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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

MS0530018 , Chapel Hill-Pleasant Grove W/A

18 of the 57 analytes this system has been tested for have been detected at least once, across 213 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 213 samples on record, detections range from October 13, 2003 to July 30, 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 Chapel Hill-Pleasant Grove 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 63 of 63 results Aug 14, 2007 Sep 12, 2023
Barium 1010 Inorganic Chemical 22 of 22 results Oct 13, 2003 Jul 30, 2026
Fluoride 1025 Inorganic Chemical 20 of 22 results Oct 13, 2003 Jul 30, 2026
Lead 1030 Inorganic Chemical 15 of 63 results Aug 14, 2007 Jul 11, 2017
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 7, 2011 Jul 10, 2012
Chromium 1020 Inorganic Chemical 7 of 22 results Oct 13, 2003 Mar 7, 2016
Nitrate-Nitrite 1038 Inorganic Chemical 6 of 43 results Aug 24, 2005 Mar 25, 2025
Nitrate 1040 Inorganic Chemical 6 of 43 results Aug 24, 2005 Mar 25, 2025
Nickel 1036 Inorganic Chemical 5 of 20 results Mar 15, 2004 Apr 29, 2013
Selenium 1045 Inorganic Chemical 5 of 22 results Mar 15, 2004 Mar 20, 2006
Sodium 1052 Inorganic Chemical 4 of 4 results Sep 26, 2019 Jul 30, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 3 of 21 results Aug 29, 2007 Sep 30, 2020
TTHM 2950 Organic Chemical 3 of 21 results Jul 19, 2004 Jun 14, 2010
Monobromoacetic Acid 2453 Organic Chemical 1 of 15 results Sep 30, 2020 Sep 30, 2020
Bromoform 2942 Organic Chemical 1 of 16 results Aug 29, 2007 Aug 29, 2007
Bromodichloromethane 2943 Organic Chemical 1 of 16 results Aug 29, 2007 Aug 29, 2007
Dibromochloromethane 2944 Organic Chemical 1 of 16 results Aug 29, 2007 Aug 29, 2007
Arsenic 1005 Inorganic Chemical 1 of 22 results Apr 4, 2005 Apr 4, 2005

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 181–190 of 213 samples, newest first — collected April 4, 2005 to May 14, 2007. The summary above covers all 213.

42 results from the 10 samples listed here: 13 detected, 29 not detected. Across the whole record it is 174 of 1,048. 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 Chapel Hill-Pleasant Grove W/A, every result from 181 to 190 of 213 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
May 14, 2007
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
070515-068NI
Laboratory
MSDH Lab
0.19 mg/l , sample collected May 14, 2007, sampling point TF103 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
0.19 mg/l , sample collected May 14, 2007, sampling point TF103 Nitrate 1040 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 14, 2007, sampling point TF103 Nitrite 1041 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
Collected
Sep 11, 2006
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
060912-002NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Sep 11, 2006, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Sep 11, 2006, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Sep 11, 2006, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Collected
Sep 11, 2006
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
060912-001NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Sep 11, 2006, sampling point TF103 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Sep 11, 2006, sampling point TF103 Nitrate 1040 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Sep 11, 2006, sampling point TF103 Nitrite 1041 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Collected
Mar 20, 2006
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
060321-049CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Mar 20, 2006
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
060321-070CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Mar 20, 2006
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
060321-074IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.032613 mg/l , sample collected Mar 20, 2006, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.118748 mg/l , sample collected Mar 20, 2006, sampling point TF103 Fluoride 1025 EPA method 380-75WE Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
0.000873 mg/l , sample collected Mar 20, 2006, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF103 Uranium-238 4009 Not recorded
Collected
Mar 20, 2006
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
060321-072IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.033986 mg/l , sample collected Mar 20, 2006, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.000792 mg/l , sample collected Mar 20, 2006, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.115883 mg/l , sample collected Mar 20, 2006, sampling point TF102 Fluoride 1025 EPA method 380-75WE Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
0.00093 mg/l , sample collected Mar 20, 2006, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF102 Uranium-238 4009 Not recorded
Collected
Aug 24, 2005
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
050825-024NI
Laboratory
MSDH Lab
0.21 mg/l , sample collected Aug 24, 2005, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
0.21 mg/l , sample collected Aug 24, 2005, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Aug 24, 2005, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
Collected
Aug 24, 2005
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
050825-036NI
Laboratory
MSDH Lab
0.21 mg/l , sample collected Aug 24, 2005, sampling point TF103 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
0.21 mg/l , sample collected Aug 24, 2005, sampling point TF103 Nitrate 1040 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Aug 24, 2005, sampling point TF103 Nitrite 1041 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
Collected
Apr 4, 2005
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
050405-058CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Apr 4, 2005, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007

Routine (10).