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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

MS0180022 , S MS Public Water Auth-Rock Hill

19 of the 56 analytes this system has been tested for have been detected at least once, across 281 samples on record.

The other 37 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 281 samples on record, detections range from May 19, 2004 to August 4, 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 S MS Public Water Auth-Rock Hill, 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 113 of 113 results Jun 26, 2007 Aug 13, 2024
Lead 1030 Inorganic Chemical 69 of 113 results Jun 26, 2007 Aug 13, 2024
TTHM 2950 Organic Chemical 44 of 45 results May 19, 2004 Aug 4, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 42 of 47 results May 19, 2004 Aug 6, 2024
Chloroform 2941 Organic Chemical 36 of 37 results Sep 12, 2006 Aug 4, 2025
Bromodichloromethane 2943 Organic Chemical 33 of 37 results Sep 12, 2006 Aug 4, 2025
Dichloroacetic Acid 2451 Organic Chemical 30 of 34 results Jan 29, 2008 Aug 6, 2024
Trichloroacetic Acid 2452 Organic Chemical 30 of 34 results Jan 29, 2008 Aug 6, 2024
Xylenes, Total 2955 Organic Chemical 13 of 30 results Jul 14, 2004 Jul 13, 2009
Barium 1010 Inorganic Chemical 10 of 10 results Nov 15, 2004 Feb 4, 2025
Fluoride 1025 Inorganic Chemical 9 of 10 results Nov 15, 2004 Feb 4, 2025
Monochloroacetic Acid 2450 Organic Chemical 8 of 34 results Apr 29, 2008 Jun 26, 2018
Dibromochloromethane 2944 Organic Chemical 7 of 37 results Apr 29, 2008 Aug 4, 2025
Chromium 1020 Inorganic Chemical 5 of 10 results Mar 2, 2005 Jan 26, 2021
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 12, 2011 Jul 10, 2012
Ethylbenzene 2992 Organic Chemical 4 of 30 results Jul 14, 2004 May 12, 2008
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 23, 2019 Jan 30, 2024
Nickel 1036 Inorganic Chemical 2 of 10 results Apr 2, 2008 Apr 16, 2014
Selenium 1045 Inorganic Chemical 2 of 10 results Mar 2, 2005 Feb 6, 2006

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 81–90 of 281 samples, newest first — collected June 23, 2015 to November 7, 2017. The summary above covers all 281.

39 results from the 10 samples listed here: 20 detected, 19 not detected. Across the whole record it is 465 of 1,480. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

We withheld the location of 2 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for S MS Public Water Auth-Rock Hill, every result from 81 to 90 of 281 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
Nov 7, 2017 13:10
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
171108-005TH
Laboratory
MSDH Lab
21.3 ug/l , sample collected Nov 7, 2017 13:10, sampling point SMT Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 7, 2017 13:10, sampling point SMT Bromoform 2942 EPA method 524.2 Not recorded
4.72 ug/l , sample collected Nov 7, 2017 13:10, sampling point SMT Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 7, 2017 13:10, sampling point SMT Dibromochloromethane 2944 EPA method 524.2 Not recorded
26 ug/l , sample collected Nov 7, 2017 13:10, sampling point SMT TTHM 2950 Jan 1, 2017 – Dec 31, 2017
Collected
Jan 30, 2017 13:40
Sampling point
TF101
Sample type
Routine
Lab sample
170131-024NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 30, 2017 13:40, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 30, 2017 13:40, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 30, 2017 13:40, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Sep 27, 2016 02:17
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
160928-006TH
Laboratory
MSDH Lab
17.4 ug/l , sample collected Sep 27, 2016 02:17, sampling point SMH Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 27, 2016 02:17, sampling point SMH Bromoform 2942 EPA method 524.2 Not recorded
3.8 ug/l , sample collected Sep 27, 2016 02:17, sampling point SMH Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 27, 2016 02:17, sampling point SMH Dibromochloromethane 2944 EPA method 524.2 Not recorded
21.2 ug/l , sample collected Sep 27, 2016 02:17, sampling point SMH TTHM 2950 Jan 1, 2016 – Dec 31, 2016
Collected
Sep 27, 2016 01:42
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
160928-006HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Sep 27, 2016 01:42, sampling point SMT Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.017 mg/l , sample collected Sep 27, 2016 01:42, sampling point SMT Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.015 mg/l , sample collected Sep 27, 2016 01:42, sampling point SMT Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 27, 2016 01:42, sampling point SMT Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 27, 2016 01:42, sampling point SMT Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.032 mg/l , sample collected Sep 27, 2016 01:42, sampling point SMT Total Haloacetic Acids (Haa5) 2456 Jan 1, 2016 – Dec 31, 2016
Collected
Mar 28, 2016 12:45
Sampling point
TF101
Sample type
Routine
Lab sample
160329-066NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 28, 2016 12:45, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 28, 2016 12:45, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 28, 2016 12:45, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Jul 20, 2015 01:00
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
150721-022TH
Laboratory
MSDH Lab
55.1 ug/l , sample collected Jul 20, 2015 01:00, sampling point SMT Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 20, 2015 01:00, sampling point SMT Bromoform 2942 EPA method 524.2 Not recorded
7.88 ug/l , sample collected Jul 20, 2015 01:00, sampling point SMT Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.05 ug/l , sample collected Jul 20, 2015 01:00, sampling point SMT Dibromochloromethane 2944 EPA method 524.2 Not recorded
64 ug/l , sample collected Jul 20, 2015 01:00, sampling point SMT TTHM 2950 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Collected
Jul 20, 2015 01:30
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
150721-022HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jul 20, 2015 01:30, sampling point SMH Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.008 mg/l , sample collected Jul 20, 2015 01:30, sampling point SMH Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.01 mg/l , sample collected Jul 20, 2015 01:30, sampling point SMH Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 20, 2015 01:30, sampling point SMH Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 20, 2015 01:30, sampling point SMH Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.02 mg/l , sample collected Jul 20, 2015 01:30, sampling point SMH Total Haloacetic Acids (Haa5) 2456 Jan 1, 2015 – Dec 31, 2015
Collected
Jun 23, 2015 08:20
Sampling point
DS000
Sample type
Routine
Lab sample
150624-010PB
Laboratory
MSDH Lab
0.0941 mg/l , sample collected Jun 23, 2015 08:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 23, 2015 08:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
Collected
Jun 23, 2015 06:00
Sampling point
DS000
Sample type
Routine
Lab sample
150624-009PB
Laboratory
MSDH Lab
0.0965 mg/l , sample collected Jun 23, 2015 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
0.001 mg/l , sample collected Jun 23, 2015 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
Collected
Jun 23, 2015 06:33
Sampling point
DS000
Sample type
Routine
Lab sample
150624-008PB
Laboratory
MSDH Lab
0.1441 mg/l , sample collected Jun 23, 2015 06:33, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 23, 2015 06:33, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2013 – Dec 31, 2015

Routine (10).