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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

MS0630002 , Town of Cary

38 of the 72 analytes this system has been tested for have been detected at least once, across 252 samples on record.

The other 34 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 252 samples on record, detections range from October 22, 2003 to October 15, 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 Town of Cary, 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
TTHM 2950 Organic Chemical 52 of 52 results Sep 21, 2004 Oct 15, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 50 of 51 results Sep 21, 2004 Oct 15, 2025
Chloroform 2941 Organic Chemical 29 of 29 results Aug 17, 2006 Mar 19, 2024
Copper, Free 1022 Inorganic Chemical 26 of 26 results Jul 10, 2007 Aug 26, 2020
Lead 1030 Inorganic Chemical 24 of 26 results Jul 10, 2007 Aug 26, 2020
Dichloroacetic Acid 2451 Organic Chemical 23 of 23 results Feb 26, 2008 Mar 19, 2024
Bromodichloromethane 2943 Organic Chemical 23 of 29 results Aug 17, 2006 Mar 19, 2024
Trichloroacetic Acid 2452 Organic Chemical 22 of 23 results Feb 26, 2008 Mar 19, 2024
Fluoride 1025 Inorganic Chemical 18 of 18 results Oct 22, 2003 Jul 29, 2025
Barium 1010 Inorganic Chemical 15 of 15 results Oct 22, 2003 Jul 29, 2025
Nitrite 1041 Inorganic Chemical 13 of 34 results Aug 2, 2006 Mar 29, 2022
Chromium 1020 Inorganic Chemical 10 of 15 results Oct 22, 2003 Jul 29, 2025
Dibromochloromethane 2944 Organic Chemical 10 of 29 results Dec 4, 2006 Mar 19, 2024
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 14, 2011 Jul 18, 2012
Xylenes, Total 2955 Organic Chemical 9 of 32 results Jun 5, 2012 Mar 17, 2015
Sodium 1052 Inorganic Chemical 8 of 8 results Apr 21, 2010 Nov 7, 2023
Nickel 1036 Inorganic Chemical 7 of 15 results Apr 20, 2005 Sep 4, 2018
Monochloroacetic Acid 2450 Organic Chemical 5 of 23 results Feb 26, 2008 Mar 19, 2024
Calcium 1016 Inorganic Chemical 4 of 4 results Apr 21, 2010 Apr 14, 2015
Chloride 1017 Inorganic Chemical 4 of 4 results Apr 21, 2010 Apr 14, 2015
Manganese 1032 Inorganic Chemical 4 of 4 results Apr 21, 2010 Apr 14, 2015
Potassium 1042 Inorganic Chemical 4 of 4 results Apr 21, 2010 Apr 14, 2015
Sulfate 1055 Inorganic Chemical 4 of 5 results Apr 21, 2010 Apr 14, 2015
Residue, Total, Filterable 1057 Water Quality 4 of 4 results Apr 21, 2010 Apr 14, 2015
Alkalinity, Caco3 Stability 1067 Water Quality 4 of 4 results Apr 21, 2010 Apr 14, 2015
Color 1905 Water Quality 4 of 4 results Apr 21, 2010 Apr 14, 2015
Hardness, Total (As Caco3) 1915 Water Quality 4 of 4 results Apr 21, 2010 Apr 14, 2015
Alkalinity, Total 1927 Water Quality 4 of 4 results Apr 21, 2010 Apr 14, 2015
Calculated Sodium NACA Water Quality 4 of 4 results Apr 21, 2010 Apr 14, 2015
PH, Field Result PHFD Water Quality 4 of 4 results Apr 21, 2010 Apr 14, 2015
Ethylbenzene 2992 Organic Chemical 4 of 32 results Jun 5, 2012 Nov 4, 2013
Selenium 1045 Inorganic Chemical 3 of 15 results Mar 24, 2004 Apr 16, 2008
Arsenic 1005 Inorganic Chemical 2 of 15 results Sep 4, 2018 Jul 29, 2025
Iron, Field Result FEFD Inorganic Chemical 2 of 4 results Apr 21, 2010 Apr 14, 2015
Carbon Dioxide 1901 Water Quality 2 of 2 results Apr 21, 2010 Apr 21, 2010
Styrene 2996 Organic Chemical 1 of 32 results Jun 5, 2012 Jun 5, 2012
Monobromoacetic Acid 2453 Organic Chemical 1 of 23 results Dec 6, 2011 Dec 6, 2011
Magnesium 1031 Inorganic Chemical 1 of 4 results Apr 21, 2010 Apr 21, 2010

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 151–160 of 252 samples, newest first — collected June 21, 2011 to December 6, 2011. The summary above covers all 252.

34 results from the 10 samples listed here: 23 detected, 11 not detected. Across the whole record it is 418 of 1,465. 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 Cary, every result from 151 to 160 of 252 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
Dec 6, 2011 13:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
111207-001TH
Laboratory
MSDH Lab
36.4 ug/l , sample collected Dec 6, 2011 13:30, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 6, 2011 13:30, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
2.78 ug/l , sample collected Dec 6, 2011 13:30, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 6, 2011 13:30, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
39.2 ug/l , sample collected Dec 6, 2011 13:30, sampling point MRT000 TTHM 2950 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Collected
Dec 6, 2011 12:19
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
111207-001HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Dec 6, 2011 12:19, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.013 mg/l , sample collected Dec 6, 2011 12:19, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.029 mg/l , sample collected Dec 6, 2011 12:19, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
0.008 mg/l , sample collected Dec 6, 2011 12:19, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Dec 6, 2011 12:19, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.05 mg/l , sample collected Dec 6, 2011 12:19, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Oct 1, 2011 – Dec 31, 2011
Collected
Aug 23, 2011 12:21
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
110824-009HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 23, 2011 12:21, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.008 mg/l , sample collected Aug 23, 2011 12:21, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Aug 23, 2011 12:21, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 23, 2011 12:21, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 23, 2011 12:21, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.01 mg/l , sample collected Aug 23, 2011 12:21, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jul 1, 2011 – Sep 30, 2011
Collected
Aug 23, 2011 12:10
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
110824-009TH
Laboratory
MSDH Lab
8.67 ug/l , sample collected Aug 23, 2011 12:10, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 12:10, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 12:10, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 23, 2011 12:10, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
8.67 ug/l , sample collected Aug 23, 2011 12:10, sampling point MRT000 TTHM 2950 EPA method 524.2 Jul 1, 2011 – Sep 30, 2011
Collected
Jun 22, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110624-032PB
Laboratory
MSDH Lab
0.0194 mg/l , sample collected Jun 22, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0007 mg/l , sample collected Jun 22, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 21, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110624-037PB
Laboratory
MSDH Lab
0.0132 mg/l , sample collected Jun 21, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.001 mg/l , sample collected Jun 21, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 21, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110624-036PB
Laboratory
MSDH Lab
0.0788 mg/l , sample collected Jun 21, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 21, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 21, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110624-035PB
Laboratory
MSDH Lab
0.0598 mg/l , sample collected Jun 21, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.001 mg/l , sample collected Jun 21, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 21, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110624-034PB
Laboratory
MSDH Lab
0.3715 mg/l , sample collected Jun 21, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0011 mg/l , sample collected Jun 21, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 21, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110624-033PB
Laboratory
MSDH Lab
0.0156 mg/l , sample collected Jun 21, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0043 mg/l , sample collected Jun 21, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011

Routine (10).