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
MS0310010 , Philadelphia Water Assn
26 of the 53 analytes this system has been tested for have been detected at least once, across 432 samples on record.
The other 27 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 432 samples on record, detections range from September 24, 2003 to July 30, 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.
| Analyte | Kind | Detected in | First detected | Last detected |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 77 of 77 results | Jul 24, 2007 | Jul 30, 2026 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 62 of 62 results | Sep 15, 2004 | Jun 25, 2026 |
| TTHM 2950 | Organic Chemical | 61 of 61 results | Sep 15, 2004 | Nov 18, 2024 |
| Lead 1030 | Inorganic Chemical | 51 of 77 results | Jul 24, 2007 | Jul 29, 2026 |
| Dibromochloromethane 2944 | Organic Chemical | 47 of 47 results | May 17, 2006 | Nov 18, 2024 |
| Chloroform 2941 | Organic Chemical | 46 of 47 results | May 17, 2006 | Nov 18, 2024 |
| Bromoform 2942 | Organic Chemical | 46 of 47 results | May 17, 2006 | Nov 18, 2024 |
| Bromodichloromethane 2943 | Organic Chemical | 46 of 47 results | May 17, 2006 | Nov 18, 2024 |
| Dichloroacetic Acid 2451 | Organic Chemical | 43 of 43 results | Sep 24, 2007 | Jun 25, 2026 |
| Trichloroacetic Acid 2452 | Organic Chemical | 43 of 43 results | Sep 24, 2007 | Jun 25, 2026 |
| Dibromoacetic Acid 2454 | Organic Chemical | 41 of 43 results | Sep 24, 2007 | Jun 25, 2026 |
| Barium 1010 | Inorganic Chemical | 30 of 30 results | Sep 24, 2003 | Feb 26, 2025 |
| Fluoride 1025 | Inorganic Chemical | 30 of 30 results | Sep 24, 2003 | Feb 26, 2025 |
| Chromium 1020 | Inorganic Chemical | 26 of 30 results | Sep 24, 2003 | May 16, 2022 |
| Sodium 1052 | Inorganic Chemical | 9 of 9 results | Sep 25, 2019 | Feb 5, 2025 |
| Xylenes, Total 2955 | Organic Chemical | 9 of 89 results | Aug 26, 2013 | Jul 31, 2017 |
| Arsenic 1005 | Inorganic Chemical | 9 of 30 results | Feb 23, 2004 | Jan 14, 2009 |
| Monochloroacetic Acid 2450 | Organic Chemical | 7 of 43 results | Apr 30, 2008 | Jul 16, 2013 |
| Nickel 1036 | Inorganic Chemical | 7 of 30 results | Mar 21, 2005 | Apr 11, 2012 |
| Sulfate 1055 | Inorganic Chemical | 6 of 6 results | Sep 24, 2003 | Feb 23, 2004 |
| Monobromoacetic Acid 2453 | Organic Chemical | 5 of 43 results | Aug 17, 2009 | Nov 13, 2017 |
| Selenium 1045 | Inorganic Chemical | 5 of 30 results | Feb 23, 2004 | Mar 21, 2005 |
| Cyanide 1024 | Inorganic Chemical | 3 of 30 results | Sep 14, 2009 | Apr 2, 2012 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 2 of 70 results | May 1, 2007 | Feb 21, 2023 |
| Nitrate 1040 | Inorganic Chemical | 2 of 70 results | May 1, 2007 | Feb 21, 2023 |
| Ethylbenzene 2992 | Organic Chemical | 1 of 89 results | Aug 26, 2013 | Aug 26, 2013 |
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 251–260 of 432 samples, newest first — collected April 11, 2012 to July 30, 2012. The summary above covers all 432.
39 results from the 10 samples listed here: 17 detected, 22 not detected. Across the whole record it is 714 of 3,149. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 30, 2012 13:10, sampling point TF103 | Combined Uranium 4006 EPA method 200.8 | Jul 1, 2012 – Sep 30, 2012 |
|
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 30, 2012 14:10, sampling point TF102 | Combined Uranium 4006 EPA method 200.8 | Jul 1, 2012 – Sep 30, 2012 |
|
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 30, 2012 13:50, sampling point TF101 | Combined Uranium 4006 EPA method 200.8 | Jul 1, 2012 – Sep 30, 2012 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 14, 2012 13:20, sampling point TF103 | Combined Uranium 4006 EPA method 200.8 | Apr 1, 2012 – Jun 30, 2012 |
|
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 14, 2012 14:10, sampling point TF102 | Combined Uranium 4006 EPA method 200.8 | Apr 1, 2012 – Jun 30, 2012 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 14, 2012 13:50, sampling point TF101 | Combined Uranium 4006 EPA method 200.8 | Apr 1, 2012 – Jun 30, 2012 |
|
||
| 14.1 ug/l , sample collected May 3, 2012 01:30, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| 6.46 ug/l , sample collected May 3, 2012 01:30, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 18.2 ug/l , sample collected May 3, 2012 01:30, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 22.9 ug/l , sample collected May 3, 2012 01:30, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 61.7 ug/l , sample collected May 3, 2012 01:30, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Apr 1, 2012 – Jun 30, 2012 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected May 3, 2012 01:30, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.008 mg/l , sample collected May 3, 2012 01:30, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.009 mg/l , sample collected May 3, 2012 01:30, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 3, 2012 01:30, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| 0.008 mg/l , sample collected May 3, 2012 01:30, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.025 mg/l , sample collected May 3, 2012 01:30, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Apr 1, 2012 – Jun 30, 2012 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:00, sampling point TF103 | Arsenic 1005 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.00214 mg/l , sample collected Apr 11, 2012 01:00, sampling point TF103 | Barium 1010 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:00, sampling point TF103 | Cadmium 1015 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.002 mg/l , sample collected Apr 11, 2012 01:00, sampling point TF103 | Chromium 1020 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.41 mg/l , sample collected Apr 11, 2012 01:00, sampling point TF103 | Fluoride 1025 EPA method 380-75WE | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:00, sampling point TF103 | Mercury 1035 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.00123 mg/l , sample collected Apr 11, 2012 01:00, sampling point TF103 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:00, sampling point TF103 | Selenium 1045 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:00, sampling point TF103 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:00, sampling point TF103 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:00, sampling point TF103 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
|
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:40, sampling point TF102 | Arsenic 1005 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.00571 mg/l , sample collected Apr 11, 2012 01:40, sampling point TF102 | Barium 1010 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:40, sampling point TF102 | Cadmium 1015 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.00082 mg/l , sample collected Apr 11, 2012 01:40, sampling point TF102 | Chromium 1020 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.208 mg/l , sample collected Apr 11, 2012 01:40, sampling point TF102 | Fluoride 1025 EPA method 380-75WE | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:40, sampling point TF102 | Mercury 1035 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.00356 mg/l , sample collected Apr 11, 2012 01:40, sampling point TF102 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:40, sampling point TF102 | Selenium 1045 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:40, sampling point TF102 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:40, sampling point TF102 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 11, 2012 01:40, sampling point TF102 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
-
- Collected
- Jul 30, 2012 13:10
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 120731-109RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2012 – Sep 30, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 30, 2012 14:10
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 120731-022RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2012 – Sep 30, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 30, 2012 13:50
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120731-021RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2012 – Sep 30, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- May 14, 2012 13:20
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 120515-089RU
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2012 – Jun 30, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- May 14, 2012 14:10
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 120515-066RU
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2012 – Jun 30, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- May 14, 2012 13:50
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120515-065RU
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2012 – Jun 30, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- May 3, 2012 01:30
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 120504-003TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 14.1 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- 6.46 ug/l
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 18.2 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 22.9 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 61.7 ug/l
- Monitoring period
- Apr 1, 2012 – Jun 30, 2012
-
- Collected
- May 3, 2012 01:30
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 120504-003HA
- Laboratory
- MSDH Lab
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 0.002 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- 0.008 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.009 mg/l
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- 0.008 mg/l
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.025 mg/l
- Monitoring period
- Apr 1, 2012 – Jun 30, 2012
-
- Collected
- Apr 11, 2012 01:00
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 120412-146IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Barium 1010 EPA method 200.8
- Result
- 0.00214 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Chromium 1020 EPA method 200.8
- Result
- 0.002 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Fluoride 1025 EPA method 380-75WE
- Result
- 0.41 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Nickel 1036 EPA method 200.8
- Result
- 0.00123 mg/l
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0025 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
- Collected
- Apr 11, 2012 01:40
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 120412-145IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Barium 1010 EPA method 200.8
- Result
- 0.00571 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Chromium 1020 EPA method 200.8
- Result
- 0.00082 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Fluoride 1025 EPA method 380-75WE
- Result
- 0.208 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Nickel 1036 EPA method 200.8
- Result
- 0.00356 mg/l
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0025 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
Routine (10).