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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

MS0470091 , H W Byers High School

16 of the 52 analytes this system has been tested for have been detected at least once, across 316 samples on record.

The other 36 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 316 samples on record, detections range from October 8, 2003 to July 20, 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 H W Byers High School, 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 241 of 241 results Jun 24, 2004 Sep 29, 2020
Lead 1030 Inorganic Chemical 167 of 241 results Jun 24, 2004 Sep 29, 2020
Nitrate-Nitrite 1038 Inorganic Chemical 21 of 21 results May 24, 2004 Jul 20, 2026
Nitrate 1040 Inorganic Chemical 21 of 21 results May 24, 2004 Jul 20, 2026
Barium 1010 Inorganic Chemical 10 of 10 results Oct 8, 2003 Oct 22, 2025
TTHM 2950 Organic Chemical 4 of 16 results Jul 12, 2004 Sep 18, 2025
Nickel 1036 Inorganic Chemical 3 of 10 results May 12, 2010 Apr 9, 2019
Chromium 1020 Inorganic Chemical 3 of 10 results May 12, 2010 Mar 2, 2016
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 2 of 17 results Jun 17, 2010 Sep 18, 2025
Trichloroacetic Acid 2452 Organic Chemical 1 of 14 results Sep 18, 2025 Sep 18, 2025
Chloroform 2941 Organic Chemical 1 of 13 results Sep 18, 2025 Sep 18, 2025
Bromodichloromethane 2943 Organic Chemical 1 of 13 results Sep 18, 2025 Sep 18, 2025
Sodium 1052 Inorganic Chemical 1 of 1 result Mar 2, 2022 Mar 2, 2022
Fluoride 1025 Inorganic Chemical 1 of 10 results Apr 9, 2019 Apr 9, 2019
Cadmium 1015 Inorganic Chemical 1 of 10 results Apr 4, 2005 Apr 4, 2005
Selenium 1045 Inorganic Chemical 1 of 10 results Apr 4, 2005 Apr 4, 2005

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 201–210 of 316 samples, newest first — collected April 14, 2009 to October 27, 2009. The summary above covers all 316.

40 results from the 10 samples listed here: 18 detected, 22 not detected. Across the whole record it is 479 of 951. 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 H W Byers High School, every result from 201 to 210 of 316 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
Oct 27, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091028-072PB
Laboratory
MSDH Lab
0.7087 mg/l , sample collected Oct 27, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
0.0024 mg/l , sample collected Oct 27, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 27, 2009
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
091028-002PB
Laboratory
MSDH Lab
1.287 mg/l , sample collected Oct 27, 2009, sampling point TF080 Copper, Free 1022 EPA method 200.8 Not recorded
0.0048 mg/l , sample collected Oct 27, 2009, sampling point TF080 Lead 1030 EPA method 200.8 Not recorded
Collected
Oct 8, 2009
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
091009-010VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Benzene 2990 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Toluene 2991 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 8, 2009, sampling point TF080 Styrene 2996 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Collected
May 6, 2009
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
090507-013NI
Laboratory
MSDH Lab
0.89 mg/l , sample collected May 6, 2009, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
0.89 mg/l , sample collected May 6, 2009, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected May 6, 2009, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Apr 14, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090415-058PB
Laboratory
MSDH Lab
0.0412 mg/l , sample collected Apr 14, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
0.0445 mg/l , sample collected Apr 14, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Collected
Apr 14, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090415-057PB
Laboratory
MSDH Lab
5.735 mg/l , sample collected Apr 14, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
0.0128 mg/l , sample collected Apr 14, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Collected
Apr 14, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090415-056PB
Laboratory
MSDH Lab
0.0294 mg/l , sample collected Apr 14, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
0.0016 mg/l , sample collected Apr 14, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Collected
Apr 14, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090415-055PB
Laboratory
MSDH Lab
1.9363 mg/l , sample collected Apr 14, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
0.0034 mg/l , sample collected Apr 14, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Collected
Apr 14, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090415-054PB
Laboratory
MSDH Lab
3.4797 mg/l , sample collected Apr 14, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
0.0455 mg/l , sample collected Apr 14, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Collected
Apr 14, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090415-053PB
Laboratory
MSDH Lab
4.8968 mg/l , sample collected Apr 14, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
0.0116 mg/l , sample collected Apr 14, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009

Routine (10).