Table B . 2021 Unregulated Contaminants . Unregulated contaminants are those for which EPA has not established drinking water standards . The purpose of unregulated contaminant monitoring is to assist EPA in determining the occurrence of unregulated contaminants in drinking water and whether future regulation is warranted .
Substance |
Units |
Avg . |
Min . |
Max . |
MCL |
MCLG Possible Source |
Chloroform |
ppb |
1.60 |
1.30 |
2.00 |
NE |
NE |
By-product of drinking |
|
Bromodichloromethane
Chlorodibromomethane
|
ppb ppb |
2.20
2.50
|
1.80
2.10
|
2.40
2.80
|
NE
NE
|
NE
60
|
water disinfection ; not regulated individually ; included in Total |
Bromoform |
ppb |
0.40 |
ND |
0.70 |
NE |
NE |
Trihalomethanes . |
Dichloroacetic Acid |
ppb |
2.91 |
2.46 |
3.31 |
NE |
NE |
|
Bromoacetic Acid |
ppb |
0.03 |
ND |
0.08 |
NE |
NE |
Dibromoacetic Acid |
ppb |
1.52 |
1.34 |
1.62 |
NE |
NE |
Chloroacetic Acid |
ppb |
0.68 |
0.41 |
0.85 |
NE |
NE |
Trichloroacetic Acid |
ppb |
0.03 |
ND |
0.07 |
NE |
300 |
By-product of drinking water disinfection ; not regulated individually ; included in Haloacetic Acids .
Reducing the use of bottled water can keep plastic out of landfills and saves the energy used to bottle and transport the water . That ’ s why
Arlington Water Utilities is helping replace water fountains at Arlington libraries with water fountain / bottle filling combination stations as part of the City ’ s 2019 Water Conservation Plan . The latest water bottle filling station was added at the Northeast Branch Library , 1905 Brown Boulevard , in January 2022 .
Arlington Water Utilities employees and their families volunteered on Earth Day 2021 to construct a bed of drought-resistant , native plants provided by Tarrant Regional Water District at Peach Elementary in North Arlington .
Other Substances of Interest |
Substance |
Units |
Avg |
Min |
Max |
Calcium |
ppm |
32.0 |
27.0 |
41.0 |
Chloride ppm 19.0 12.0 26.0 Magnesium ppm 3.7 3.26 4.13 pH pH units 7.97 7.64 8.22 Potassium ppm 4.28 4.19 4.36 Sodium ppm 22.4 19 25.7 Sulfate ppm 39.2 36.9 42.8 Alkalinity , Total ppm 85.8 73.1 104
Total Dissolved Solids
Hardness , Total ( as CaC03 ) ppm 178 140 218
ppm grains / gal
98.6 5.8
84 4.9
Substances Expected to be in Drinking Water
The City of Arlington and the State of Texas both analyze your drinking water . Any regulated substances that were detected during the last year are shown in Table A , and all are well below the established maximum contaminant levels . All water dissolves substances from the ground as it flows over and through it . Substances that may be present in raw water include :
Microbes such as viruses and bacteria that come from septic systems , agricultural livestock operations and wildlife
Salts and metals that can be naturally occurring or the result of urban storm water runoff , industrial or domestic wastewater discharges or farming
Pesticides and herbicides that may come from a variety of sources such as agriculture , urban storm water runoff or residential uses
Radioactive substances that are naturally occurring
116 6.8
Organic chemical substances including synthetic and volatile organic chemicals that are by-products of industrial processes and can also come from gas stations and urban stormwater runoff
Contaminants may be found in drinking water that could cause taste , color , or odor problems but are not necessarily causes for health concerns . For more information , please call Laboratory Services at 817-575-8984 .
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