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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 41–50 of 281 samples, newest first — collected May 12, 2021 to July 27, 2021. The summary above covers all 281.

18 results from the 10 samples listed here: 12 detected, 6 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 4 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 41 to 50 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
Jul 27, 2021 06:30
Sampling point
LC0006 Location withheld
Sample type
Routine
Lab sample
PB-210728-035
Laboratory
MSDH Lab
0.103 mg/l , sample collected Jul 27, 2021 06:30, sampling point LC0006 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.5 ug/l , sample collected Jul 27, 2021 06:30, sampling point LC0006 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 27, 2021 08:00
Sampling point
DS000
Sample type
Routine
Lab sample
PB-210728-034
Laboratory
MSDH Lab
0.303 mg/l , sample collected Jul 27, 2021 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.6 ug/l , sample collected Jul 27, 2021 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 27, 2021 06:54
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-210728-037
Laboratory
MSDH Lab
0.0493 mg/l , sample collected Jul 27, 2021 06:54, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 27, 2021 06:54, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 27, 2021 03:30
Sampling point
DS000
Sample type
Routine
Lab sample
PB-210728-036
Laboratory
MSDH Lab
0.253 mg/l , sample collected Jul 27, 2021 03:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.9 ug/l , sample collected Jul 27, 2021 03:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 27, 2021 06:00
Sampling point
LC0001 Location withheld
Sample type
Routine
Lab sample
PB-210728-040
Laboratory
MSDH Lab
0.358 mg/l , sample collected Jul 27, 2021 06:00, sampling point LC0001 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 27, 2021 06:00, sampling point LC0001 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 27, 2021 05:15
Sampling point
DS000
Sample type
Routine
Lab sample
PB-210728-038
Laboratory
MSDH Lab
0.296 mg/l , sample collected Jul 27, 2021 05:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 27, 2021 05:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 27, 2021 07:00
Sampling point
LC0002 Location withheld
Sample type
Routine
Lab sample
PB-210728-039
Laboratory
MSDH Lab
0.0276 mg/l , sample collected Jul 27, 2021 07:00, sampling point LC0002 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 27, 2021 07:00, sampling point LC0002 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 26, 2021 21:04
Sampling point
DS000
Sample type
Routine
Lab sample
PB-210728-033
Laboratory
MSDH Lab
0.621 mg/l , sample collected Jul 26, 2021 21:04, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.7 ug/l , sample collected Jul 26, 2021 21:04, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
May 12, 2021 12:30
Sampling point
TF101
Sample type
Routine
Lab sample
RU-210513-006
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2021 12:30, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
May 12, 2021 12:30
Sampling point
TF101
Sample type
Routine
Lab sample
CN-210513-035
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 12, 2021 12:30, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022

Routine (10).