Arlington Water Utilities | 2024 WATER QUALITY REPORT
Table A | Regulated Substances
Substances that are regulated or are required to be monitored and were detected in Arlington tap water in 2024
SUBSTANCE UNITS
AVG. LEVEL
MIN. LEVEL
MAX. LEVEL
MCL
Arsenic ppb 0.60 ND 1.20 10 NA
Barium ppm 0.054 0.048 0.060 2 2
MCLG
Cyanide ppb 27.7 ND 55.4 200 200
Bromate 1 ppb < 5 < 5 < 5 10 10
Fluoride ppm 0.504 0.14 0.817 4 4
Nickel ppb 0.7 ND 1.30 100 100
Nitrate ppm 0.548 0.173 0.959 10 10
Nitrite ppm < 0.05 ND 0.136 1 1
Chloramines 2 ppm 3.5 3.0 3.7 MRDL = 4 MRDLG = 4
Total Trihalomethanes 2 ppb 11.5 10.5 12.6 80 NA
Haloacetic Acids( HAA5) 2 ppb 7.8 7.1 8.4 60 NA
1
Compliance is based on a calculated running annual average of the quarterly averages.
2
Compliance is based on a calculated annual average of all samples at routine sites.
POSSIBLE SOURCE OF SUBSTANCE
Naturally present or byproduct of agricultural and industrial activities
Discharge from metal and chemical factories, well drilling operations
Discharge from metal and chemical factories
Byproduct of drinking water disinfection
Water additive promoting strong teeth
Naturally present or byproduct of metal and industrial processes
Runoff from fertilizers or livestock feedlots
Runoff from fertilizers or livestock feedlots
Water additive used to control microbes
By-product of drinking water disinfection
By-product of drinking water disinfection
Total Organic Carbon( TOC)
SOURCE
Total Organic Carbon( TOC) Pierce Burch( PB) Treatment Plant
Total Organic Carbon( TOC) John Kubala( JK) Treatment Plant
WATER SOURCE
AVG. LEVEL
MIN. LEVEL
MAX. LEVEL
UNITS
Raw 5.2 4.8 5.4 ppm Drinking 2.9 2.5 3.6 ppm
1.3 1.2 1.4 removal ratio *
Raw 5.7 4.6 7.0 ppm Drinking 2.6 1.9 3.7 ppm
1.5 1.1 2.0 removal ratio *
POSSIBLE SOURCE OF SUBSTANCE
Naturally present in the environment
Naturally present in the environment
* Removal ratio is the percent of TOC removed by the treatment process divided by the percent of TOC required by TCEQ to be removed. Compliance is based on a running annual average of ratio’ s. If the annual average removal ratio is greater than or equal to 1.0, the system is in compliance.
2 2