg/l , sample collected Oct 19, 2022 12:00, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:00, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:00, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:00, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 12:00, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022

Routine (10).