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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

MS0580007 , Randolph Water Association #1

21 of the 58 analytes this system has been tested for have been detected at least once, across 297 samples on record.

The other 37 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 297 samples on record, detections range from October 15, 2003 to August 19, 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 Randolph Water Association #1, 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 90 of 90 results Aug 9, 2004 Jun 24, 2025
Lead 1030 Inorganic Chemical 60 of 90 results Aug 9, 2004 Jun 24, 2025
Barium 1010 Inorganic Chemical 27 of 27 results Oct 15, 2003 Mar 19, 2025
Fluoride 1025 Inorganic Chemical 25 of 27 results Oct 15, 2003 Mar 19, 2025
Nickel 1036 Inorganic Chemical 19 of 27 results Mar 15, 2004 Mar 19, 2025
Arsenic 1005 Inorganic Chemical 17 of 27 results Mar 15, 2004 Mar 19, 2025
Chromium 1020 Inorganic Chemical 11 of 27 results Oct 15, 2003 Apr 1, 2020
Nitrite 1041 Inorganic Chemical 10 of 56 results Sep 26, 2005 Apr 9, 2024
Selenium 1045 Inorganic Chemical 10 of 27 results Mar 15, 2004 Apr 1, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 5, 2011 Jul 10, 2012
TTHM 2950 Organic Chemical 9 of 11 results Sep 4, 2007 Aug 19, 2025
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 19, 2019 Mar 3, 2025
Combined Radium (-226 & -228) 4010 Radionuclide 6 of 11 results Dec 5, 2011 Jun 9, 2020
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 5 of 11 results Sep 4, 2007 Jun 12, 2024
Radium-226 4020 Radionuclide 5 of 11 results Dec 5, 2011 Jul 10, 2012
Nitrate-Nitrite 1038 Inorganic Chemical 5 of 56 results Sep 26, 2005 Jun 1, 2009
Nitrate 1040 Inorganic Chemical 3 of 56 results Sep 26, 2005 Jul 14, 2008
Bromoform 2942 Organic Chemical 2 of 5 results Aug 8, 2016 Dec 14, 2020
Xylenes, Total 2955 Organic Chemical 2 of 37 results Aug 17, 2010 Aug 17, 2010
Radium-228 4030 Radionuclide 1 of 11 results Jun 9, 2020 Jun 9, 2020
Cadmium 1015 Inorganic Chemical 1 of 27 results Apr 11, 2005 Apr 11, 2005

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 table below lists 11–20 of 22 samples, newest first — collected March 19, 2025 to June 24, 2025. The summary above covers all 22.

60 results from the 10 samples listed here: 14 detected, 46 not detected. Across the whole record it is 324 of 1,587. 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 4 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 Randolph Water Association #1, every result from 11 to 20 of 22 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 24, 2025 06:30
Sampling point
LC0019 Location withheld
Sample type
Routine
Lab sample
PB-250625-009
Laboratory
MSDH Lab
0.22 mg/l , sample collected Jun 24, 2025 06:30, sampling point LC0019 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
1.1 ug/l , sample collected Jun 24, 2025 06:30, sampling point LC0019 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 24, 2025 07:15
Sampling point
LC0020 Location withheld
Sample type
Routine
Lab sample
PB-250625-010
Laboratory
MSDH Lab
0.288 mg/l , sample collected Jun 24, 2025 07:15, sampling point LC0020 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 24, 2025 07:15, sampling point LC0020 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 24, 2025 07:10
Sampling point
LC0002 Location withheld
Sample type
Routine
Lab sample
PB-250625-007
Laboratory
MSDH Lab
0.0272 mg/l , sample collected Jun 24, 2025 07:10, sampling point LC0002 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
2.7 ug/l , sample collected Jun 24, 2025 07:10, sampling point LC0002 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 24, 2025 07:00
Sampling point
LC0001 Location withheld
Sample type
Routine
Lab sample
PB-250625-008
Laboratory
MSDH Lab
0.0558 mg/l , sample collected Jun 24, 2025 07:00, sampling point LC0001 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 24, 2025 07:00, sampling point LC0001 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Apr 1, 2025 13:15
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
NI-250402-047
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 1, 2025 13:15, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 1, 2025 13:15, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 1, 2025 13:15, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Apr 1, 2025 13:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-250402-046
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 1, 2025 13:30, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 1, 2025 13:30, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 1, 2025 13:30, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Apr 1, 2025 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-250402-045
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 1, 2025 13:00, 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 Apr 1, 2025 13:00, 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 Apr 1, 2025 13:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Mar 19, 2025 10:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-250320-021
Laboratory
MSDH Lab
0.0023 mg/l , sample collected Mar 19, 2025 10:30, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0776 mg/l , sample collected Mar 19, 2025 10:30, sampling point TF102 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 19, 2025 10:30, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 19, 2025 10:30, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.161 mg/l , sample collected Mar 19, 2025 10:30, sampling point TF102 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 19, 2025 10:30, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0005 mg/l , sample collected Mar 19, 2025 10:30, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 19, 2025 10:30, sampling point TF102 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 19, 2025 10:30, sampling point TF102 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 19, 2025 10:30, sampling point TF102 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 19, 2025 10:30, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Mar 19, 2025 10:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250320-020
Laboratory
MSDH Lab
0.002 mg/l , sample collected Mar 19, 2025 10:00, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0772 mg/l , sample collected Mar 19, 2025 10:00, 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 19, 2025 10:00, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 19, 2025 10:00, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.183 mg/l , sample collected Mar 19, 2025 10:00, 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 19, 2025 10:00, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0005 mg/l , sample collected Mar 19, 2025 10:00, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 19, 2025 10:00, 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 19, 2025 10:00, 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 19, 2025 10:00, 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 19, 2025 10:00, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Mar 19, 2025 15:30
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
VO-250320-007
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Dichloromethane 2964 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Benzene 2990 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Toluene 2991 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 19, 2025 15:30, sampling point TF103 Styrene 2996 EPA method 524.2 Jan 1, 2025 – Dec 31, 2027

Routine (10).