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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 21–30 of 215 samples, newest first — collected September 9, 2023 to January 8, 2024. The summary above covers all 215.

29 results from the 10 samples listed here: 14 detected, 15 not detected. Across the whole record it is 162 of 1,293. 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 9 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 Rock Hill Water Association, every result from 21 to 30 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
Jan 8, 2024 13:00
Sampling point
TF102
Sample type
Routine
Lab sample
IN-240109-034
Laboratory
MSDH Lab
0.0007 mg/l , sample collected Jan 8, 2024 13:00, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.0544 mg/l , sample collected Jan 8, 2024 13:00, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 8, 2024 13:00, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 8, 2024 13:00, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.147 mg/l , sample collected Jan 8, 2024 13:00, sampling point TF102 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 8, 2024 13:00, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 8, 2024 13:00, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jan 8, 2024 13:00, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 8, 2024 13:00, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 8, 2024 13:00, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 8, 2024 13:00, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Sep 11, 2023 08:50
Sampling point
LC0010 Location withheld
Sample type
Routine
Lab sample
PB-230913-010
Laboratory
MSDH Lab
0.0535 mg/l , sample collected Sep 11, 2023 08:50, sampling point LC0010 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.5 ug/l , sample collected Sep 11, 2023 08:50, sampling point LC0010 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 11, 2023 13:40
Sampling point
LC0001 Location withheld
Sample type
Routine
Lab sample
PB-230913-009
Laboratory
MSDH Lab
0.0039 mg/l , sample collected Sep 11, 2023 13:40, sampling point LC0001 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2023 13:40, sampling point LC0001 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 11, 2023 09:15
Sampling point
LC0011 Location withheld
Sample type
Routine
Lab sample
PB-230913-008
Laboratory
MSDH Lab
0.199 mg/l , sample collected Sep 11, 2023 09:15, sampling point LC0011 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2023 09:15, sampling point LC0011 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 11, 2023 09:50
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-230913-007
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 11, 2023 09:50, sampling point LC0003 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2023 09:50, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 10, 2023 08:30
Sampling point
LC0006 Location withheld
Sample type
Routine
Lab sample
PB-230913-006
Laboratory
MSDH Lab
0.408 mg/l , sample collected Sep 10, 2023 08:30, sampling point LC0006 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.6 ug/l , sample collected Sep 10, 2023 08:30, sampling point LC0006 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 9, 2023 10:00
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-230913-005
Laboratory
MSDH Lab
0.355 mg/l , sample collected Sep 9, 2023 10:00, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 9, 2023 10:00, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 9, 2023 09:00
Sampling point
LC0012 Location withheld
Sample type
Routine
Lab sample
PB-230913-004
Laboratory
MSDH Lab
0.009 mg/l , sample collected Sep 9, 2023 09:00, sampling point LC0012 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 9, 2023 09:00, sampling point LC0012 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 9, 2023 08:00
Sampling point
LC0008 Location withheld
Sample type
Routine
Lab sample
PB-230913-003
Laboratory
MSDH Lab
0.049 mg/l , sample collected Sep 9, 2023 08:00, sampling point LC0008 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
1.7 ug/l , sample collected Sep 9, 2023 08:00, sampling point LC0008 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 9, 2023 07:38
Sampling point
LC0007 Location withheld
Sample type
Routine
Lab sample
PB-230913-002
Laboratory
MSDH Lab
0.0093 mg/l , sample collected Sep 9, 2023 07:38, sampling point LC0007 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 9, 2023 07:38, sampling point LC0007 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023

Routine (10).