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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

MS0330008 , Town of Prentiss

19 of the 58 analytes this system has been tested for have been detected at least once, across 157 samples on record.

The other 39 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 157 samples on record, detections range from September 24, 2003 to July 9, 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 Town of Prentiss, 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 60 of 60 results Jul 24, 2007 Aug 22, 2023
Nitrate-Nitrite 1038 Inorganic Chemical 23 of 23 results May 17, 2004 Jul 9, 2026
Nitrate 1040 Inorganic Chemical 23 of 23 results May 17, 2004 Jul 9, 2026
TTHM 2950 Organic Chemical 19 of 21 results Jun 14, 2004 Dec 17, 2025
Chloroform 2941 Organic Chemical 14 of 16 results Aug 8, 2007 Dec 17, 2025
Lead 1030 Inorganic Chemical 14 of 60 results Jul 24, 2007 Sep 10, 2020
Bromodichloromethane 2943 Organic Chemical 11 of 16 results Sep 22, 2009 Dec 17, 2025
Barium 1010 Inorganic Chemical 10 of 10 results Sep 24, 2003 Feb 25, 2025
Fluoride 1025 Inorganic Chemical 9 of 10 results Sep 24, 2003 May 17, 2022
Dibromochloromethane 2944 Organic Chemical 7 of 16 results Sep 22, 2009 Oct 22, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 5 of 22 results Sep 22, 2009 May 24, 2023
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 12, 2011 Jul 17, 2012
Combined Radium (-226 & -228) 4010 Radionuclide 5 of 5 results Dec 12, 2011 Jul 17, 2012
Radium-226 4020 Radionuclide 5 of 5 results Dec 12, 2011 Jul 17, 2012
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 17, 2019 Feb 4, 2025
Monobromoacetic Acid 2453 Organic Chemical 2 of 16 results Aug 6, 2019 Sep 8, 2020
Dichloroacetic Acid 2451 Organic Chemical 2 of 16 results Jun 4, 2019 Aug 6, 2019
Dibromoacetic Acid 2454 Organic Chemical 1 of 16 results Jun 4, 2019 Jun 4, 2019
Nickel 1036 Inorganic Chemical 1 of 10 results Feb 23, 2004 Feb 23, 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 71–80 of 157 samples, newest first — collected April 8, 2015 to June 20, 2017. The summary above covers all 157.

38 results from the 10 samples listed here: 16 detected, 22 not detected. Across the whole record it is 219 of 674. 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 Town of Prentiss, every result from 71 to 80 of 157 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 20, 2017 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170621-166PB
Laboratory
MSDH Lab
0.0037 mg/l , sample collected Jun 20, 2017 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0006 mg/l , sample collected Jun 20, 2017 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jun 20, 2017 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170621-165PB
Laboratory
MSDH Lab
0.0025 mg/l , sample collected Jun 20, 2017 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 20, 2017 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jun 20, 2017 07:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170621-164PB
Laboratory
MSDH Lab
0.004 mg/l , sample collected Jun 20, 2017 07:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 20, 2017 07:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jun 20, 2017 05:25
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170621-163PB
Laboratory
MSDH Lab
0.0118 mg/l , sample collected Jun 20, 2017 05:25, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0009 mg/l , sample collected Jun 20, 2017 05:25, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jun 20, 2017 06:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170621-162PB
Laboratory
MSDH Lab
0.0016 mg/l , sample collected Jun 20, 2017 06:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 20, 2017 06:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Feb 21, 2017 16:10
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
170222-054NI
Laboratory
MSDH Lab
0.5 mg/l , sample collected Feb 21, 2017 16:10, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
0.49 mg/l , sample collected Feb 21, 2017 16:10, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 21, 2017 16:10, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Apr 13, 2016 13:10
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
160414-027NI
Laboratory
MSDH Lab
0.55 mg/l , sample collected Apr 13, 2016 13:10, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
0.54 mg/l , sample collected Apr 13, 2016 13:10, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 13, 2016 13:10, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Jun 29, 2015 03:10
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
150630-015TH
Laboratory
MSDH Lab
1.67 ug/l , sample collected Jun 29, 2015 03:10, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 29, 2015 03:10, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
1.31 ug/l , sample collected Jun 29, 2015 03:10, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 29, 2015 03:10, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
2.98 ug/l , sample collected Jun 29, 2015 03:10, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2014 – Dec 31, 2016
Collected
Jun 29, 2015 03:10
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
150630-016HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jun 29, 2015 03:10, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 29, 2015 03:10, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 29, 2015 03:10, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 29, 2015 03:10, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 29, 2015 03:10, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Jun 29, 2015 03:10, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2014 – Dec 31, 2016
Collected
Apr 8, 2015 01:20
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
150409-045IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2015 01:20, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.014 mg/l , sample collected Apr 8, 2015 01:20, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2015 01:20, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2015 01:20, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
1.11 mg/l , sample collected Apr 8, 2015 01:20, sampling point TF080 Fluoride 1025 EPA method 300.0 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2015 01:20, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2015 01:20, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 8, 2015 01:20, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2015 01:20, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2015 01:20, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2015 01:20, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016

Routine (10).