01-02-2008, 01:17 PM
Aloha all! There seems to be several people concerned about cesspool contamination. I would be willing to answer any questions you might have concerning this subject feel free to call me at 966-4129. Also here is a section of the Hawaii well standards regarding the placement of wells.
Section 2.3 Well Location
a) Distance from Sources of Pollution
New wells shall be sited the maximum distance possible from sources of pollution.
Some possible pollution sources include wastewater lines, cesspools, septic tanks,
wastewater leaching fields, landfills, chemical storage and injection wells.
(b) Gradients (slopes)
Where possible, wells should be located hydraulically up-gradient (normally on a
higher slope) from potential sources of pollution. Consideration should also be given to
the fact that pumping a well may cause a localized reversal of the existing ground-water
gradient due to drawdown of the ground-water table.
2-3
© Flood and Drainage Areas
When avoidable, wells should not be located in flood zones. Potable water wells
located in flood and drainage areas shall have well casing terminated 2 feet above the 100-
year level of flooding, as shown on the latest FEMA (Federal Emergency Management
Agency) map and be properly designed to avoid potential contamination of the aquifer
from flood waters. If necessary, the immediate area around a potable water well should be
built up so that drainage moves away from the well.
(d) Accessibility
All wells shall be located an adequate distance from buildings and other structures
to allow permanent access for well modification, maintenance, repair, and
abandonment/sealing.
A properly constructed well poses very little risk of contamination. Regarding the rock formations beneath HPP, some layers are very porous, others are very hard. Sometimes the harder layers hold down the water so we have to drill until we puncture it through to allow for a sufficient amount of water to come up. The same holds true for the upper layers of hard rock, they filter the water very, very well. I drink it every day and I enjoy every drop of it [][].
Aloha,
Daniel R Diamond
Section 2.3 Well Location
a) Distance from Sources of Pollution
New wells shall be sited the maximum distance possible from sources of pollution.
Some possible pollution sources include wastewater lines, cesspools, septic tanks,
wastewater leaching fields, landfills, chemical storage and injection wells.
(b) Gradients (slopes)
Where possible, wells should be located hydraulically up-gradient (normally on a
higher slope) from potential sources of pollution. Consideration should also be given to
the fact that pumping a well may cause a localized reversal of the existing ground-water
gradient due to drawdown of the ground-water table.
2-3
© Flood and Drainage Areas
When avoidable, wells should not be located in flood zones. Potable water wells
located in flood and drainage areas shall have well casing terminated 2 feet above the 100-
year level of flooding, as shown on the latest FEMA (Federal Emergency Management
Agency) map and be properly designed to avoid potential contamination of the aquifer
from flood waters. If necessary, the immediate area around a potable water well should be
built up so that drainage moves away from the well.
(d) Accessibility
All wells shall be located an adequate distance from buildings and other structures
to allow permanent access for well modification, maintenance, repair, and
abandonment/sealing.
A properly constructed well poses very little risk of contamination. Regarding the rock formations beneath HPP, some layers are very porous, others are very hard. Sometimes the harder layers hold down the water so we have to drill until we puncture it through to allow for a sufficient amount of water to come up. The same holds true for the upper layers of hard rock, they filter the water very, very well. I drink it every day and I enjoy every drop of it [][].
Aloha,
Daniel R Diamond
Daniel R Diamond