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; the list of samples further down is narrowed.

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

Showing samples collected between September 26, 2024 and September 26, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The table below lists 11–11 of 11 samples, newest first — collected July 29, 2025 to July 29, 2025. The summary above covers all 11.

11 results from the 1 sample listed here: 4 detected, 7 not detected. 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 11 to 11 of 11 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 29, 2025 13:14 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample IN-250730-003 Laboratory MSDH Lab
0.0005 mg/l , sample collected Jul 29, 2025 13:14, sampling point TF101	Arsenic 1005 EPA method 200.8	Jan 1, 2025 – Dec 31, 2027
0.0043 mg/l , sample collected Jul 29, 2025 13:14, sampling point TF101	Barium 1010 EPA method 200.8	Jan 1, 2025 – Dec 31, 2027
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 29, 2025 13:14, sampling point TF101	Cadmium 1015 EPA method 200.8	Jan 1, 2025 – Dec 31, 2027
0.0033 mg/l , sample collected Jul 29, 2025 13:14, sampling point TF101	Chromium 1020 EPA method 200.8	Jan 1, 2025 – Dec 31, 2027
0.502 mg/l , sample collected Jul 29, 2025 13:14, sampling point TF101	Fluoride 1025 EPA method QC 10-109-12-2-A	Jan 1, 2025 – Dec 31, 2027
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 29, 2025 13:14, sampling point TF101	Mercury 1035 EPA method 200.8	Jan 1, 2025 – Dec 31, 2027
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 29, 2025 13:14, sampling point TF101	Nickel 1036 EPA method 200.8	Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jul 29, 2025 13:14, sampling point TF101	Selenium 1045 EPA method 200.8	Jan 1, 2025 – Dec 31, 2027
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 29, 2025 13:14, sampling point TF101	Antimony, Total 1074 EPA method 200.8	Jan 1, 2025 – Dec 31, 2027
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 29, 2025 13:14, sampling point TF101	Beryllium, Total 1075 EPA method 200.8	Jan 1, 2025 – Dec 31, 2027
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 29, 2025 13:14, sampling point TF101	Thallium, Total 1085 EPA method 200.8	Jan 1, 2025 – Dec 31, 2027

Collected
Jul 29, 2025 13:14

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
IN-250730-003

Laboratory
MSDH Lab
- Arsenic 1005 EPA method 200.8
  
  Result
  0.0005 mg/l
  
  Monitoring period
  Jan 1, 2025 – Dec 31, 2027
- Barium 1010 EPA method 200.8
  
  Result
  0.0043 mg/l
  
  Monitoring period
  Jan 1, 2025 – Dec 31, 2027
- Cadmium 1015 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2025 – Dec 31, 2027
- Chromium 1020 EPA method 200.8
  
  Result
  0.0033 mg/l
  
  Monitoring period
  Jan 1, 2025 – Dec 31, 2027
- Fluoride 1025 EPA method QC 10-109-12-2-A
  
  Result
  0.502 mg/l
  
  Monitoring period
  Jan 1, 2025 – Dec 31, 2027
- Mercury 1035 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2025 – Dec 31, 2027
- Nickel 1036 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Selenium 1045 EPA method 200.8
  
  Result
  Not detected below 0.0025 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2025 – Dec 31, 2027
- Antimony, Total 1074 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2025 – Dec 31, 2027
- Beryllium, Total 1075 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2025 – Dec 31, 2027
- Thallium, Total 1085 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2025 – Dec 31, 2027

Routine (1).