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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

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 111–120 of 287 samples, newest first — collected September 24, 2014 to June 27, 2017. The summary above covers all 287.

51 results from the 10 samples listed here: 30 detected, 21 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.

Chemical and radiological sample results for Humphreys Co. W/A #1-Midnight, every result from 111 to 120 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
Jun 27, 2017 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170629-096PB
Laboratory
MSDH Lab
0.0067 mg/l , sample collected Jun 27, 2017 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 27, 2017 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jun 27, 2017 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170629-092PB
Laboratory
MSDH Lab
0.0863 mg/l , sample collected Jun 27, 2017 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0007 mg/l , sample collected Jun 27, 2017 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jun 27, 2017 05:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170629-091PB
Laboratory
MSDH Lab
0.0417 mg/l , sample collected Jun 27, 2017 05:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0008 mg/l , sample collected Jun 27, 2017 05:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jun 26, 2017 22:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170629-101PB
Laboratory
MSDH Lab
0.0762 mg/l , sample collected Jun 26, 2017 22:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0023 mg/l , sample collected Jun 26, 2017 22:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jun 7, 2017 10:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170609-001PC
Laboratory
MSDH Lab
2.497 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Calcium 1016 EPA method 200.8 Not recorded
Not detected below 2 mg/l Minimum Reporting Level , sample collected Jun 7, 2017 10:30, sampling point DS000 Chloride 1017 EPA method 300.0 Not recorded
0.12 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Fluoride 1025 EPA method 380-75WE Not recorded
0.1592 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Iron 1028 EPA method 200.8 Not recorded
0.1363 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Magnesium 1031 EPA method 200.8 Not recorded
0.0031 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Manganese 1032 EPA method 200.8 Not recorded
1.0254 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Potassium 1042 EPA method 200.8 Not recorded
97.6603 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Sodium 1052 EPA method 200.8 Not recorded
6.464 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Sulfate 1055 EPA method 300.0 Not recorded
214 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Residue, Total, Filterable 1057 EPA method CALCUL LAB Not recorded
5.45 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Alkalinity, Caco3 Stability 1067 EPA method 2320B Not recorded
0 mg/l This result is recorded as a detection, and the figure the agency wrote — "0" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Carbon Dioxide 1901 EPA method CALCUL LAB Not recorded
10 units The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Color 1905 EPA method 2120B Not recorded
6.7 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Hardness, Total (As Caco3) 1915 EPA method CALCUL LAB Not recorded
183 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Alkalinity, Total 1927 EPA method 2320B Not recorded
0 mg/l This result is recorded as a detection, and the figure the agency wrote — "0.0" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Iron, Field Result FEFD EPA method 3500AL-D Not recorded
84.8 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 Calculated Sodium NACA EPA method CALCUL LAB Not recorded
8.2 ph The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 7, 2017 10:30, sampling point DS000 PH, Field Result PHFD EPA method 3500AL-D Not recorded
Collected
Feb 13, 2017 09:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
170214-039NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 13, 2017 09:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 13, 2017 09:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 13, 2017 09:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Apr 6, 2016 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
160407-036NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 6, 2016 13:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 6, 2016 13:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 6, 2016 13:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Mar 2, 2016 12:35
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
160303-010IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 2, 2016 12:35, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0011 mg/l , sample collected Mar 2, 2016 12:35, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 2, 2016 12:35, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0022 mg/l , sample collected Mar 2, 2016 12:35, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.142 mg/l , sample collected Mar 2, 2016 12:35, sampling point TF101 Fluoride 1025 EPA method 300.0 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 2, 2016 12:35, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 2, 2016 12:35, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 2, 2016 12:35, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 2, 2016 12:35, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 2, 2016 12:35, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 2, 2016 12:35, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Collected
Feb 9, 2015 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
150210-009NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 9, 2015 13:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 9, 2015 13:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 9, 2015 13:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Sep 24, 2014 02:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
140925-012TH
Laboratory
MSDH Lab
22.4 ug/l , sample collected Sep 24, 2014 02:30, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 24, 2014 02:30, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
3.56 ug/l , sample collected Sep 24, 2014 02:30, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 24, 2014 02:30, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
26 ug/l , sample collected Sep 24, 2014 02:30, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2014 – Dec 31, 2016

Routine (10).