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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

MS0370001 , Arnold Line Water Association

26 of the 60 analytes this system has been tested for have been detected at least once, across 536 samples on record.

The other 34 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 536 samples on record, detections range from September 29, 2003 to May 11, 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 Arnold Line 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 286 of 286 results Sep 5, 2007 Jul 16, 2024
Lead 1030 Inorganic Chemical 167 of 286 results Sep 5, 2007 Jul 16, 2024
Barium 1010 Inorganic Chemical 35 of 35 results Sep 29, 2003 Dec 3, 2025
Fluoride 1025 Inorganic Chemical 35 of 35 results Sep 29, 2003 Dec 3, 2025
TTHM 2950 Organic Chemical 23 of 23 results Jun 21, 2004 May 11, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 21 of 23 results Sep 17, 2007 May 22, 2025
Chromium 1020 Inorganic Chemical 18 of 35 results Sep 29, 2003 May 15, 2017
Chloroform 2941 Organic Chemical 17 of 17 results Sep 17, 2007 May 11, 2026
Bromodichloromethane 2943 Organic Chemical 17 of 17 results Sep 17, 2007 May 11, 2026
Dichloroacetic Acid 2451 Organic Chemical 16 of 17 results Sep 17, 2007 May 22, 2025
Trichloroacetic Acid 2452 Organic Chemical 16 of 17 results Sep 17, 2007 May 22, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 15 results Mar 5, 2012 Oct 3, 2012
Dibromochloromethane 2944 Organic Chemical 12 of 17 results Sep 17, 2007 May 11, 2026
Sodium 1052 Inorganic Chemical 9 of 9 results Sep 16, 2019 Dec 3, 2025
Sulfate 1055 Inorganic Chemical 8 of 8 results Sep 29, 2003 Mar 3, 2004
Nickel 1036 Inorganic Chemical 6 of 35 results Dec 3, 2007 May 15, 2017
Gross Alpha, Excl. Radon & U 4000 Radionuclide 6 of 6 results Sep 21, 2009 Mar 8, 2010
Combined Radium (-226 & -228) 4010 Radionuclide 6 of 21 results Sep 21, 2009 Mar 8, 2010
Radium-226 4020 Radionuclide 6 of 21 results Sep 21, 2009 Mar 8, 2010
Gross Beta Particle Activity 4100 Radionuclide 6 of 6 results Sep 21, 2009 Mar 8, 2010
Gross Alpha Particle Activity 4109 Radionuclide 6 of 6 results Sep 21, 2009 Mar 8, 2010
Radium-228 4030 Radionuclide 5 of 21 results Sep 21, 2009 Mar 8, 2010
Monobromoacetic Acid 2453 Organic Chemical 3 of 17 results Aug 28, 2018 Sep 8, 2020
Cyanide 1024 Inorganic Chemical 1 of 35 results Feb 9, 2021 Feb 9, 2021
Monochloroacetic Acid 2450 Organic Chemical 1 of 17 results Aug 28, 2018 Aug 28, 2018
Nitrate 1040 Inorganic Chemical 1 of 66 results Jul 10, 2006 Jul 10, 2006

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 111–120 of 536 samples, newest first — collected July 3, 2018 to April 1, 2019. The summary above covers all 536.

58 results from the 10 samples listed here: 15 detected, 43 not detected. Across the whole record it is 742 of 2,220. 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 Arnold Line Water Association, every result from 111 to 120 of 536 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
Apr 1, 2019 13:50
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
190402-022IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 13:50, sampling point TF104 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.002 mg/l , sample collected Apr 1, 2019 13:50, sampling point TF104 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 13:50, sampling point TF104 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 13:50, sampling point TF104 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.201 mg/l , sample collected Apr 1, 2019 13:50, sampling point TF104 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 13:50, sampling point TF104 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 13:50, sampling point TF104 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 13:50, sampling point TF104 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 13:50, sampling point TF104 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 Apr 1, 2019 13:50, sampling point TF104 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 Apr 1, 2019 13:50, sampling point TF104 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Apr 1, 2019 13:45
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
190402-066NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 13:45, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 13:45, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 13:45, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Collected
Apr 1, 2019 14:20
Sampling point
TF106
Sample type
Routine
Lab sample
190402-065NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 14:20, sampling point TF106 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 14:20, sampling point TF106 Nitrate 1040 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 14:20, sampling point TF106 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Collected
Apr 1, 2019 14:05
Sampling point
TF105
Sample type
Routine
Lab sample
190402-063NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 14:05, sampling point TF105 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 14:05, sampling point TF105 Nitrate 1040 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 1, 2019 14:05, sampling point TF105 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Collected
Sep 12, 2018 12:50
Sampling point
TF106
Sample type
Routine
Lab sample
180913-009VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Dichloromethane 2964 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Benzene 2990 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Toluene 2991 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2018 12:50, sampling point TF106 Styrene 2996 EPA method 524.2 Jan 1, 2013 – Dec 31, 2018
Collected
Aug 28, 2018 12:35
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
180829-005TH
Laboratory
MSDH Lab
5.72 ug/l , sample collected Aug 28, 2018 12:35, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 28, 2018 12:35, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
2.1 ug/l , sample collected Aug 28, 2018 12:35, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 28, 2018 12:35, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
7.8 ug/l , sample collected Aug 28, 2018 12:35, sampling point MRT000 TTHM 2950 Jan 1, 2017 – Dec 31, 2019
Collected
Aug 28, 2018 12:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
180829-017HA
Laboratory
MSDH Lab
0.01 mg/l , sample collected Aug 28, 2018 12:30, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.003 mg/l , sample collected Aug 28, 2018 12:30, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.004 mg/l , sample collected Aug 28, 2018 12:30, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Aug 28, 2018 12:30, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 28, 2018 12:30, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.02 mg/l , sample collected Aug 28, 2018 12:30, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2017 – Dec 31, 2019
Collected
Jul 3, 2018 07:10
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180705-009PB
Laboratory
MSDH Lab
0.0245 mg/l , sample collected Jul 3, 2018 07:10, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
0.0021 mg/l , sample collected Jul 3, 2018 07:10, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
Collected
Jul 3, 2018 07:40
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180705-008PB
Laboratory
MSDH Lab
0.1031 mg/l , sample collected Jul 3, 2018 07:40, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
0.0062 mg/l , sample collected Jul 3, 2018 07:40, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
Collected
Jul 3, 2018
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180705-007PB
Laboratory
MSDH Lab
0.0417 mg/l , sample collected Jul 3, 2018, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 3, 2018, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2018

Routine (10).