Chemical and radiological sample results

MS0270018 , Humphreys Co. W/A #1-Midnight

35 of the 72 analytes this system has been tested for have been detected at least once, across 287 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 287 samples on record, detections range from August 10, 1993 to April 7, 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 Humphreys Co. W/A #1-Midnight, 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	76 of 130 results	Aug 12, 1993	Jul 11, 2023
Lead 1030	Inorganic Chemical	44 of 130 results	Aug 10, 1993	Jul 11, 2023
Total Haloacetic Acids (Haa5) 2456	Organic Chemical	23 of 23 results	Jun 9, 2004	Apr 7, 2025
Barium 1010	Inorganic Chemical	22 of 22 results	Sep 24, 2003	Apr 7, 2025
TTHM 2950	Organic Chemical	19 of 21 results	Jun 9, 2004	Apr 7, 2025
Dichloroacetic Acid 2451	Organic Chemical	14 of 14 results	Jun 26, 2008	Aug 26, 2020
Fluoride 1025	Inorganic Chemical	13 of 23 results	Sep 24, 2003	Apr 7, 2025
Trichloroacetic Acid 2452	Organic Chemical	13 of 14 results	Jun 26, 2008	Apr 17, 2019
Chloroform 2941	Organic Chemical	13 of 14 results	Oct 12, 2006	Apr 17, 2019
Chromium 1020	Inorganic Chemical	9 of 22 results	Mar 21, 2005	Apr 7, 2025
Bromodichloromethane 2943	Organic Chemical	8 of 14 results	Oct 12, 2006	Sep 24, 2014
Monochloroacetic Acid 2450	Organic Chemical	6 of 14 results	Apr 13, 2009	Apr 17, 2019
Sodium 1052	Inorganic Chemical	4 of 4 results	Jun 7, 2017	Feb 7, 2024
Nickel 1036	Inorganic Chemical	3 of 22 results	Sep 24, 2003	Apr 7, 2025
Xylenes, Total 2955	Organic Chemical	3 of 20 results	Aug 15, 2019	Jan 3, 2022
Sulfate 1055	Inorganic Chemical	3 of 3 results	Sep 24, 2003	Jun 7, 2017
Nitrite 1041	Inorganic Chemical	2 of 32 results	May 19, 2004	Aug 15, 2005
Arsenic 1005	Inorganic Chemical	1 of 22 results	Feb 7, 2024	Feb 7, 2024
Ethylbenzene 2992	Organic Chemical	1 of 20 results	Aug 15, 2019	Aug 15, 2019
Calcium 1016	Inorganic Chemical	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Iron 1028	Inorganic Chemical	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Magnesium 1031	Inorganic Chemical	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Manganese 1032	Inorganic Chemical	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Potassium 1042	Inorganic Chemical	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Residue, Total, Filterable 1057	Water Quality	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Alkalinity, Caco3 Stability 1067	Water Quality	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Carbon Dioxide 1901	Water Quality	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Color 1905	Water Quality	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Hardness, Total (As Caco3) 1915	Water Quality	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Alkalinity, Total 1927	Water Quality	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Iron, Field Result FEFD	Inorganic Chemical	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Calculated Sodium NACA	Water Quality	1 of 1 result	Jun 7, 2017	Jun 7, 2017
PH, Field Result PHFD	Water Quality	1 of 1 result	Jun 7, 2017	Jun 7, 2017
Monobromoacetic Acid 2453	Organic Chemical	1 of 14 results	Aug 16, 2012	Aug 16, 2012
Dibromoacetic Acid 2454	Organic Chemical	1 of 14 results	Aug 16, 2012	Aug 16, 2012

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 61–70 of 287 samples, newest first — collected June 23, 2020 to March 8, 2021. The summary above covers all 287.

42 results from the 10 samples listed here: 14 detected, 28 not detected. Across the whole record it is 293 of 1,261. 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 1 sampling point 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 Humphreys Co. W/A #1-Midnight, every result from 61 to 70 of 287 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 Mar 8, 2021 13:20 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample NA-210309-013 Laboratory MSDH Lab
75 mg/l , sample collected Mar 8, 2021 13:20, sampling point TF101	Sodium 1052 EPA method 200.7	Not recorded
Collected Mar 8, 2021 13:20 Sampling point TF102 Treatment Facility TF102 Sample type Routine Lab sample 210309-010VO Laboratory MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	1,2,4-Trichlorobenzene 2378 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Cis-1,2-Dichloroethylene 2380 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Xylenes, Total 2955 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Dichloromethane 2964 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	O-Dichlorobenzene 2968 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	P-Dichlorobenzene 2969 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Vinyl Chloride 2976 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	1,1-Dichloroethylene 2977 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Trans-1,2-Dichloroethylene 2979 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	1,2-Dichloroethane 2980 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	1,1,1-Trichloroethane 2981 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Carbon Tetrachloride 2982 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	1,2-Dichloropropane 2983 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Trichloroethylene 2984 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	1,1,2-Trichloroethane 2985 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Tetrachloroethylene 2987 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Chlorobenzene 2989 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Benzene 2990 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Toluene 2991 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Ethylbenzene 2992 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 8, 2021 13:20, sampling point TF102	Styrene 2996 EPA method 524.2	Jan 1, 2021 – Mar 31, 2021
Collected Aug 26, 2020 12:30 Sampling point SM1 Location withheld Sample type Routine Lab sample 200827-001HA Laboratory MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 26, 2020 12:30, sampling point SM1	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
0.002 mg/l , sample collected Aug 26, 2020 12:30, sampling point SM1	Dichloroacetic Acid 2451 EPA method 552.2	Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 26, 2020 12:30, sampling point SM1	Trichloroacetic Acid 2452 EPA method 552.2	Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 26, 2020 12:30, sampling point SM1	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 26, 2020 12:30, sampling point SM1	Dibromoacetic Acid 2454 EPA method 552.2	Not recorded
0.002 mg/l , sample collected Aug 26, 2020 12:30, sampling point SM1	Total Haloacetic Acids (Haa5) 2456	Jan 1, 2020 – Dec 31, 2020
Collected Jun 23, 2020 06:43 Sampling point DS000 Distribution Sample type Routine Lab sample 200625-126PB Laboratory MSDH Lab
0.0387 mg/l , sample collected Jun 23, 2020 06:43, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 23, 2020 06:43, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
Collected Jun 23, 2020 08:17 Sampling point DS000 Distribution Sample type Routine Lab sample 200625-125PB Laboratory MSDH Lab
0.0074 mg/l , sample collected Jun 23, 2020 08:17, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
0.0011 mg/l , sample collected Jun 23, 2020 08:17, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
Collected Jun 23, 2020 04:30 Sampling point DS000 Distribution Sample type Routine Lab sample 200625-124PB Laboratory MSDH Lab
0.0068 mg/l , sample collected Jun 23, 2020 04:30, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 23, 2020 04:30, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
Collected Jun 23, 2020 07:00 Sampling point DS000 Distribution Sample type Routine Lab sample 200625-123PB Laboratory MSDH Lab
0.0684 mg/l , sample collected Jun 23, 2020 07:00, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 23, 2020 07:00, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
Collected Jun 23, 2020 06:00 Sampling point DS000 Distribution Sample type Routine Lab sample 200625-122PB Laboratory MSDH Lab
0.0755 mg/l , sample collected Jun 23, 2020 06:00, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
0.0017 mg/l , sample collected Jun 23, 2020 06:00, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
Collected Jun 23, 2020 08:15 Sampling point DS000 Distribution Sample type Routine Lab sample 200625-121PB Laboratory MSDH Lab
0.0043 mg/l , sample collected Jun 23, 2020 08:15, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
0.0006 mg/l , sample collected Jun 23, 2020 08:15, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
Collected Jun 23, 2020 07:45 Sampling point DS000 Distribution Sample type Routine Lab sample 200625-120PB Laboratory MSDH Lab
0.0181 mg/l , sample collected Jun 23, 2020 07:45, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
0.0007 mg/l , sample collected Jun 23, 2020 07:45, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020

Collected
Mar 8, 2021 13:20

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
NA-210309-013

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Sodium 1052 EPA method 200.7
  
  Result
  75 mg/l
Collected
Mar 8, 2021 13:20

Sampling point
TF102 Treatment Facility TF102

Sample type
Routine

Lab sample
210309-010VO

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Mar 31, 2021
- 1,2,4-Trichlorobenzene 2378 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Cis-1,2-Dichloroethylene 2380 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Xylenes, Total 2955 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Dichloromethane 2964 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- O-Dichlorobenzene 2968 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- P-Dichlorobenzene 2969 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Vinyl Chloride 2976 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1-Dichloroethylene 2977 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trans-1,2-Dichloroethylene 2979 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloroethane 2980 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,1-Trichloroethane 2981 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Carbon Tetrachloride 2982 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloropropane 2983 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trichloroethylene 2984 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,2-Trichloroethane 2985 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Tetrachloroethylene 2987 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Chlorobenzene 2989 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Benzene 2990 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Toluene 2991 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Ethylbenzene 2992 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Styrene 2996 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Aug 26, 2020 12:30

Sampling point
SM1 Location withheld

Sample type
Routine

Lab sample
200827-001HA

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
  0.002 mg/l
  
  Monitoring period
  Not recorded
- Trichloroacetic Acid 2452 EPA method 552.2
  
  Result
  Not detected below 0.001 mg/l Minimum Reporting Level
  
  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
  Not detected below 0.001 mg/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Total Haloacetic Acids (Haa5) 2456
  
  Result
  0.002 mg/l
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2020
Collected
Jun 23, 2020 06:43

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
200625-126PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2018 – Dec 31, 2020
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0387 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Jun 23, 2020 08:17

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
200625-125PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2018 – Dec 31, 2020
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0074 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0011 mg/l
Collected
Jun 23, 2020 04:30

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
200625-124PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2018 – Dec 31, 2020
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0068 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Jun 23, 2020 07:00

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
200625-123PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2018 – Dec 31, 2020
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0684 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Jun 23, 2020 06:00

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
200625-122PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2018 – Dec 31, 2020
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0755 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0017 mg/l
Collected
Jun 23, 2020 08:15

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
200625-121PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2018 – Dec 31, 2020
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0043 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0006 mg/l
Collected
Jun 23, 2020 07:45

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
200625-120PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2018 – Dec 31, 2020
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0181 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0007 mg/l

Routine (10).