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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

MS0640004 , Harrisville W/A

43 of the 73 analytes this system has been tested for have been detected at least once, across 375 samples on record.

The other 30 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 375 samples on record, detections range from October 22, 2003 to August 19, 2025. 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 Harrisville W/A, 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 51 of 51 results Aug 16, 2007 Jul 25, 2023
Lead 1030 Inorganic Chemical 46 of 51 results Aug 16, 2007 Jul 25, 2023
Barium 1010 Inorganic Chemical 42 of 42 results Oct 22, 2003 Mar 26, 2025
Fluoride 1025 Inorganic Chemical 29 of 43 results Oct 22, 2003 Mar 26, 2025
Xylenes, Total 2955 Organic Chemical 28 of 68 results Apr 22, 2010 Feb 3, 2025
Chromium 1020 Inorganic Chemical 24 of 42 results Mar 22, 2004 Mar 26, 2025
TTHM 2950 Organic Chemical 16 of 19 results Aug 16, 2004 Aug 19, 2025
Bromodichloromethane 2943 Organic Chemical 12 of 14 results Oct 1, 2007 Aug 19, 2025
Dibromochloromethane 2944 Organic Chemical 12 of 14 results Oct 1, 2007 Aug 19, 2025
Ethylbenzene 2992 Organic Chemical 12 of 68 results Apr 22, 2010 Nov 4, 2015
Chloroform 2941 Organic Chemical 10 of 14 results Oct 1, 2007 Aug 19, 2025
Sodium 1052 Inorganic Chemical 10 of 10 results Nov 30, 2009 Dec 4, 2023
Nickel 1036 Inorganic Chemical 8 of 42 results May 13, 2013 Mar 26, 2025
Selenium 1045 Inorganic Chemical 5 of 42 results Apr 10, 2006 Feb 8, 2010
Sulfate 1055 Inorganic Chemical 4 of 4 results Oct 22, 2003 Nov 30, 2009
Bromoform 2942 Organic Chemical 3 of 14 results Oct 13, 2020 Aug 5, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 3 of 19 results Jul 7, 2010 Jun 27, 2022
Nitrate-Nitrite 1038 Inorganic Chemical 2 of 99 results Dec 9, 2009 Dec 9, 2009
Nitrate 1040 Inorganic Chemical 2 of 99 results Dec 9, 2009 Dec 9, 2009
Dichloroacetic Acid 2451 Organic Chemical 1 of 14 results Oct 13, 2020 Oct 13, 2020
Monobromoacetic Acid 2453 Organic Chemical 1 of 14 results Oct 13, 2020 Oct 13, 2020
Dibromoacetic Acid 2454 Organic Chemical 1 of 14 results Oct 13, 2020 Oct 13, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 1 of 1 result Jan 16, 2018 Jan 16, 2018
Radium-226 4020 Radionuclide 1 of 1 result Jan 16, 2018 Jan 16, 2018
Styrene 2996 Organic Chemical 1 of 68 results Aug 27, 2015 Aug 27, 2015
Arsenic 1005 Inorganic Chemical 1 of 42 results Mar 31, 2014 Mar 31, 2014
Calcium 1016 Inorganic Chemical 1 of 1 result Nov 30, 2009 Nov 30, 2009
Chloride 1017 Inorganic Chemical 1 of 1 result Nov 30, 2009 Nov 30, 2009
Iron 1028 Inorganic Chemical 1 of 1 result Nov 30, 2009 Nov 30, 2009
Magnesium 1031 Inorganic Chemical 1 of 1 result Nov 30, 2009 Nov 30, 2009
Manganese 1032 Inorganic Chemical 1 of 1 result Nov 30, 2009 Nov 30, 2009
Potassium 1042 Inorganic Chemical 1 of 1 result Nov 30, 2009 Nov 30, 2009
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Nov 30, 2009 Nov 30, 2009
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Nov 30, 2009 Nov 30, 2009
Carbon Dioxide 1901 Water Quality 1 of 1 result Nov 30, 2009 Nov 30, 2009
Color 1905 Water Quality 1 of 1 result Nov 30, 2009 Nov 30, 2009
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Nov 30, 2009 Nov 30, 2009
PH 1925 Water Quality 1 of 1 result Nov 30, 2009 Nov 30, 2009
Alkalinity, Total 1927 Water Quality 1 of 1 result Nov 30, 2009 Nov 30, 2009
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Nov 30, 2009 Nov 30, 2009
Calculated Sodium NACA Water Quality 1 of 1 result Nov 30, 2009 Nov 30, 2009
PH, Field Result PHFD Water Quality 1 of 1 result Nov 30, 2009 Nov 30, 2009
Mercury 1035 Inorganic Chemical 1 of 42 results Mar 22, 2004 Mar 22, 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 41–50 of 375 samples, newest first — collected November 28, 2022 to July 25, 2023. The summary above covers all 375.

62 results from the 10 samples listed here: 7 detected, 55 not detected. Across the whole record it is 343 of 2,562. 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 3 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 Harrisville W/A, every result from 41 to 50 of 375 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
Jul 25, 2023 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-230725-091
Laboratory
MSDH Lab
0.003 mg/l , sample collected Jul 25, 2023 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.6 ug/l , sample collected Jul 25, 2023 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Jul 25, 2023 06:00
Sampling point
LC0011 Location withheld
Sample type
Routine
Lab sample
PB-230725-090
Laboratory
MSDH Lab
0.0023 mg/l , sample collected Jul 25, 2023 06:00, sampling point LC0011 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 25, 2023 06:00, sampling point LC0011 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Jul 25, 2023 05:10
Sampling point
LC0010 Location withheld
Sample type
Routine
Lab sample
PB-230725-089
Laboratory
MSDH Lab
0.0025 mg/l , sample collected Jul 25, 2023 05:10, sampling point LC0010 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 25, 2023 05:10, sampling point LC0010 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Jul 25, 2023 08:20
Sampling point
LC0007 Location withheld
Sample type
Routine
Lab sample
PB-230725-088
Laboratory
MSDH Lab
0.0728 mg/l , sample collected Jul 25, 2023 08:20, sampling point LC0007 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
7.9 ug/l , sample collected Jul 25, 2023 08:20, sampling point LC0007 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Mar 13, 2023 09:05
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
NI-230313-021
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 09:05, sampling point TF105 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 09:05, sampling point TF105 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 09:05, sampling point TF105 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Mar 13, 2023 09:45
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
NI-230313-020
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 09:45, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 09:45, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 09:45, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Mar 13, 2023 10:00
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NI-230313-019
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 10:00, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 10:00, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 10:00, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Mar 13, 2023 09:25
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-230313-018
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 09:25, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 09:25, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 09:25, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Nov 28, 2022 08:30
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
VO-221129-003
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
1.734 ug/l , sample collected Nov 28, 2022 08:30, sampling point TF105 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 08:30, sampling point TF105 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Nov 28, 2022 07:55
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
VO-221129-002
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 07:55, sampling point TF104 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022

Routine (10).