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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; 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 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

Showing samples collected between September 25, 2024 and September 25, 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 8 samples collected between September 25, 2024 and September 25, 2026 are listed below, newest first.

45 results from the 8 samples listed here: 15 detected, 30 not detected. 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 5 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 Darling Water Association, every result from the 8 samples on record, 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 30, 2025 08:00
Sampling point
LC001 Location withheld
Sample type
Routine
Lab sample
PB-251001-045
Laboratory
MSDH Lab
0.0525 mg/l , sample collected Sep 30, 2025 08:00, sampling point LC001 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.763 ug/l , sample collected Sep 30, 2025 08:00, sampling point LC001 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 30, 2025 08:40
Sampling point
LC002 Location withheld
Sample type
Routine
Lab sample
PB-251001-044
Laboratory
MSDH Lab
0.022 mg/l , sample collected Sep 30, 2025 08:40, sampling point LC002 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.568 ug/l , sample collected Sep 30, 2025 08:40, sampling point LC002 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 30, 2025 08:25
Sampling point
LC003 Location withheld
Sample type
Routine
Lab sample
PB-251001-043
Laboratory
MSDH Lab
0.0238 mg/l , sample collected Sep 30, 2025 08:25, sampling point LC003 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.794 ug/l , sample collected Sep 30, 2025 08:25, sampling point LC003 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 30, 2025 08:15
Sampling point
LC004 Location withheld
Sample type
Routine
Lab sample
PB-251001-042
Laboratory
MSDH Lab
0.0447 mg/l , sample collected Sep 30, 2025 08:15, sampling point LC004 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.667 ug/l , sample collected Sep 30, 2025 08:15, sampling point LC004 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 30, 2025 08:50
Sampling point
LC005 Location withheld
Sample type
Routine
Lab sample
PB-251001-041
Laboratory
MSDH Lab
0.0229 mg/l , sample collected Sep 30, 2025 08:50, sampling point LC005 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
1.11 ug/l , sample collected Sep 30, 2025 08:50, sampling point LC005 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 30, 2025 09:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
VO-251001-001
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 30, 2025 09:00, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Collected
Mar 25, 2025 16:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250326-040
Laboratory
MSDH Lab
0.0005 mg/l , sample collected Mar 25, 2025 16:30, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0058 mg/l , sample collected Mar 25, 2025 16:30, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 25, 2025 16:30, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0013 mg/l , sample collected Mar 25, 2025 16:30, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.272 mg/l , sample collected Mar 25, 2025 16:30, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 25, 2025 16:30, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0008 mg/l , sample collected Mar 25, 2025 16:30, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 25, 2025 16:30, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 25, 2025 16:30, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 25, 2025 16:30, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 25, 2025 16:30, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Mar 25, 2025 16:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-250326-071
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 25, 2025 16:30, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 25, 2025 16:30, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 25, 2025 16:30, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025

Routine (8).