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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

MS0300044 , Gulf Park

44 of the 74 analytes this system has been tested for have been detected at least once, across 791 samples on record.

The other 30 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 791 samples on record, detections range from August 12, 2002 to June 17, 2026. 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 Gulf Park, 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 142 of 142 results Aug 30, 2007 Oct 15, 2024
TTHM 2950 Organic Chemical 115 of 115 results Sep 8, 2004 Feb 24, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 110 of 111 results Oct 27, 2005 Jun 17, 2026
Chloroform 2941 Organic Chemical 80 of 80 results Sep 20, 2006 Feb 24, 2026
Dichloroacetic Acid 2451 Organic Chemical 76 of 76 results Jan 31, 2008 Jun 17, 2026
Trichloroacetic Acid 2452 Organic Chemical 73 of 76 results Jan 31, 2008 Jun 17, 2026
Fluoride 1025 Inorganic Chemical 73 of 73 results Sep 15, 2003 Apr 14, 2025
Lead 1030 Inorganic Chemical 73 of 142 results Aug 30, 2007 Oct 15, 2024
Bromodichloromethane 2943 Organic Chemical 71 of 80 results Sep 20, 2006 Feb 24, 2026
Barium 1010 Inorganic Chemical 68 of 68 results Sep 15, 2003 Apr 14, 2025
Chromium 1020 Inorganic Chemical 38 of 68 results Sep 15, 2003 Apr 14, 2025
Dibromochloromethane 2944 Organic Chemical 25 of 80 results Sep 20, 2006 Feb 24, 2026
Gross Alpha, Incl. Radon & U 4002 Radionuclide 17 of 17 results Dec 15, 2011 Mar 30, 2015
Sulfate 1055 Inorganic Chemical 17 of 19 results Sep 15, 2003 Dec 2, 2008
Dibromoacetic Acid 2454 Organic Chemical 14 of 76 results Jun 8, 2015 Jun 6, 2019
Sodium 1052 Inorganic Chemical 13 of 13 results Dec 2, 2008 Feb 20, 2024
Bromoform 2942 Organic Chemical 13 of 80 results Sep 20, 2006 Nov 29, 2016
Selenium 1045 Inorganic Chemical 13 of 68 results Feb 23, 2004 Feb 15, 2006
Monochloroacetic Acid 2450 Organic Chemical 10 of 76 results Jan 31, 2008 Dec 12, 2019
Arsenic 1005 Inorganic Chemical 5 of 68 results Mar 16, 2005 Feb 21, 2023
Calcium 1016 Inorganic Chemical 5 of 5 results Dec 2, 2008 Dec 2, 2008
Chloride 1017 Inorganic Chemical 5 of 5 results Dec 2, 2008 Dec 2, 2008
Manganese 1032 Inorganic Chemical 5 of 5 results Dec 2, 2008 Dec 2, 2008
Potassium 1042 Inorganic Chemical 5 of 5 results Dec 2, 2008 Dec 2, 2008
Residue, Total, Filterable 1057 Water Quality 5 of 5 results Dec 2, 2008 Dec 2, 2008
Alkalinity, Caco3 Stability 1067 Water Quality 5 of 5 results Dec 2, 2008 Dec 2, 2008
Carbon Dioxide 1901 Water Quality 5 of 5 results Dec 2, 2008 Dec 2, 2008
Color 1905 Water Quality 5 of 5 results Dec 2, 2008 Dec 2, 2008
Hardness, Total (As Caco3) 1915 Water Quality 5 of 5 results Dec 2, 2008 Dec 2, 2008
PH 1925 Water Quality 5 of 5 results Dec 2, 2008 Dec 2, 2008
Alkalinity, Total 1927 Water Quality 5 of 5 results Dec 2, 2008 Dec 2, 2008
Calculated Sodium NACA Water Quality 5 of 5 results Dec 2, 2008 Dec 2, 2008
PH, Field Result PHFD Water Quality 5 of 5 results Dec 2, 2008 Dec 2, 2008
Cadmium 1015 Inorganic Chemical 5 of 68 results Mar 16, 2005 Mar 16, 2005
Nickel 1036 Inorganic Chemical 4 of 68 results Jan 14, 2009 Apr 14, 2025
Temperature, Field Result TEMP Water Quality 4 of 4 results Dec 2, 2008 Dec 2, 2008
Cyanide 1024 Inorganic Chemical 3 of 71 results Sep 16, 2009 Aug 19, 2025
Xylenes, Total 2955 Organic Chemical 3 of 79 results Aug 12, 2002 Aug 18, 2003
Nitrate 1040 Inorganic Chemical 2 of 142 results May 17, 2004 Aug 10, 2005
Magnesium 1031 Inorganic Chemical 1 of 5 results Dec 2, 2008 Dec 2, 2008
Thallium, Total 1085 Inorganic Chemical 1 of 68 results Mar 16, 2005 Mar 16, 2005
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 142 results May 17, 2004 May 17, 2004
Mercury 1035 Inorganic Chemical 1 of 68 results Feb 23, 2004 Feb 23, 2004
Ethylbenzene 2992 Organic Chemical 1 of 79 results Aug 12, 2002 Aug 12, 2002

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 31–38 of 38 samples, newest first — collected October 9, 2024 to January 28, 2025. The summary above covers all 38.

11 results from the 8 samples listed here: 8 detected, 3 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 5 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 Gulf Park, every result from 31 to 38 of 38 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
Jan 28, 2025 12:01
Sampling point
TF110 Treatment Plant TF110
Sample type
Routine
Lab sample
RU-250129-002
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 28, 2025 12:01, sampling point TF110 Combined Uranium 4006 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Oct 15, 2024 07:37
Sampling point
LC0035 Location withheld
Sample type
Routine
Lab sample
PB-241016-003
Laboratory
MSDH Lab
0.0119 mg/l , sample collected Oct 15, 2024 07:37, sampling point LC0035 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 15, 2024 07:37, sampling point LC0035 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Oct 15, 2024 05:00
Sampling point
LC0020 Location withheld
Sample type
Routine
Lab sample
PB-241016-002
Laboratory
MSDH Lab
0.0439 mg/l , sample collected Oct 15, 2024 05:00, sampling point LC0020 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.6 ug/l , sample collected Oct 15, 2024 05:00, sampling point LC0020 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Oct 15, 2024 06:00
Sampling point
LC0031 Location withheld
Sample type
Routine
Lab sample
PB-241016-001
Laboratory
MSDH Lab
0.0366 mg/l , sample collected Oct 15, 2024 06:00, sampling point LC0031 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 15, 2024 06:00, sampling point LC0031 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Oct 9, 2024 11:25
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
TH-241010-030
Laboratory
MSDH Lab
36.5 ug/l , sample collected Oct 9, 2024 11:25, sampling point SM2 TTHM 2950 EPA method 524.2 Not recorded
Collected
Oct 9, 2024 10:54
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
TH-241010-029
Laboratory
MSDH Lab
43.3 ug/l , sample collected Oct 9, 2024 10:54, sampling point SM1 TTHM 2950 EPA method 524.2 Not recorded
Collected
Oct 9, 2024 11:23
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
HA-241010-030
Laboratory
MSDH Lab
15 ug/l , sample collected Oct 9, 2024 11:23, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Oct 9, 2024 10:51
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
HA-241010-029
Laboratory
MSDH Lab
17.4 ug/l , sample collected Oct 9, 2024 10:51, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded

Routine (8).