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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

MS0540075 , Aci Building Systems, LLC

10 of the 50 analytes this system has been tested for have been detected at least once, across 147 samples on record.

The other 40 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 147 samples on record, detections range from April 5, 2022 to June 23, 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 Aci Building Systems, LLC, 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 60 of 60 results Apr 5, 2022 Oct 23, 2024
Lead 1030 Inorganic Chemical 27 of 60 results Apr 5, 2022 Apr 10, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 15 of 21 results Feb 14, 2023 Oct 9, 2024
Nitrate-Nitrite 1038 Inorganic Chemical 12 of 12 results Apr 12, 2022 Jun 23, 2026
Nitrate 1040 Inorganic Chemical 12 of 12 results Apr 12, 2022 Jun 23, 2026
Barium 1010 Inorganic Chemical 7 of 7 results Apr 26, 2022 Apr 8, 2025
Chromium 1020 Inorganic Chemical 7 of 7 results Apr 26, 2022 Apr 8, 2025
Nickel 1036 Inorganic Chemical 7 of 7 results Apr 26, 2022 Apr 8, 2025
Arsenic 1005 Inorganic Chemical 6 of 7 results Apr 26, 2022 Apr 8, 2025
Fluoride 1025 Inorganic Chemical 4 of 7 results Aug 24, 2022 Apr 8, 2025

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

Choose a date range

The most recent samples, result by result

The table below lists 1–10 of 30 samples, newest first — collected April 8, 2025 to July 13, 2026. The summary above covers all 30.

71 results from the 10 samples listed here: 7 detected, 64 not detected. Across the whole record it is 157 of 590. 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 Aci Building Systems, LLC, every result from 1 to 10 of 30 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 13, 2026
Sampling point
TF101 Treatment Facility
Sample type
Routine
Lab sample
35051914001
Laboratory
Pace Analytical Services, LLC
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 13, 2026, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Collected
Jul 6, 2026
Sampling point
TF101 Treatment Facility
Sample type
Routine
Lab sample
35051914004
Laboratory
Pace Analytical Services, LLC
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 6, 2026, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Collected
Jun 23, 2026
Sampling point
TF101 Treatment Facility
Sample type
Routine
Lab sample
35046218001
Laboratory
Pace Analytical Services, LLC
4.3 mg/l , sample collected Jun 23, 2026, sampling point TF101 Nitrate-Nitrite 1038 Apr 1, 2026 – Jun 30, 2026
4.3 mg/l , sample collected Jun 23, 2026, sampling point TF101 Nitrate 1040 EPA method 353.2 Apr 1, 2026 – Jun 30, 2026
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 23, 2026, sampling point TF101 Nitrite 1041 EPA method 353.2 Apr 1, 2026 – Jun 30, 2026
Collected
Feb 3, 2026 15:45
Sampling point
TF101 Treatment Facility
Sample type
Routine
Lab sample
RU-260204-003
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2026 15:45, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jan 1, 2026 – Mar 31, 2026
Collected
Dec 17, 2025 13:21
Sampling point
SM1 Wellhouse (Bacti Site#1)
Sample type
Routine
Lab sample
810-175884-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 13:21, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 13:21, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 13:21, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 13:21, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 13:21, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 13:21, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 13:21, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 13:21, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 13:21, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 13:21, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 17, 2025 13:21, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Collected
Oct 8, 2025 15:00
Sampling point
TF101 Treatment Facility
Sample type
Routine
Lab sample
RU-251009-006
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 8, 2025 15:00, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Oct 1, 2025 – Dec 31, 2025
Collected
Sep 17, 2025 15:00
Sampling point
TF101 Treatment Facility
Sample type
Routine
Lab sample
IN-250918-011
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2025 15:00, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Collected
Jul 9, 2025 12:32
Sampling point
TF101 Treatment Facility
Sample type
Routine
Lab sample
RU-250710-004
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 9, 2025 12:32, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jul 1, 2025 – Sep 30, 2025
Collected
May 14, 2025 10:05
Sampling point
TF101 Treatment Facility
Sample type
Routine
Lab sample
CN-250515-008
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 14, 2025 10:05, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2025 – Dec 31, 2027
Collected
Apr 8, 2025 15:35
Sampling point
TF101 Treatment Facility
Sample type
Routine
Lab sample
IN-250409-026
Laboratory
MSDH Lab
0.001 mg/l , sample collected Apr 8, 2025 15:35, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
0.0177 mg/l , sample collected Apr 8, 2025 15:35, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 15:35, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
0.0033 mg/l , sample collected Apr 8, 2025 15:35, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
0.13 mg/l , sample collected Apr 8, 2025 15:35, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2025 – Dec 31, 2025
0.0024 mg/l , sample collected Apr 8, 2025 15:35, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 15:35, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 15:35, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 15:35, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 15:35, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2025 – Dec 31, 2025

Routine (10).