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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 101–110 of 323 samples, newest first — collected August 13, 2014 to May 15, 2017. The summary above covers all 323.

57 results from the 10 samples listed here: 3 detected, 54 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 101 to 110 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
May 15, 2017 01:00
Sampling point
TF103 Treatmnt Plant T103
Sample type
Routine
Lab sample
170516-007IN
Laboratory
MSDH Lab
0.0007 mg/l , sample collected May 15, 2017 01:00, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0274 mg/l , sample collected May 15, 2017 01:00, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2017 01:00, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2017 01:00, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
1.38 mg/l , sample collected May 15, 2017 01:00, sampling point TF103 Fluoride 1025 EPA method 300.0 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2017 01:00, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2017 01:00, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2017 01:00, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2017 01:00, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2017 01:00, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2017 01:00, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
May 9, 2017 01:15
Sampling point
TF103 Treatmnt Plant T103
Sample type
Routine
Lab sample
170510-005CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 9, 2017 01:15, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2016 – Dec 31, 2018
Collected
Jan 17, 2017 12:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
170118-109NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 17, 2017 12:30, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 17, 2017 12:30, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 17, 2017 12:30, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Jan 17, 2017 12:50
Sampling point
TF103 Treatmnt Plant T103
Sample type
Routine
Lab sample
170118-099NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 17, 2017 12:50, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 17, 2017 12:50, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 17, 2017 12:50, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Nov 30, 2016 12:55
Sampling point
TF103 Treatmnt Plant T103
Sample type
Routine
Lab sample
161201-035NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 30, 2016 12:55, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 30, 2016 12:55, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 30, 2016 12:55, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Nov 30, 2016 12:35
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
161201-004NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 30, 2016 12:35, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 30, 2016 12:35, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 30, 2016 12:35, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Jun 16, 2015 12:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
150617-001VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 12:40, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Collected
Jan 20, 2015 12:45
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
150121-097NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 12:45, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 12:45, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 12:45, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Jan 20, 2015 13:05
Sampling point
TF103 Treatmnt Plant T103
Sample type
Routine
Lab sample
150121-095NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:05, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:05, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:05, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Aug 13, 2014 12:15
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
140814-032HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 13, 2014 12:15, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 13, 2014 12:15, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 13, 2014 12:15, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 13, 2014 12:15, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 13, 2014 12:15, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Aug 13, 2014 12:15, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2014 – Dec 31, 2016

Routine (10).