• AWWA WQTC60712
Provide PDF Format

Learn More

AWWA WQTC60712

  • Microbiological Quality of Reuse Water
  • Conference Proceeding by American Water Works Association, 11/15/2004
  • Publisher: AWWA

$12.00$24.00


Explosive population growth and diminishing freshwater resources around the globehave now made reclaimed water use an established practice in many parts of the world. Varietiesof microbial pathogens are present in wastewater and can be detected in reclaimed water. Theobjective of this study was to evaluate changes in quality of reclaimed water as it passes throughthe reclaimed water distribution systems, from treatment plant to point of use, with particularreference to pathogen occurrence. The experimental approach includes evaluating treatedreclaimed water samples monthly for five months from three different treatment facilities.However, currently only one system is participating in the sampling campaign and the other twosystems are scheduled to participate in October 2004. The treatment facilities are located in threedifferent states and reuse water for toilet flushing and cooling towers in a large apartmentcomplex, shopping mall and a national stadium. The treatments include biological treatment,membrane filtration, ultraviolet light, ozone and chlorine disinfection. The samples wereanalyzed for the presence of total and fecal coliforms, E. coli, E.coli O157, Pseudomonas,Aeromonas, Legionella, HPC, somatic and male-specific coliphage, enteric virus (enterovirus,hepatitis A, norwalk virus, and rotavirus) nucleic acid by RT-PCR, Giardia cysts, infectiousCryptosporidium oocysts, and physiochemical water quality parameters. Water samples werepositive for low levels of total and fecal coliforms, E. coli, and Pseudomonas, suggesting thatregrowth may be occurring in the distribution system. Also one sample was positive for E. coliO157 indicating that additional disinfection may be necessary to ensure the safety of reuse water. Includes 10 references, tables.

Related Products

AWWA WQTC65766

AWWA WQTC65766

Impact of MIEX Pretreatment on Downstream Conventionally Treated Water Quality Parameters..

$12.00 $24.00

AWWA WQTC57187

AWWA WQTC57187

Bromate Control During Ozonation of High-Bromide Drinking Water..

$12.00 $24.00

AWWA WQTC58965

AWWA WQTC58965

Assessment of Arsenic Treatment Alternatives for Source Waters in New Jersey, California, and Arizon..

$12.00 $24.00

AWWA ACE70521

AWWA ACE70521

Sinkzilla: Managing Media during an Interstate Disaster..

$12.00 $24.00