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.
| 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 231–240 of 252 samples, newest first — collected December 14, 2004 to October 12, 2005. The summary above covers all 252.
22 results from the 10 samples listed here: 10 detected, 12 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.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 12, 2005, sampling point TF101 | Nitrate-Nitrite 1038 EPA method 353.2 | Not recorded |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Oct 12, 2005, sampling point TF101 | Nitrate 1040 EPA method 353.2 | Not recorded |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Oct 12, 2005, sampling point TF101 | Nitrite 1041 EPA method 353.2 | Not recorded |
|
||
| 0.109 mg/l , sample collected Sep 20, 2005, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jul 1, 2005 – Sep 30, 2005 |
|
||
| 157 ug/l , sample collected Sep 20, 2005, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jul 1, 2005 – Sep 30, 2005 |
|
||
| 0.118 mg/l , sample collected May 26, 2005, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Apr 1, 2005 – Jun 30, 2005 |
|
||
| 145 ug/l , sample collected May 26, 2005, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Apr 1, 2005 – Jun 30, 2005 |
|
||
| Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Apr 20, 2005, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Not recorded |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 20, 2005, sampling point TF101 | Arsenic 1005 EPA method 200.8 | Not recorded |
| 0.005605 mg/l , sample collected Apr 20, 2005, sampling point TF101 | Barium 1010 EPA method 200.8 | Not recorded |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Apr 20, 2005, sampling point TF101 | Cadmium 1015 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 20, 2005, sampling point TF101 | Chromium 1020 EPA method 200.8 | Not recorded |
| 0.624037 mg/l , sample collected Apr 20, 2005, sampling point TF101 | Fluoride 1025 EPA method 380-75WE | Not recorded |
| Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Apr 20, 2005, sampling point TF101 | Mercury 1035 EPA method 200.8 | Not recorded |
| 0.000697 mg/l , sample collected Apr 20, 2005, sampling point TF101 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 20, 2005, sampling point TF101 | Selenium 1045 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 20, 2005, sampling point TF101 | Antimony, Total 1074 EPA method 200.8 | Not recorded |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Apr 20, 2005, sampling point TF101 | Beryllium, Total 1075 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 20, 2005, sampling point TF101 | Thallium, Total 1085 EPA method 200.8 | Not recorded |
|
||
| 0.194 mg/l , sample collected Mar 16, 2005, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2005 – Mar 31, 2005 |
|
||
| 139 ug/l , sample collected Mar 16, 2005, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2005 – Mar 31, 2005 |
|
||
| 0.114 mg/l , sample collected Dec 14, 2004, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Oct 1, 2004 – Dec 31, 2004 |
-
- Collected
- Oct 12, 2005
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 051013-037NI
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Sep 20, 2005
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 050921-006HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2005 – Sep 30, 2005
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.109 mg/l
-
- Collected
- Sep 20, 2005
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 050921-005TH
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2005 – Sep 30, 2005
-
TTHM 2950 EPA method 524.2
- Result
- 157 ug/l
-
- Collected
- May 26, 2005
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 050527-011HA
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2005 – Jun 30, 2005
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.118 mg/l
-
- Collected
- May 26, 2005
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 050527-011TH
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2005 – Jun 30, 2005
-
TTHM 2950 EPA method 524.2
- Result
- 145 ug/l
-
- Collected
- Apr 20, 2005
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 050421-039CN
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.005 mg/l Minimum Reporting Level
-
- Collected
- Apr 20, 2005
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 050421-023IN
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
Barium 1010 EPA method 200.8
- Result
- 0.005605 mg/l
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
-
Chromium 1020 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
Fluoride 1025 EPA method 380-75WE
- Result
- 0.624037 mg/l
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0002 mg/l Minimum Reporting Level
-
Nickel 1036 EPA method 200.8
- Result
- 0.000697 mg/l
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Mar 16, 2005
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 050317-006HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Mar 31, 2005
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.194 mg/l
-
- Collected
- Mar 16, 2005
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 050317-006TH
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Mar 31, 2005
-
TTHM 2950 EPA method 524.2
- Result
- 139 ug/l
-
- Collected
- Dec 14, 2004
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 041215-012HA
- Laboratory
- MSDH Lab
- Monitoring period
- Oct 1, 2004 – Dec 31, 2004
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.114 mg/l
Routine (10).