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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

MS0450019 , PRVWSD-Main Harbor

23 of the 56 analytes this system has been tested for have been detected at least once, across 224 samples on record.

The other 33 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 224 samples on record, detections range from October 6, 2003 to February 12, 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 PRVWSD-Main Harbor, 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 69 of 69 results Aug 13, 2007 Sep 7, 2023
Lead 1030 Inorganic Chemical 43 of 69 results Aug 14, 2007 Sep 7, 2023
TTHM 2950 Organic Chemical 20 of 22 results Aug 21, 2007 Feb 12, 2026
Barium 1010 Inorganic Chemical 18 of 18 results Oct 6, 2003 Mar 11, 2025
Fluoride 1025 Inorganic Chemical 18 of 18 results Oct 6, 2003 Mar 11, 2025
Bromodichloromethane 2943 Organic Chemical 15 of 16 results Sep 28, 2009 Feb 12, 2026
Chloroform 2941 Organic Chemical 14 of 16 results Aug 7, 2013 Feb 12, 2026
Dibromochloromethane 2944 Organic Chemical 14 of 16 results Sep 28, 2009 Feb 12, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 13 of 22 results Aug 21, 2007 Feb 12, 2026
Bromoform 2942 Organic Chemical 13 of 16 results Sep 28, 2009 Feb 12, 2026
Dibromoacetic Acid 2454 Organic Chemical 10 of 15 results Sep 28, 2009 Feb 12, 2026
Chromium 1020 Inorganic Chemical 10 of 18 results Oct 6, 2003 Nov 23, 2015
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 16, 2019 Feb 24, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 10 results Dec 5, 2011 Jul 12, 2012
Combined Radium (-226 & -228) 4010 Radionuclide 5 of 10 results Dec 5, 2011 Jul 12, 2012
Radium-226 4020 Radionuclide 5 of 10 results Dec 5, 2011 Jul 12, 2012
Selenium 1045 Inorganic Chemical 4 of 18 results Mar 8, 2004 Apr 11, 2005
Sulfate 1055 Inorganic Chemical 4 of 4 results Oct 6, 2003 Mar 8, 2004
Dichloroacetic Acid 2451 Organic Chemical 3 of 15 results Jul 7, 2016 Feb 12, 2026
Trichloroacetic Acid 2452 Organic Chemical 3 of 15 results Jul 7, 2016 Feb 12, 2026
Nickel 1036 Inorganic Chemical 3 of 18 results Mar 8, 2004 Feb 3, 2010
Cadmium 1015 Inorganic Chemical 2 of 18 results Apr 11, 2005 Apr 11, 2005
Monobromoacetic Acid 2453 Organic Chemical 1 of 15 results Sep 14, 2020 Sep 14, 2020

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 51–60 of 224 samples, newest first — collected August 18, 2020 to September 20, 2021. The summary above covers all 224.

26 results from the 10 samples listed here: 13 detected, 13 not detected. Across the whole record it is 298 of 1,023. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Units in this table

Total Haloacetic Acids (Haa5) is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Chemical and radiological sample results for PRVWSD-Main Harbor, every result from 51 to 60 of 224 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
Sep 20, 2021 07:45
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-210921-016
Laboratory
MSDH Lab
5.29 ug/l , sample collected Sep 20, 2021 07:45, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2021
Collected
May 27, 2021 08:16
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
RU-210528-002
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 27, 2021 08:16, sampling point TF103 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
May 27, 2021 08:31
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
RU-210528-001
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 27, 2021 08:31, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
Apr 1, 2021 10:30
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NI-210401-060
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 1, 2021 10:30, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 1, 2021 10:30, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 1, 2021 10:30, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Collected
Apr 1, 2021 10:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-210401-059
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 1, 2021 10:00, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 1, 2021 10:00, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 1, 2021 10:00, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Collected
Sep 14, 2020 13:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
200915-006TH
Laboratory
MSDH Lab
1.41 ug/l , sample collected Sep 14, 2020 13:00, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
1.08 ug/l , sample collected Sep 14, 2020 13:00, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
1.99 ug/l , sample collected Sep 14, 2020 13:00, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
2.27 ug/l , sample collected Sep 14, 2020 13:00, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.75 ug/l , sample collected Sep 14, 2020 13:00, sampling point MRT000 TTHM 2950 Jan 1, 2020 – Dec 31, 2020
Collected
Sep 14, 2020 13:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
200915-016HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Sep 14, 2020 13:00, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 14, 2020 13:00, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 14, 2020 13:00, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
0.006 mg/l , sample collected Sep 14, 2020 13:00, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
0.001 mg/l , sample collected Sep 14, 2020 13:00, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.007 mg/l , sample collected Sep 14, 2020 13:00, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2020 – Dec 31, 2020
Collected
Aug 18, 2020 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200820-010PB
Laboratory
MSDH Lab
0.7765 mg/l , sample collected Aug 18, 2020 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0008 mg/l , sample collected Aug 18, 2020 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Aug 18, 2020 06:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200820-008PB
Laboratory
MSDH Lab
0.5237 mg/l , sample collected Aug 18, 2020 06:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 18, 2020 06:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Aug 18, 2020 06:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200820-007PB
Laboratory
MSDH Lab
0.6353 mg/l , sample collected Aug 18, 2020 06:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 18, 2020 06:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020

Routine (10).