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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; the list of samples further down is narrowed.

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

Showing samples collected between September 26, 2024 and September 26, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The table below lists 11–13 of 13 samples, newest first — collected October 14, 2024 to November 18, 2024. The summary above covers all 13.

23 results from the 3 samples listed here: 0 detected, 23 not detected. 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 Rock Hill Water Association, every result from 11 to 13 of 13 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 18, 2024 13:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-128617-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 13:00, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 13:00, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 13:00, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 13:00, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 13:00, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 13:00, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 13:00, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 13:00, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 13:00, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 13:00, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 13:00, sampling point SM1 TTHM 2950 EPA method 524.2 Oct 1, 2024 – Dec 31, 2024
Collected
Nov 18, 2024 12:10
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-128617-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 12:10, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 12:10, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 12:10, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 12:10, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 12:10, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 12:10, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 12:10, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 12:10, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 12:10, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 12:10, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 18, 2024 12:10, sampling point SM2 TTHM 2950 EPA method 524.2 Oct 1, 2024 – Dec 31, 2024
Collected
Oct 14, 2024 13:10
Sampling point
TF102
Sample type
Routine
Lab sample
CN-241015-008
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 14, 2024 13:10, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2022 – Dec 31, 2024

Routine (3).