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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

MS0490023 , Hays Creek W/A-Minerva #2

19 of the 56 analytes this system has been tested for have been detected at least once, across 215 samples on record.

The other 37 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 8, 2003 to November 19, 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 Hays Creek W/A-Minerva #2, 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 120 of 120 results Sep 22, 2004 Aug 19, 2024
Lead 1030 Inorganic Chemical 54 of 120 results Sep 22, 2004 Aug 19, 2024
TTHM 2950 Organic Chemical 11 of 18 results Jul 19, 2004 Nov 19, 2025
Barium 1010 Inorganic Chemical 9 of 9 results Oct 8, 2003 Mar 17, 2025
Fluoride 1025 Inorganic Chemical 9 of 9 results Oct 8, 2003 Mar 17, 2025
Chloroform 2941 Organic Chemical 8 of 13 results Aug 19, 2019 Nov 19, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 15, 2011 Jul 17, 2012
Bromodichloromethane 2943 Organic Chemical 4 of 13 results Aug 19, 2019 Nov 19, 2025
Dibromochloromethane 2944 Organic Chemical 4 of 13 results Aug 19, 2019 Nov 19, 2025
Chromium 1020 Inorganic Chemical 4 of 9 results Oct 8, 2003 Mar 8, 2016
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 16, 2019 Feb 24, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 3 of 19 results Jun 16, 2010 Sep 29, 2021
Trichloroacetic Acid 2452 Organic Chemical 2 of 14 results Aug 14, 2019 Nov 19, 2025
Bromoform 2942 Organic Chemical 2 of 13 results Aug 19, 2019 Nov 19, 2025
Dichloroacetic Acid 2451 Organic Chemical 2 of 14 results Aug 27, 2007 Aug 14, 2019
Nickel 1036 Inorganic Chemical 2 of 9 results Apr 29, 2013 May 6, 2019
Monobromoacetic Acid 2453 Organic Chemical 1 of 14 results Aug 14, 2019 Aug 14, 2019
Dibromoacetic Acid 2454 Organic Chemical 1 of 14 results Aug 14, 2019 Aug 14, 2019
Selenium 1045 Inorganic Chemical 1 of 9 results Apr 4, 2005 Apr 4, 2005

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 31–40 of 215 samples, newest first — collected August 4, 2021 to July 18, 2022. The summary above covers all 215.

34 results from the 10 samples listed here: 5 detected, 29 not detected. Across the whole record it is 245 of 836. 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 2 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 Hays Creek W/A-Minerva #2, every result from 31 to 40 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 18, 2022 10:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
VO-220719-007
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 18, 2022 10:00, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Jun 8, 2022 10:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-220609-006
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 8, 2022 10:00, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Jun 8, 2022 10:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-220609-006
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 8, 2022 10:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded
Collected
May 16, 2022 10:05
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-220517-024
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 16, 2022 10:05, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Mar 8, 2022 11:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NA-220309-036
Laboratory
MSDH Lab
97.7 mg/l , sample collected Mar 8, 2022 11:00, sampling point TF101 Sodium 1052 EPA method 200.7 Not recorded
Collected
Mar 8, 2022 11:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-220309-016
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 8, 2022 11:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 8, 2022 11:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 8, 2022 11:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Sep 29, 2021 12:15
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-210930-004
Laboratory
MSDH Lab
5.59 ug/l , sample collected Sep 29, 2021 12:15, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2021
Collected
Sep 29, 2021 12:15
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-210930-004
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 29, 2021 12:15, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Aug 4, 2021 07:00
Sampling point
LC0017 Location withheld
Sample type
Routine
Lab sample
PB-210805-045
Laboratory
MSDH Lab
0.0542 mg/l , sample collected Aug 4, 2021 07:00, sampling point LC0017 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
1 ug/l , sample collected Aug 4, 2021 07:00, sampling point LC0017 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Aug 4, 2021 07:00
Sampling point
LC0016 Location withheld
Sample type
Routine
Lab sample
PB-210805-050
Laboratory
MSDH Lab
0.132 mg/l , sample collected Aug 4, 2021 07:00, sampling point LC0016 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 4, 2021 07:00, sampling point LC0016 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021

Routine (10).