INDEPENDENT VOC WATER TESTING · MAY 2026

VOC & Trihalomethane Lab Results

Tap Score reports compare two drinking-water samples collected at the same testing location: one from a bathroom sink without the treatment system and one from a bathroom sink with the treatment system.

A Direct Comparison

The Tap Score Summary Analysis reported Total THMs at 60.4 PPB in the untreated sample and Not Detected in the treated sample.

UNTREATED WATER

60.4 PPB

Total THMs

TREATED WATER

NOT DETECTED

Total THMs

Four individual trihalomethanes were detected in the untreated sample. Each was reported as Not Detected in the treated sample.
About the reports: Kitting, logistics, and support were provided by SimpleLab, Inc. The results are presented in Tap Score reports, and the drinking-water analysis was performed by Microbac Laboratories.

What Are VOCs and Trihalomethanes?

These names can sound complicated, so here is what they mean in everyday language and why they were included in this water testing.

What are VOCs?

VOCs, or volatile organic compounds, are a broad family of chemicals that can enter water from environmental, household, commercial, and industrial sources. Some VOCs evaporate easily, which means they may move from water into the air when water is heated or used.

What are trihalomethanes?

Trihalomethanes, often shortened to THMs, are a specific group of VOCs that can form as disinfection byproducts. They may develop when chlorine used to disinfect drinking water reacts with naturally occurring organic material. Chlorine plays an important role in controlling microorganisms, but this reaction can create compounds such as chloroform and other THMs.

The simple explanation: VOCs are a large family of chemicals that may be found in water. THMs are one smaller group that can form during chlorine disinfection. Tap Score testing provides a direct before-and-after look at what the laboratory reported in the untreated and treated samples.

Full Tap Score Summary Analysis

The table below reproduces every field shown in the Summary Analysis section of both Tap Score PDF reports.

Report Sample Analyte Unit Result Method Evaluation
MJC5ZT Bathroom Sink w/out System Total THMs PPB 60.4 Calculation No benchmark available
U6AE3F Bathroom Sink w/System Total THMs PPB Not Detected Calculation No evaluation possible

Detected THM Comparison

These are the four individual compounds detected in the untreated report and their corresponding results in the treated report.

Compound Untreated result Untreated evaluation Treated result Treated evaluation
Bromodichloromethane 19.6 PPB > HGL (0) Not Detected No evaluation possible
Bromoform 2.21 PPB > HGL (0) Not Detected No evaluation possible
Chloroform 26 PPB > HGL (0.221) Not Detected No evaluation possible
Dibromochloromethane 12.6 PPB > HGL (0.1) Not Detected No evaluation possible

Testing and Sample Information

Testing RequestedVOC Water Test
MatrixDrinking Water
Testing FacilityMicrobac Laboratories
Test MethodEPA 524.2

Untreated Sample · MJC5ZT

Sample location
Bathroom Sink w/out System
Collection date
May 6, 2026
Received date
May 8, 2026
Reported on
May 14, 2026

Treated Sample · U6AE3F

Sample location
Bathroom Sink w/System
Collection date
May 5, 2026
Received date
May 8, 2026
Reported on
May 14, 2026
Testing notes from Tap Score: The reports state that there were no problems with analytical events unless otherwise noted and that quality-control data was within laboratory-defined or method-specified acceptance limits except where noted.

Complete VOC Test Results

Expand either report below to view every analyte and every field included in the laboratory Test Results tables—not only the detected compounds.

View complete untreated results · Report MJC5ZT · 59 analytes
AnalyteUnitResultMDLRLMethodEvaluation
1,1,1,2 Tetrachloroethane PPB Not detected 0.5 2 EPA 524.2 No evaluation possible
1,1,1 Trichloroethane PPB Not detected 0.5 2 EPA 524.2 No evaluation possible
1,1,2,2 Tetrachloroethane PPB Not detected 0.55 2 EPA 524.2 No evaluation possible
1,1,2 Trichloroethane PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
1,1 Dichloroethane PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
1,1 Dichloroethylene PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
1,1 Dichloropropene PPB Not detected 0.46 2 EPA 524.2 No evaluation possible
1,2,3 Trichlorobenzene PPB Not detected 0.4 2 EPA 524.2 No evaluation possible
1,2,3 Trichloropropane PPB Not detected 0.59 2 EPA 524.2 No evaluation possible
1,2,4 Trichlorobenzene PPB Not detected 0.54 2 EPA 524.2 No evaluation possible
1,2,4 Trimethylbenzene PPB Not detected 0.41 2 EPA 524.2 No evaluation possible
1,2 Dichlorobenzene PPB Not detected 0.47 2 EPA 524.2 No evaluation possible
1,2 Dichloroethane PPB Not detected 0.68 2 EPA 524.2 No evaluation possible
1,2 Dichloropropane PPB Not detected 0.55 2 EPA 524.2 No evaluation possible
1,3,5 Trimethylbenzene PPB Not detected 0.42 2 EPA 524.2 No evaluation possible
1,3 Dichlorobenzene PPB Not detected 0.46 2 EPA 524.2 No evaluation possible
1,3 Dichloropropane PPB Not detected 0.51 2 EPA 524.2 No evaluation possible
1,4 Dichlorobenzene PPB Not detected 0.45 2 EPA 524.2 No evaluation possible
2,2 Dichloropropane PPB Not detected 0.5 2 EPA 524.2 No evaluation possible
Benzene PPB Not detected 0.46 2 EPA 524.2 No evaluation possible
Bromobenzene PPB Not detected 0.57 2 EPA 524.2 No evaluation possible
Bromochloromethane PPB Not detected 0.61 2 EPA 524.2 No evaluation possible
Bromodichloromethane PPB 19.6 0.5 2 EPA 524.2 > HGL (0)
Bromoform PPB 2.21 0.48 2 EPA 524.2 > HGL (0)
Bromomethane PPB Not detected 2 2 EPA 524.2 No evaluation possible
Carbon Tetrachloride PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
Chlorobenzene PPB Not detected 0.51 2 EPA 524.2 No evaluation possible
Chloroethane PPB Not detected 0.6 2 EPA 524.2 No evaluation possible
Chloroform PPB 26 0.56 2 EPA 524.2 > HGL (0.221)
Chloromethane PPB Not detected 0.43 2 EPA 524.2 No evaluation possible
Chlorotoluene 2 PPB Not detected 0.41 2 EPA 524.2 No evaluation possible
Chlorotoluene 4 PPB Not detected 0.39 2 EPA 524.2 No evaluation possible
cis 1,2 Dichloroethylene PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
cis 1,3 Dichloropropene PPB Not detected 0.48 2 EPA 524.2 No evaluation possible
Dibromochloromethane PPB 12.6 0.52 2 EPA 524.2 > HGL (0.1)
Dibromochloropropane PPB Not detected 0.58 2 EPA 524.2 No evaluation possible
Dibromomethane PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
Dichlorodifluoromethane PPB Not detected 0.46 2 EPA 524.2 No evaluation possible
Dichloromethane PPB Not detected 0.95 2 EPA 524.2 No evaluation possible
Ethylbenzene PPB Not detected 0.44 2 EPA 524.2 No evaluation possible
Ethylene dibromide PPB Not detected 0.48 2 EPA 524.2 No evaluation possible
Hexachlorobutadiene PPB Not detected 0.44 2 EPA 524.2 No evaluation possible
Isopropylbenzene PPB Not detected 0.42 2 EPA 524.2 No evaluation possible
Methyl Tertiary Butyl Ether PPB Not detected 1.12 2 EPA 524.2 No evaluation possible
m,p Xylene PPB Not detected 1.35 2 EPA 524.2 No evaluation possible
Naphthalene PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
n Butylbenzene PPB Not detected 0.47 2 EPA 524.2 No evaluation possible
n Propylbenzene PPB Not detected 0.36 2 EPA 524.2 No evaluation possible
o Xylene PPB Not detected 1.35 2 EPA 524.2 No evaluation possible
p Isopropyltoluene PPB Not detected 0.41 2 EPA 524.2 No evaluation possible
sec Butylbenzene PPB Not detected 0.39 2 EPA 524.2 No evaluation possible
Styrene PPB Not detected 0.47 2 EPA 524.2 No evaluation possible
tert Butylbenzene PPB Not detected 0.35 2 EPA 524.2 No evaluation possible
Tetrachloroethylene PPB Not detected 0.47 2 EPA 524.2 No evaluation possible
Toluene PPB Not detected 0.51 2 EPA 524.2 No evaluation possible
trans 1,3 Dichloropropene PPB Not detected 0.44 2 EPA 524.2 No evaluation possible
Trichloroethylene PPB Not detected 0.45 2 EPA 524.2 No evaluation possible
Trichlorofluoromethane PPB Not detected 1.2 2 EPA 524.2 No evaluation possible
Vinyl Chloride PPB Not detected 0.3 2 EPA 524.2 No evaluation possible
View complete treated results · Report U6AE3F · 59 analytes
AnalyteUnitResultMDLRLMethodEvaluation
1,1,1,2 Tetrachloroethane PPB Not detected 0.5 2 EPA 524.2 No evaluation possible
1,1,1 Trichloroethane PPB Not detected 0.5 2 EPA 524.2 No evaluation possible
1,1,2,2 Tetrachloroethane PPB Not detected 0.55 2 EPA 524.2 No evaluation possible
1,1,2 Trichloroethane PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
1,1 Dichloroethane PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
1,1 Dichloroethylene PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
1,1 Dichloropropene PPB Not detected 0.46 2 EPA 524.2 No evaluation possible
1,2,3 Trichlorobenzene PPB Not detected 0.4 2 EPA 524.2 No evaluation possible
1,2,3 Trichloropropane PPB Not detected 0.59 2 EPA 524.2 No evaluation possible
1,2,4 Trichlorobenzene PPB Not detected 0.54 2 EPA 524.2 No evaluation possible
1,2,4 Trimethylbenzene PPB Not detected 0.41 2 EPA 524.2 No evaluation possible
1,2 Dichlorobenzene PPB Not detected 0.47 2 EPA 524.2 No evaluation possible
1,2 Dichloroethane PPB Not detected 0.68 2 EPA 524.2 No evaluation possible
1,2 Dichloropropane PPB Not detected 0.55 2 EPA 524.2 No evaluation possible
1,3,5 Trimethylbenzene PPB Not detected 0.42 2 EPA 524.2 No evaluation possible
1,3 Dichlorobenzene PPB Not detected 0.46 2 EPA 524.2 No evaluation possible
1,3 Dichloropropane PPB Not detected 0.51 2 EPA 524.2 No evaluation possible
1,4 Dichlorobenzene PPB Not detected 0.45 2 EPA 524.2 No evaluation possible
2,2 Dichloropropane PPB Not detected 0.5 2 EPA 524.2 No evaluation possible
Benzene PPB Not detected 0.46 2 EPA 524.2 No evaluation possible
Bromobenzene PPB Not detected 0.57 2 EPA 524.2 No evaluation possible
Bromochloromethane PPB Not detected 0.61 2 EPA 524.2 No evaluation possible
Bromodichloromethane PPB Not detected 0.5 2 EPA 524.2 No evaluation possible
Bromoform PPB Not detected 0.48 2 EPA 524.2 No evaluation possible
Bromomethane PPB Not detected 2 2 EPA 524.2 No evaluation possible
Carbon Tetrachloride PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
Chlorobenzene PPB Not detected 0.51 2 EPA 524.2 No evaluation possible
Chloroethane PPB Not detected 0.6 2 EPA 524.2 No evaluation possible
Chloroform PPB Not detected 0.56 2 EPA 524.2 No evaluation possible
Chloromethane PPB Not detected 0.43 2 EPA 524.2 No evaluation possible
Chlorotoluene 2 PPB Not detected 0.41 2 EPA 524.2 No evaluation possible
Chlorotoluene 4 PPB Not detected 0.39 2 EPA 524.2 No evaluation possible
cis 1,2 Dichloroethylene PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
cis 1,3 Dichloropropene PPB Not detected 0.48 2 EPA 524.2 No evaluation possible
Dibromochloromethane PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
Dibromochloropropane PPB Not detected 0.58 2 EPA 524.2 No evaluation possible
Dibromomethane PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
Dichlorodifluoromethane PPB Not detected 0.46 2 EPA 524.2 No evaluation possible
Dichloromethane PPB Not detected 0.95 2 EPA 524.2 No evaluation possible
Ethylbenzene PPB Not detected 0.44 2 EPA 524.2 No evaluation possible
Ethylene dibromide PPB Not detected 0.48 2 EPA 524.2 No evaluation possible
Hexachlorobutadiene PPB Not detected 0.44 2 EPA 524.2 No evaluation possible
Isopropylbenzene PPB Not detected 0.42 2 EPA 524.2 No evaluation possible
Methyl Tertiary Butyl Ether PPB Not detected 1.12 2 EPA 524.2 No evaluation possible
m,p Xylene PPB Not detected 1.35 2 EPA 524.2 No evaluation possible
Naphthalene PPB Not detected 0.52 2 EPA 524.2 No evaluation possible
n Butylbenzene PPB Not detected 0.47 2 EPA 524.2 No evaluation possible
n Propylbenzene PPB Not detected 0.36 2 EPA 524.2 No evaluation possible
o Xylene PPB Not detected 1.35 2 EPA 524.2 No evaluation possible
p Isopropyltoluene PPB Not detected 0.41 2 EPA 524.2 No evaluation possible
sec Butylbenzene PPB Not detected 0.39 2 EPA 524.2 No evaluation possible
Styrene PPB Not detected 0.47 2 EPA 524.2 No evaluation possible
tert Butylbenzene PPB Not detected 0.35 2 EPA 524.2 No evaluation possible
Tetrachloroethylene PPB Not detected 0.47 2 EPA 524.2 No evaluation possible
Toluene PPB Not detected 0.51 2 EPA 524.2 No evaluation possible
trans 1,3 Dichloropropene PPB Not detected 0.44 2 EPA 524.2 No evaluation possible
Trichloroethylene PPB Not detected 0.45 2 EPA 524.2 No evaluation possible
Trichlorofluoromethane PPB Not detected 1.2 2 EPA 524.2 No evaluation possible
Vinyl Chloride PPB Not detected 0.3 2 EPA 524.2 No evaluation possible
Tap Score report terms: HGL refers to the Health Guidance Level used by Tap Score for health-protective evaluation. MDL is the Method Detection Limit. RL is the Method Reporting Limit.
Testing scope: Results shown are taken from Tap Score reports MJC5ZT and U6AE3F and apply to the specific samples and testing conditions documented in those reports. The treated report identifies the sample as “Bathroom Sink w/System” and does not name a specific Sentry product model.