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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

MS0090001 , Atlanta Water System, Inc.

21 of the 57 analytes this system has been tested for have been detected at least once, across 323 samples on record.

The other 36 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 323 samples on record, detections range from September 14, 1993 to July 19, 2026. 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 Atlanta Water System, Inc., 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
Lead 1030 Inorganic Chemical 114 of 137 results Sep 14, 1993 Sep 12, 2023
Copper, Free 1022 Inorganic Chemical 78 of 137 results Sep 14, 1993 Sep 12, 2023
Fluoride 1025 Inorganic Chemical 24 of 24 results Jul 23, 2002 Jul 19, 2026
Barium 1010 Inorganic Chemical 24 of 24 results Jul 23, 2002 Jun 14, 2026
Selenium 1045 Inorganic Chemical 20 of 24 results Jul 23, 2002 Jun 14, 2026
Arsenic 1005 Inorganic Chemical 14 of 24 results Jul 23, 2002 Jan 14, 2025
TTHM 2950 Organic Chemical 12 of 22 results Jul 9, 2007 Apr 20, 2026
Chromium 1020 Inorganic Chemical 12 of 24 results Jul 23, 2002 Jan 14, 2025
Nitrate 1040 Inorganic Chemical 10 of 51 results Aug 24, 2005 Feb 10, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 7, 2011 Jul 11, 2012
Sodium 1052 Inorganic Chemical 8 of 8 results Oct 1, 2019 Jun 14, 2026
Bromoform 2942 Organic Chemical 8 of 16 results Jul 9, 2007 Apr 20, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 22 results Jul 9, 2007 Apr 9, 2025
Nickel 1036 Inorganic Chemical 7 of 22 results Feb 14, 2005 Jan 14, 2025
Dibromochloromethane 2944 Organic Chemical 6 of 16 results Jul 9, 2007 Apr 20, 2026
Nitrate-Nitrite 1038 Inorganic Chemical 6 of 51 results Aug 24, 2005 Feb 10, 2025
Nitrite 1041 Inorganic Chemical 2 of 51 results Feb 10, 2025 Feb 10, 2025
Dibromoacetic Acid 2454 Organic Chemical 2 of 15 results Jul 15, 2020 Dec 12, 2023
Xylenes, Total 2955 Organic Chemical 2 of 30 results Jan 28, 2004 Sep 1, 2011
Cyanide 1024 Inorganic Chemical 1 of 21 results Feb 8, 2021 Feb 8, 2021
Dichloroacetic Acid 2451 Organic Chemical 1 of 15 results Jul 12, 2011 Jul 12, 2011

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 161–170 of 323 samples, newest first — collected June 29, 2011 to June 29, 2011. The summary above covers all 323.

20 results from the 10 samples listed here: 19 detected, 1 not detected. Across the whole record it is 368 of 1,586. 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 Atlanta Water System, Inc., every result from 161 to 170 of 323 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
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-121PB
Laboratory
MSDH Lab
0.2339 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0014 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-122PB
Laboratory
MSDH Lab
0.1246 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0014 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-120PB
Laboratory
MSDH Lab
0.2557 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.001 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-119PB
Laboratory
MSDH Lab
0.1688 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0008 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-103PB
Laboratory
MSDH Lab
0.014 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-102PB
Laboratory
MSDH Lab
0.6005 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0007 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-101PB
Laboratory
MSDH Lab
0.4498 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0008 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-100PB
Laboratory
MSDH Lab
0.549 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0007 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-099PB
Laboratory
MSDH Lab
0.1325 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0006 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-098PB
Laboratory
MSDH Lab
0.0129 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0008 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011

Routine (10).