EMERGING WATER QUALITY ISSUES
2023 WATER QUALITY REPORT page 3
RADIOACTIVE SUBSTANCES
SUBSTANCE UNITS
PB PLANT 2023
JK PLANT 2021
MCL
Radium 228 pCi / L < 1 < 1 5 NA
Beta / Photon Emitters pCi / L 4.2 5.2 50 NA
Gross Alpha Particle Activity pCi / L < 3 < 3 15 NA
MCLG
POSSIBLE SOURCE OF SUBSTANCE
Decay of natural and man-made deposits
Decay of natural and man-made deposits
Decay of natural and man-made deposits
MICROBIOLOGICAL SUBSTANCES
Tarrant Regional Water District analyzed all raw water sources for cryptosporidium in 2023 . In February , 0.19 oocysts per liter were detected . For every other month in 2023 , there were no detections of cryptosporidium . Cryptosporidium is a pathogen which may be found in water contaminated by feces . Although filtration removes cryptosporidium , it cannot guarantee 100 % removal .
TURBIDITY
TURBIDITY FOR BOTH PLANTS UNITS AVG . LEVEL |
MIN . LEVEL |
MAX . LEVEL |
MCL MCLG |
POSSIBLE SOURCE OF SUBSTANCE |
Highest single measurement NTU 0.1 0.03 0.49 TT = 1.0 0 Soil runoff
Percentage of samples less than 0.3 NTU % 98.85 % 99.35 % 100.00 % TT = 95 %
Turbidity has no health effects . However , turbidity can interfere with disinfection and provide a medium for microbial growth . Turbidity may indicate the presence of disease-causing organisms . These organisms include bacteria , viruses and parasites that can cause symptoms such as nausea , cramps , diarrhea and associated headaches .
EMERGING WATER QUALITY ISSUES
Once every five years , the federal Safe Drinking Water Act ( SDWA ) requires the EPA to issue a list of unregulated contaminants to be monitored by public water systems ( PWSs ). The latest round of required testing , known as the fifth Unregulated Contaminant Monitoring Rule ( UCMR 5 ), requires sample collection for 29 PFAS chemicals and Lithium .
These tests are being conducted from 2023 to 2025 . Arlington Water Utilities began tests for UCMR 5 in June 2023 . The table below shows chemicals in the UCMR that have been detected . The presence of a compound does not necessarily equate to a health risk . The concentration of a compound is a far more important factor in determining whether there are health implications . To learn more about the Unregulated Contaminant Monitoring Rule , visit www . epa . gov / dwucmr or www . DrinkTap . org .
Pierce-Burch WTP 6 / 21 / 2023 ( μg / L ) |
Kubala WTP 6 / 21 / 2023 ( μg / L ) |
Pierce-Burch WTP 9 / 19 / 2023 ( μg / L ) |
Kubala WTP 9 / 19 / 2023 ( μg / L ) |
Pierce-Burch WTP 11 / 15 / 2023 ( μg / L ) |
Kubala WTP 11 / 15 / 2023 ( μg / L ) |
Inorganics Lithium |
< 9 |
< 9 |
< 9 |
< 9 |
< 9 |
< 9 |
Per-and Polyfluoroalkyl Substances perfluorobutanoic acid ( PFBA ) |
0.00567 |
0.00580 |
0.00728 |
0.00704 |
0.00523 |
0.00803 |
perfluorobutanesulfonic acid ( PFBS ) |
0.00586 |
ND |
0.00453 |
0.00313 |
0.00372 |
0.00316 |
perfluorohexanoic acid ( PFHxA ) |
0.00435 |
0.00361 |
0.00463 |
0.00504 |
0.00382 |
0.00504 |
perfluorooctanesulfonic acid ( PFOS ) |
0.00416 |
ND |
0.00403 |
ND |
ND |
ND |
perfluoropentanoic acid ( PFPeA ) |
0.00379 |
0.00340 |
0.00492 |
0.00561 |
0.00477 |
0.00652 |