International Rainwater Catchment Systems Association
International Rainwater Catchment Systems Conferences
  Next conference
  1st, Hawaii
  2nd, St Thomas
  3rd, Khon Kaen
  4th, Manila
  5th, Taiwan
  6th, Nairobi
  7th, Beijing
  8th, Tehran
  9th, Petrolina
  10th, Mannheim
  11th, Texcoco
  12th, New Delhi
  13th, Sydney
  14th, Kuala Lumpur
  Join IRCSA
  IRCSA Board

5th International Conference on Rain Water Cistern Systems
"Rainwater Catchment for Future Generations"
Keelung, Taiwan, R.O.C. - August 1991

Section 2: Catchment Water Quality Regulation

Page 33

The Bacterial Content Of Cistern Waters In Hawaii

Roger S. Fujioka, Steven G. Inserra, Robert D. Chinn
University y of Hawaii, USA


The drinking water quality of 15 cistern systems in Honolulu, and 3 cistern systems on another island (H waif) in the State ofHawaii was evaluated. These cistern waters an be expected to meet turbidity, chloride, nitrate and pH levels established by USEPA for drinking water. However, the bacterial (total heterotrophic fecal coliform, E. coli, fecal streptococci) c oncentrations in these cistern waters usually exceeded drinking water standards. Low levels of. C. perfringens and salmonella bacteria were also recovered from some cistern reservoir tanks. Higher concentrations of bacteria were recovered from cistern reservoir tanks than from household faucet sources. The cisterns in Hawaii are susceptible to contamination by indicator bacteria via multiple sources an cannot be expected to meet bacterial drinking water standards. e recommend that the portion of water to be used for drinking be disinfected and standards specifically for cistern waters based on fecal coliform or E'.coli be established.

PDF of full document (13pp, 500kb)

Note: The IRCSA proceedings section is still new and under active management, If you find any problems, ommissions or corrections please contact the administrator so we can put things right.
Top of Page