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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

MS0600004 , Darling Water Association

27 of the 59 analytes this system has been tested for have been detected at least once, across 195 samples on record.

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 195 samples on record, detections range from October 27, 2003 to September 30, 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 Darling Water Association, 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 79 of 80 results Jul 11, 2007 Sep 30, 2025
Lead 1030 Inorganic Chemical 68 of 80 results Jul 11, 2007 Sep 30, 2025
TTHM 2950 Organic Chemical 16 of 16 results Jun 20, 2007 Dec 20, 2022
Chloroform 2941 Organic Chemical 15 of 15 results Jun 20, 2007 Dec 5, 2016
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 14 of 15 results Jun 20, 2007 Dec 20, 2022
Bromodichloromethane 2943 Organic Chemical 14 of 15 results Jun 20, 2007 Dec 5, 2016
Bromoform 2942 Organic Chemical 13 of 15 results Jun 20, 2007 Dec 5, 2016
Dibromochloromethane 2944 Organic Chemical 13 of 15 results Jun 20, 2007 Dec 5, 2016
Dichloroacetic Acid 2451 Organic Chemical 11 of 13 results Oct 24, 2007 Dec 5, 2016
Xylenes, Total 2955 Organic Chemical 10 of 32 results Aug 16, 2010 Sep 21, 2021
Dibromoacetic Acid 2454 Organic Chemical 10 of 13 results Oct 24, 2007 Dec 5, 2016
Barium 1010 Inorganic Chemical 9 of 9 results Oct 27, 2003 Mar 25, 2025
Fluoride 1025 Inorganic Chemical 9 of 9 results Oct 27, 2003 Mar 25, 2025
Arsenic 1005 Inorganic Chemical 8 of 9 results Mar 22, 2004 Mar 25, 2025
Chromium 1020 Inorganic Chemical 8 of 9 results Oct 27, 2003 Mar 25, 2025
Trichloroacetic Acid 2452 Organic Chemical 8 of 13 results Oct 24, 2007 Dec 5, 2016
Selenium 1045 Inorganic Chemical 7 of 9 results Mar 22, 2004 Oct 18, 2022
Nickel 1036 Inorganic Chemical 6 of 9 results Apr 12, 2006 Mar 25, 2025
Sodium 1052 Inorganic Chemical 2 of 2 results Sep 17, 2019 Nov 7, 2023
Monobromoacetic Acid 2453 Organic Chemical 2 of 13 results Oct 24, 2007 Dec 5, 2016
Carbon Tetrachloride 2982 Organic Chemical 1 of 32 results Sep 21, 2021 Sep 21, 2021
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 3 results Aug 4, 2020 Aug 4, 2020
Radium-226 4020 Radionuclide 1 of 3 results Aug 4, 2020 Aug 4, 2020
Gross Alpha Particle Activity 4109 Radionuclide 1 of 4 results Sep 10, 2012 Sep 10, 2012
Dichloromethane 2964 Organic Chemical 1 of 32 results Aug 22, 2011 Aug 22, 2011
Monochloroacetic Acid 2450 Organic Chemical 1 of 13 results Nov 16, 2009 Nov 16, 2009
Nitrite 1041 Inorganic Chemical 1 of 22 results Jul 14, 2008 Jul 14, 2008

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 41–50 of 195 samples, newest first — collected September 13, 2017 to June 10, 2019. The summary above covers all 195.

68 results from the 10 samples listed here: 18 detected, 50 not detected. Across the whole record it is 329 of 1,186. 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 Darling Water Association, every result from 41 to 50 of 195 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
Jun 10, 2019 06:10
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190612-016PB
Laboratory
MSDH Lab
0.1287 mg/l , sample collected Jun 10, 2019 06:10, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2019
0.0008 mg/l , sample collected Jun 10, 2019 06:10, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2019
Collected
May 7, 2019 13:20
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
190508-024IN
Laboratory
MSDH Lab
0.0008 mg/l , sample collected May 7, 2019 13:20, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0081 mg/l , sample collected May 7, 2019 13:20, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 7, 2019 13:20, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0024 mg/l , sample collected May 7, 2019 13:20, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.29 mg/l , sample collected May 7, 2019 13:20, sampling point TF101 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 7, 2019 13:20, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0006 mg/l , sample collected May 7, 2019 13:20, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
0.0054 mg/l , sample collected May 7, 2019 13:20, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 7, 2019 13:20, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 7, 2019 13:20, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 7, 2019 13:20, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Jul 16, 2018 14:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180717-007VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 16, 2018 14:30, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2018 – Dec 31, 2018
Collected
Jun 4, 2018 06:05
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180605-010PB
Laboratory
MSDH Lab
0.6508 mg/l , sample collected Jun 4, 2018 06:05, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
0.0007 mg/l , sample collected Jun 4, 2018 06:05, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
Collected
Jun 4, 2018 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180605-009PB
Laboratory
MSDH Lab
0.0598 mg/l , sample collected Jun 4, 2018 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
0.0007 mg/l , sample collected Jun 4, 2018 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
Collected
Jun 4, 2018 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180605-008PB
Laboratory
MSDH Lab
0.0314 mg/l , sample collected Jun 4, 2018 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
0.0025 mg/l , sample collected Jun 4, 2018 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
Collected
Jun 4, 2018 06:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180605-007PB
Laboratory
MSDH Lab
0.1546 mg/l , sample collected Jun 4, 2018 06:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
0.0006 mg/l , sample collected Jun 4, 2018 06:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
Collected
Jun 4, 2018 05:05
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180605-006PB
Laboratory
MSDH Lab
0.0222 mg/l , sample collected Jun 4, 2018 05:05, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
0.0026 mg/l , sample collected Jun 4, 2018 05:05, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
Collected
Mar 19, 2018 13:12
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180320-008NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 19, 2018 13:12, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 19, 2018 13:12, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 19, 2018 13:12, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Sep 13, 2017 13:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
170914-004VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2017 13:30, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017

Routine (10).