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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 81–90 of 215 samples, newest first — collected July 8, 2017 to July 10, 2017. The summary above covers all 215.

20 results from the 10 samples listed here: 15 detected, 5 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.

Chemical and radiological sample results for Rock Hill Water Association, every result from 81 to 90 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
Jul 10, 2017 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170712-227PB
Laboratory
MSDH Lab
0.2145 mg/l , sample collected Jul 10, 2017 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 10, 2017 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 10, 2017 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170712-225PB
Laboratory
MSDH Lab
0.0075 mg/l , sample collected Jul 10, 2017 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 10, 2017 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 10, 2017 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170712-224PB
Laboratory
MSDH Lab
0.0146 mg/l , sample collected Jul 10, 2017 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 10, 2017 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 10, 2017 07:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170712-223PB
Laboratory
MSDH Lab
0.2703 mg/l , sample collected Jul 10, 2017 07:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0006 mg/l , sample collected Jul 10, 2017 07:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 10, 2017 09:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170712-222PB
Laboratory
MSDH Lab
0.0045 mg/l , sample collected Jul 10, 2017 09:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0005 mg/l , sample collected Jul 10, 2017 09:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 10, 2017 06:50
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170712-220PB
Laboratory
MSDH Lab
0.0898 mg/l , sample collected Jul 10, 2017 06:50, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0032 mg/l , sample collected Jul 10, 2017 06:50, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 10, 2017 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170712-219PB
Laboratory
MSDH Lab
0.1161 mg/l , sample collected Jul 10, 2017 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 10, 2017 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 10, 2017 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170712-218PB
Laboratory
MSDH Lab
0.0045 mg/l , sample collected Jul 10, 2017 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0007 mg/l , sample collected Jul 10, 2017 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 9, 2017 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170712-226PB
Laboratory
MSDH Lab
0.4322 mg/l , sample collected Jul 9, 2017 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 9, 2017 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 8, 2017 05:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170712-221PB
Laboratory
MSDH Lab
0.3725 mg/l , sample collected Jul 8, 2017 05:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0014 mg/l , sample collected Jul 8, 2017 05:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017

Routine (10).