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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

MS0530017 , Rock Hill Water Association

16 of the 57 analytes this system has been tested for have been detected at least once, across 215 samples on record.

The other 41 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 215 samples on record, detections range from October 13, 2003 to March 17, 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 Rock Hill Water Association, 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 64 of 65 results Aug 21, 2007 Sep 11, 2023
Lead 1030 Inorganic Chemical 19 of 65 results Aug 21, 2007 Sep 11, 2023
Barium 1010 Inorganic Chemical 15 of 15 results Oct 13, 2003 Mar 17, 2025
Fluoride 1025 Inorganic Chemical 11 of 16 results Oct 13, 2003 Mar 17, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 7, 2011 Jul 11, 2012
Arsenic 1005 Inorganic Chemical 8 of 15 results Mar 15, 2004 Mar 17, 2025
Chromium 1020 Inorganic Chemical 8 of 15 results Oct 13, 2003 Apr 28, 2020
Combined Radium (-226 & -228) 4010 Radionuclide 5 of 10 results Dec 7, 2011 Jul 11, 2012
Radium-226 4020 Radionuclide 5 of 10 results Dec 7, 2011 Jul 11, 2012
TTHM 2950 Organic Chemical 4 of 19 results Aug 27, 2007 Sep 9, 2024
Nickel 1036 Inorganic Chemical 3 of 15 results Mar 15, 2004 Mar 31, 2014
Selenium 1045 Inorganic Chemical 3 of 15 results Mar 15, 2004 Mar 20, 2006
Bromoform 2942 Organic Chemical 2 of 14 results Sep 9, 2024 Sep 9, 2024
Sodium 1052 Inorganic Chemical 2 of 2 results Sep 23, 2019 Sep 23, 2019
Xylenes, Total 2955 Organic Chemical 2 of 31 results Feb 23, 2010 Apr 18, 2011
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 1 of 19 results Jun 21, 2010 Jun 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 211–215 of 215 samples, newest first — collected October 13, 2003 to March 15, 2004. The summary above covers all 215.

47 results from the 5 samples listed here: 8 detected, 39 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 Rock Hill Water Association, every result from 211 to 215 of 215 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
Mar 15, 2004
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
040316-072CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Mar 15, 2004, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Mar 15, 2004
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
040316-048IN
Laboratory
MSDH Lab
0.001 mg/l , sample collected Mar 15, 2004, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.056 mg/l , sample collected Mar 15, 2004, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 15, 2004, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Mar 15, 2004, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.118 mg/l , sample collected Mar 15, 2004, sampling point TF101 Fluoride 1025 EPA method 300.0 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 15, 2004, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.001 mg/l , sample collected Mar 15, 2004, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
0.001 mg/l , sample collected Mar 15, 2004, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 2.5 mg/l Minimum Reporting Level , sample collected Mar 15, 2004, sampling point TF101 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Mar 15, 2004, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Mar 15, 2004, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 15, 2004, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Collected
Feb 23, 2004
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
040224-041VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 1,2,4-Trichlorobenzene 2378 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Cis-1,2-Dichloroethylene 2380 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Xylenes, Total 2955 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Dichloromethane 2964 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 O-Dichlorobenzene 2968 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 P-Dichlorobenzene 2969 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Vinyl Chloride 2976 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 1,1-Dichloroethylene 2977 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Trans-1,2-Dichloroethylene 2979 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 1,2-Dichloroethane 2980 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 1,1,1-Trichloroethane 2981 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Carbon Tetrachloride 2982 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 1,2-Dichloropropane 2983 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Trichloroethylene 2984 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 1,1,2-Trichloroethane 2985 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Tetrachloroethylene 2987 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Chlorobenzene 2989 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Benzene 2990 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Toluene 2991 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Ethylbenzene 2992 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF101 Styrene 2996 Jan 1, 2004 – Mar 31, 2004
Collected
Oct 13, 2003
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
031014-078CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 13, 2003, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Oct 13, 2003
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
031014-063IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 13, 2003, sampling point TF101 Arsenic 1005 EPA method 200.8 Not recorded
0.058 mg/l , sample collected Oct 13, 2003, sampling point TF101 Barium 1010 EPA method 200.8 Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Oct 13, 2003, sampling point TF101 Cadmium 1015 EPA method 200.8 Not recorded
0.001 mg/l , sample collected Oct 13, 2003, sampling point TF101 Chromium 1020 EPA method 200.8 Not recorded
0.11 mg/l , sample collected Oct 13, 2003, sampling point TF101 Fluoride 1025 EPA method 300.0 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 13, 2003, sampling point TF101 Mercury 1035 EPA method 200.8 Not recorded
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Oct 13, 2003, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 13, 2003, sampling point TF101 Selenium 1045 EPA method 200.8 Not recorded
Not detected below 2.5 mg/l Minimum Reporting Level , sample collected Oct 13, 2003, sampling point TF101 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 13, 2003, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Not recorded
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Oct 13, 2003, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 13, 2003, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Not recorded

Routine (5).