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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

MS0490004 , Hays Creek W/A-Mission Road

12 of the 13 analytes this system has been tested for have been detected at least once, across 86 samples on record.

The other 1 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 86 samples on record, detections range from July 19, 2004 to August 20, 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-Mission Road, 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 66 of 66 results Aug 5, 2008 Aug 20, 2025
Lead 1030 Inorganic Chemical 36 of 66 results Aug 5, 2008 Aug 20, 2025
TTHM 2950 Organic Chemical 10 of 10 results Jul 19, 2004 Apr 30, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 8 of 10 results Jun 13, 2007 Apr 30, 2025
Chloroform 2941 Organic Chemical 6 of 6 results Jun 13, 2007 Aug 22, 2017
Bromodichloromethane 2943 Organic Chemical 6 of 6 results Jun 13, 2007 Aug 22, 2017
Dibromochloromethane 2944 Organic Chemical 6 of 6 results Jun 13, 2007 Aug 22, 2017
Dichloroacetic Acid 2451 Organic Chemical 5 of 5 results Jul 8, 2008 Aug 22, 2017
Bromoform 2942 Organic Chemical 3 of 6 results Jun 13, 2007 Aug 24, 2009
Trichloroacetic Acid 2452 Organic Chemical 2 of 5 results Aug 4, 2014 Aug 22, 2017
Monochloroacetic Acid 2450 Organic Chemical 1 of 5 results Aug 22, 2017 Aug 22, 2017
Dibromoacetic Acid 2454 Organic Chemical 1 of 5 results Aug 24, 2009 Aug 24, 2009

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 86 samples, newest first — collected May 11, 2021 to October 5, 2021. The summary above covers all 86.

18 results from the 10 samples listed here: 10 detected, 8 not detected. Across the whole record it is 150 of 201. 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 4 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-Mission Road, every result from 31 to 40 of 86 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
Oct 5, 2021 08:00
Sampling point
LC0007 Location withheld
Sample type
Routine
Lab sample
PB-211007-027
Laboratory
MSDH Lab
0.0075 mg/l , sample collected Oct 5, 2021 08:00, sampling point LC0007 Copper, Free 1022 EPA method 200.8 Jul 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 5, 2021 08:00, sampling point LC0007 Lead 1030 EPA method 200.8 Jul 1, 2021 – Dec 31, 2021
Collected
Oct 5, 2021 07:00
Sampling point
LC0008 Location withheld
Sample type
Routine
Lab sample
PB-211007-028
Laboratory
MSDH Lab
0.0083 mg/l , sample collected Oct 5, 2021 07:00, sampling point LC0008 Copper, Free 1022 EPA method 200.8 Jul 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 5, 2021 07:00, sampling point LC0008 Lead 1030 EPA method 200.8 Jul 1, 2021 – Dec 31, 2021
Collected
Oct 5, 2021 07:30
Sampling point
LC0009 Location withheld
Sample type
Routine
Lab sample
PB-211007-029
Laboratory
MSDH Lab
0.0111 mg/l , sample collected Oct 5, 2021 07:30, sampling point LC0009 Copper, Free 1022 EPA method 200.8 Jul 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 5, 2021 07:30, sampling point LC0009 Lead 1030 EPA method 200.8 Jul 1, 2021 – Dec 31, 2021
Collected
Oct 5, 2021 07:30
Sampling point
LC0010 Location withheld
Sample type
Routine
Lab sample
PB-211007-030
Laboratory
MSDH Lab
0.0088 mg/l , sample collected Oct 5, 2021 07:30, sampling point LC0010 Copper, Free 1022 EPA method 200.8 Jul 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 5, 2021 07:30, sampling point LC0010 Lead 1030 EPA method 200.8 Jul 1, 2021 – Dec 31, 2021
Collected
Aug 16, 2021 12:15
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-210817-013
Laboratory
MSDH Lab
3.27 ug/l , sample collected Aug 16, 2021 12:15, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2019 – Dec 31, 2021
Collected
Aug 16, 2021 12:17
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-210817-013
Laboratory
MSDH Lab
6.62 ug/l , sample collected Aug 16, 2021 12:17, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2019 – Dec 31, 2021
Collected
May 11, 2021 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210517-010
Laboratory
MSDH Lab
0.0034 mg/l , sample collected May 11, 2021 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Jun 30, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 11, 2021 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2021 – Jun 30, 2021
Collected
May 11, 2021 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210517-009
Laboratory
MSDH Lab
0.005 mg/l , sample collected May 11, 2021 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Jun 30, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 11, 2021 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2021 – Jun 30, 2021
Collected
May 11, 2021 06:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210517-008
Laboratory
MSDH Lab
0.1 mg/l , sample collected May 11, 2021 06:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Jun 30, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 11, 2021 06:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2021 – Jun 30, 2021
Collected
May 11, 2021 07:00
Sampling point
LC0010 Location withheld
Sample type
Routine
Lab sample
PB-210517-007
Laboratory
MSDH Lab
0.0362 mg/l , sample collected May 11, 2021 07:00, sampling point LC0010 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Jun 30, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 11, 2021 07:00, sampling point LC0010 Lead 1030 EPA method 200.8 Jan 1, 2021 – Jun 30, 2021

Routine (10).