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
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.
| 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 371–380 of 438 samples, newest first — collected June 26, 2007 to July 19, 2007. The summary above covers all 438.
22 results from the 10 samples listed here: 18 detected, 4 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.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 19, 2007, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 19, 2007, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 19, 2007, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 19, 2007, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — 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 a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. 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 Jul 19, 2007, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jul 1, 2007 – Sep 30, 2007 |
|
||
| 0.1179 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 Jul 9, 2007, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Apr 1, 2007 – Jun 30, 2007 |
|
||
| 0.9088 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
| 0.0007 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
|
||
| 0.0615 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
| 0.0018 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
|
||
| 0.0555 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
| 0.009 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
|
||
| 0.1439 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
| 0.0097 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
|
||
| 0.0852 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
| 0.0008 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
|
||
| 0.6949 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
| 0.0014 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
|
||
| 0.0666 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
| 0.0034 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
|
||
| 1.0546 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
| 0.0018 mg/l , sample collected Jun 26, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2007 – Jun 30, 2007 |
-
- Collected
- Jul 19, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 070720-005TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — 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 a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. 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.
- Monitoring period
- Jul 1, 2007 – Sep 30, 2007
-
- Collected
- Jul 9, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 070710-025HA
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2007 – Jun 30, 2007
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.1179 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.
-
- Collected
- Jun 26, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070627-253PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Jun 30, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.9088 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
-
- Collected
- Jun 26, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070627-267PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Jun 30, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0615 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0018 mg/l
-
- Collected
- Jun 26, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070627-251PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Jun 30, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0555 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.009 mg/l
-
- Collected
- Jun 26, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070627-264PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Jun 30, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1439 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0097 mg/l
-
- Collected
- Jun 26, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070627-256PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Jun 30, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0852 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
-
- Collected
- Jun 26, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070627-255PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Jun 30, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.6949 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0014 mg/l
-
- Collected
- Jun 26, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070627-281PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Jun 30, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0666 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0034 mg/l
-
- Collected
- Jun 26, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070627-260PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Jun 30, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 1.0546 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0018 mg/l
Routine (10).