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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

MS0370014 , R D Morrow Power Plant

23 of the 53 analytes this system has been tested for have been detected at least once, across 281 samples on record.

The other 30 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 281 samples on record, detections range from October 6, 2003 to February 3, 2026. 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 R D Morrow Power Plant, 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 42 of 42 results Sep 21, 2004 Aug 12, 2024
Barium 1010 Inorganic Chemical 39 of 39 results Oct 6, 2003 Dec 22, 2025
Arsenic 1005 Inorganic Chemical 38 of 39 results Oct 6, 2003 Dec 22, 2025
Nickel 1036 Inorganic Chemical 27 of 39 results Oct 6, 2003 Dec 22, 2025
Lead 1030 Inorganic Chemical 24 of 42 results Sep 21, 2004 Aug 12, 2024
Fluoride 1025 Inorganic Chemical 20 of 39 results Oct 6, 2003 Dec 22, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 19 of 88 results Nov 13, 2007 Feb 3, 2026
Nitrate 1040 Inorganic Chemical 19 of 88 results Nov 13, 2007 Feb 3, 2026
Chromium 1020 Inorganic Chemical 12 of 39 results Mar 3, 2004 Dec 22, 2025
Sulfate 1055 Inorganic Chemical 8 of 8 results Oct 6, 2003 Mar 3, 2004
Xylenes, Total 2955 Organic Chemical 7 of 43 results Sep 18, 2014 Sep 14, 2021
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 5 of 7 results Jun 8, 2010 Feb 10, 2025
TTHM 2950 Organic Chemical 4 of 7 results Aug 15, 2007 Feb 10, 2025
Sodium 1052 Inorganic Chemical 4 of 4 results Feb 14, 2022 Feb 14, 2022
Dichloroacetic Acid 2451 Organic Chemical 4 of 4 results Jun 8, 2010 Aug 27, 2018
Trichloroacetic Acid 2452 Organic Chemical 2 of 4 results Aug 1, 2013 Aug 27, 2018
Dibromoacetic Acid 2454 Organic Chemical 2 of 4 results Jun 8, 2010 Jul 6, 2015
Chloroform 2941 Organic Chemical 2 of 4 results Jun 8, 2010 Aug 1, 2013
Dibromochloromethane 2944 Organic Chemical 2 of 4 results Aug 15, 2007 Jun 8, 2010
Bromoform 2942 Organic Chemical 1 of 4 results Jun 8, 2010 Jun 8, 2010
Bromodichloromethane 2943 Organic Chemical 1 of 4 results Jun 8, 2010 Jun 8, 2010
Dichloromethane 2964 Organic Chemical 1 of 43 results Aug 12, 2004 Aug 12, 2004
Cyanide 1024 Inorganic Chemical 1 of 43 results Nov 24, 2003 Nov 24, 2003

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 91–100 of 281 samples, newest first — collected June 19, 2017 to February 26, 2018. The summary above covers all 281.

39 results from the 10 samples listed here: 13 detected, 26 not detected. Across the whole record it is 284 of 1,796. 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 R D Morrow Power Plant, every result from 91 to 100 of 281 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
Feb 26, 2018 11:20
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
180227-044NI
Laboratory
MSDH Lab
0.11 mg/l , sample collected Feb 26, 2018 11:20, sampling point TF105 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
0.11 mg/l , sample collected Feb 26, 2018 11:20, sampling point TF105 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 26, 2018 11:20, sampling point TF105 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Jan 10, 2018 09:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
1801099-05PB
Laboratory
Micro Methods Laboratory
0.008 mg/l , sample collected Jan 10, 2018 09:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
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. , sample collected Jan 10, 2018 09:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jan 10, 2018 09:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
1801099-04PB
Laboratory
Micro Methods Laboratory
0.032 mg/l , sample collected Jan 10, 2018 09:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
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. , sample collected Jan 10, 2018 09:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jan 10, 2018 09:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
1801099-03PB
Laboratory
MSDH Lab
0.032 mg/l , sample collected Jan 10, 2018 09:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
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. , sample collected Jan 10, 2018 09:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jan 10, 2018 09:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
1801099-02PB
Laboratory
Micro Methods Laboratory
0.007 mg/l , sample collected Jan 10, 2018 09:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
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. , sample collected Jan 10, 2018 09:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jan 10, 2018 01:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
1801099-01PB
Laboratory
Micro Methods Laboratory
0.106 mg/l , sample collected Jan 10, 2018 01:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
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. , sample collected Jan 10, 2018 01:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Oct 30, 2017 11:00
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
171031-002NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 30, 2017 11:00, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Oct 30, 2017 11:00, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Oct 30, 2017 11:00, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Aug 29, 2017 11:00
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
170830-002VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
0.544 ug/l , sample collected Aug 29, 2017 11:00, sampling point TF105 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2017 11:00, sampling point TF105 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2017
Collected
Jun 19, 2017 11:30
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
170623-010RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 19, 2017 11:30, sampling point TF105 Combined Uranium 4006 EPA method 200.8 Not recorded
Collected
Jun 19, 2017 11:10
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
170623-009RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 19, 2017 11:10, sampling point TF103 Combined Uranium 4006 EPA method 200.8 Not recorded

Routine (10).