Chemical and radiological sample results

MS0280018 , Valley Park W/A

31 of the 58 analytes this system has been tested for have been detected at least once, across 438 samples on record.

The other 27 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 438 samples on record, detections range from March 29, 2004 to March 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 Valley Park W/A, 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
TTHM 2950	Organic Chemical	102 of 113 results	Jun 7, 2004	Mar 3, 2026
Total Haloacetic Acids (Haa5) 2456	Organic Chemical	99 of 108 results	Dec 14, 2004	Mar 3, 2026
Copper, Free 1022	Inorganic Chemical	95 of 95 results	Jun 26, 2007	Sep 23, 2025
Lead 1030	Inorganic Chemical	87 of 95 results	Jun 26, 2007	Sep 23, 2025
Chloroform 2941	Organic Chemical	65 of 74 results	May 15, 2006	Mar 3, 2026
Bromodichloromethane 2943	Organic Chemical	61 of 75 results	May 15, 2006	Mar 3, 2026
Dichloroacetic Acid 2451	Organic Chemical	60 of 68 results	Sep 24, 2007	Mar 3, 2026
Trichloroacetic Acid 2452	Organic Chemical	55 of 68 results	Sep 24, 2007	Mar 3, 2026
Monochloroacetic Acid 2450	Organic Chemical	22 of 68 results	Jan 30, 2008	Nov 14, 2017
Barium 1010	Inorganic Chemical	17 of 17 results	Nov 15, 2004	Apr 8, 2025
Fluoride 1025	Inorganic Chemical	17 of 17 results	Nov 15, 2004	Apr 8, 2025
Chromium 1020	Inorganic Chemical	12 of 17 results	Mar 16, 2005	Apr 8, 2025
Dibromochloromethane 2944	Organic Chemical	7 of 75 results	May 13, 2010	Mar 5, 2020
Xylenes, Total 2955	Organic Chemical	6 of 42 results	Mar 29, 2004	Aug 28, 2006
Arsenic 1005	Inorganic Chemical	5 of 17 results	Oct 27, 2021	Apr 8, 2025
Sodium 1052	Inorganic Chemical	4 of 4 results	Sep 30, 2019	Oct 21, 2024
Combined Radium (-226 & -228) 4010	Radionuclide	3 of 6 results	Sep 28, 2011	Mar 28, 2018
Nickel 1036	Inorganic Chemical	2 of 17 results	Apr 16, 2008	Feb 23, 2022
Radium-228 4030	Radionuclide	2 of 6 results	Sep 28, 2011	Mar 28, 2018
Selenium 1045	Inorganic Chemical	2 of 17 results	Mar 16, 2005	Feb 6, 2006
Ethylbenzene 2992	Organic Chemical	2 of 42 results	Mar 29, 2004	May 31, 2005
Cyanide 1024	Inorganic Chemical	1 of 17 results	May 6, 2025	May 6, 2025
Carbon Tetrachloride 2982	Organic Chemical	1 of 42 results	Mar 4, 2025	Mar 4, 2025
Gross Alpha, Incl. Radon & U 4002	Radionuclide	1 of 2 results	Dec 17, 2019	Dec 17, 2019
Monobromoacetic Acid 2453	Organic Chemical	1 of 68 results	Jul 18, 2013	Jul 18, 2013
Gross Alpha Particle Activity 4109	Radionuclide	1 of 4 results	Sep 18, 2012	Sep 18, 2012
Radium-226 4020	Radionuclide	1 of 6 results	Jun 14, 2012	Jun 14, 2012
P-Dichlorobenzene 2969	Organic Chemical	1 of 42 results	Jul 12, 2010	Jul 12, 2010
Nitrate-Nitrite 1038	Inorganic Chemical	1 of 31 results	May 27, 2008	May 27, 2008
Nitrate 1040	Inorganic Chemical	1 of 31 results	May 27, 2008	May 27, 2008
Styrene 2996	Organic Chemical	1 of 42 results	Oct 26, 2004	Oct 26, 2004

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 121–130 of 438 samples, newest first — collected March 16, 2021 to July 27, 2021. The summary above covers all 438.

37 results from the 10 samples listed here: 14 detected, 23 not detected. Across the whole record it is 735 of 2,265. 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 8 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 Valley Park W/A, every result from 121 to 130 of 438 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 27, 2021 07:00 Sampling point LC0010 Location withheld Sample type Routine Lab sample PB-210728-055 Laboratory MSDH Lab
0.51 mg/l , sample collected Jul 27, 2021 07:00, sampling point LC0010	Copper, Free 1022 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
0.7 ug/l , sample collected Jul 27, 2021 07:00, sampling point LC0010	Lead 1030 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
Collected Jul 27, 2021 05:20 Sampling point LC0014 Location withheld Sample type Routine Lab sample PB-210728-054 Laboratory MSDH Lab
0.853 mg/l , sample collected Jul 27, 2021 05:20, sampling point LC0014	Copper, Free 1022 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
0.6 ug/l , sample collected Jul 27, 2021 05:20, sampling point LC0014	Lead 1030 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
Collected Jul 27, 2021 07:41 Sampling point LC0019 Location withheld Sample type Routine Lab sample PB-210728-063 Laboratory MSDH Lab
0.0176 mg/l , sample collected Jul 27, 2021 07:41, sampling point LC0019	Copper, Free 1022 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 27, 2021 07:41, sampling point LC0019	Lead 1030 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
Collected Jul 27, 2021 06:00 Sampling point LC0001 Location withheld Sample type Routine Lab sample PB-210728-059 Laboratory MSDH Lab
0.0546 mg/l , sample collected Jul 27, 2021 06:00, sampling point LC0001	Copper, Free 1022 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
1.4 ug/l , sample collected Jul 27, 2021 06:00, sampling point LC0001	Lead 1030 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
Collected Jul 27, 2021 05:30 Sampling point LC0006 Location withheld Sample type Routine Lab sample PB-210728-060 Laboratory MSDH Lab
0.0409 mg/l , sample collected Jul 27, 2021 05:30, sampling point LC0006	Copper, Free 1022 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
1.6 ug/l , sample collected Jul 27, 2021 05:30, sampling point LC0006	Lead 1030 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
Collected Jul 27, 2021 12:00 Sampling point LC0005 Location withheld Sample type Routine Lab sample PB-210728-061 Laboratory MSDH Lab
0.0215 mg/l , sample collected Jul 27, 2021 12:00, sampling point LC0005	Copper, Free 1022 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
1.3 ug/l , sample collected Jul 27, 2021 12:00, sampling point LC0005	Lead 1030 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
Collected Jul 27, 2021 06:30 Sampling point LC0004 Location withheld Sample type Routine Lab sample PB-210728-062 Laboratory MSDH Lab
1.38 mg/l , sample collected Jul 27, 2021 06:30, sampling point LC0004	Copper, Free 1022 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 27, 2021 06:30, sampling point LC0004	Lead 1030 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
Collected Jun 23, 2021 15:15 Sampling point SM2 Location withheld Sample type Routine Lab sample HA-210624-002 Laboratory MSDH Lab
17.4 ug/l , sample collected Jun 23, 2021 15:15, sampling point SM2	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Not recorded
Collected Apr 20, 2021 13:00 Sampling point TF101 Treatment Plant T10 Sample type Routine Lab sample 210421-009VO Laboratory MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	1,2,4-Trichlorobenzene 2378 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Cis-1,2-Dichloroethylene 2380 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Xylenes, Total 2955 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Dichloromethane 2964 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	O-Dichlorobenzene 2968 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	P-Dichlorobenzene 2969 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Vinyl Chloride 2976 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	1,1-Dichloroethylene 2977 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Trans-1,2-Dichloroethylene 2979 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	1,2-Dichloroethane 2980 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	1,1,1-Trichloroethane 2981 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Carbon Tetrachloride 2982 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	1,2-Dichloropropane 2983 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Trichloroethylene 2984 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	1,1,2-Trichloroethane 2985 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Tetrachloroethylene 2987 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Chlorobenzene 2989 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Benzene 2990 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Toluene 2991 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Ethylbenzene 2992 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 20, 2021 13:00, sampling point TF101	Styrene 2996 EPA method 524.2	Jan 1, 2016 – Dec 31, 2021
Collected Mar 16, 2021 11:16 Sampling point TF101 Treatment Plant T10 Sample type Routine Lab sample NA-210317-005 Laboratory MSDH Lab
191 mg/l , sample collected Mar 16, 2021 11:16, sampling point TF101	Sodium 1052 EPA method 200.7	Not recorded

Collected
Jul 27, 2021 07:00

Sampling point
LC0010 Location withheld

Sample type
Routine

Lab sample
PB-210728-055

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2019 – Dec 31, 2021
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.51 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.7 ug/l
Collected
Jul 27, 2021 05:20

Sampling point
LC0014 Location withheld

Sample type
Routine

Lab sample
PB-210728-054

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2019 – Dec 31, 2021
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.853 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.6 ug/l
Collected
Jul 27, 2021 07:41

Sampling point
LC0019 Location withheld

Sample type
Routine

Lab sample
PB-210728-063

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2019 – Dec 31, 2021
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0176 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Jul 27, 2021 06:00

Sampling point
LC0001 Location withheld

Sample type
Routine

Lab sample
PB-210728-059

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2019 – Dec 31, 2021
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0546 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  1.4 ug/l
Collected
Jul 27, 2021 05:30

Sampling point
LC0006 Location withheld

Sample type
Routine

Lab sample
PB-210728-060

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2019 – Dec 31, 2021
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0409 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  1.6 ug/l
Collected
Jul 27, 2021 12:00

Sampling point
LC0005 Location withheld

Sample type
Routine

Lab sample
PB-210728-061

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2019 – Dec 31, 2021
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0215 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  1.3 ug/l
Collected
Jul 27, 2021 06:30

Sampling point
LC0004 Location withheld

Sample type
Routine

Lab sample
PB-210728-062

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2019 – Dec 31, 2021
- Copper, Free 1022 EPA method 200.8
  
  Result
  1.38 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Jun 23, 2021 15:15

Sampling point
SM2 Location withheld

Sample type
Routine

Lab sample
HA-210624-002

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  17.4 ug/l
Collected
Apr 20, 2021 13:00

Sampling point
TF101 Treatment Plant T10

Sample type
Routine

Lab sample
210421-009VO

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2016 – Dec 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
Mar 16, 2021 11:16

Sampling point
TF101 Treatment Plant T10

Sample type
Routine

Lab sample
NA-210317-005

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Sodium 1052 EPA method 200.7
  
  Result
  191 mg/l

Routine (10).