| T O P I C R E V I E W |
| Daniel |
Posted - 02/23/2007 : 10:50:43
Aloha, Considering a water well? We can answer your questions and explain the process and costs to you. There are many myths and misconceptions about water wells in HPP. Most wells in HPP have clean drinkable water. If any contaminants are encountered, the water can be easily treated. If you have any questions feel free to call us at 808-966-4129 Or simply leave a comment on this subject.
Thank you,
Diamond Drilling & Pump Service.
Daniel R Diamond
Edited by - Daniel on 02/23/2007 12:54:04 |
| 15 L A T E S T R E P L I E S (Newest First) |
| StillHope |
Posted - 03/17/2009 : 09:46:40
My happy experience with Diamond Drilling:
http://punaweb.org/Forum/topic.asp?TOPIC_ID=8232 |
| Daniel |
Posted - 12/14/2008 : 16:39:48
Robguz, I totally agree. It's better safe than sorry!!!
Stillhope, not to my knowledge. If it were denied it would be because the land was protected, such as an SMA, reserve or archiological site. Or maybe if you are in a flood zone or near a chemical tank. Usually those circumstances can be avioded by placeing the well as far from those locations as posible. Sometimes ownership of the land is an issue if the deed doesn't have the right name on it. There really isn't a lot of other problems. If there is we can usually advise on what to do. But for the most part wells are all approved no questions asked, it just takes forever to get a permit.
I hope this helps. Have a nice Sunday afternoon!
Daniel R Diamond |
| StillHope |
Posted - 12/14/2008 : 06:21:59
Daniel,one more question.
To your knowledge,was it ever a case that DLNR denied a well permit in Puna?
And in general,what is the criteria to allow/deny a well drilling on a private property?
This is a ? for my neighbors.(I already have the permit).
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| robguz |
Posted - 12/14/2008 : 00:46:06
Thanks Daniel, for clearing that up. That makes me think it's a more viable alternative than I thought. Although of course you have to treat catchment to be safe. Bleach and UV are required. I'd do UV no matter what with either option so as not to take chances. |
| Daniel |
Posted - 12/13/2008 : 14:07:02
Thats what one would think but fortunatly that isn't how it works. The ground does a great job of filtering the water. That's why Hawaii is known for it's great ground water. As for the salt level in the water it won't hurt your plants at all. Sea veiw water may be 10% salt water at the most.
Vacationland and kapoho should not have cess pools or septics. Some cess pool there go directly into the ground water. There are 1000's of cess pools in HPP, and no major problems. If you want to talk to an expert on the subject call Karl at Pololei labs. As for catchment water being safe, my friend almost died from leptospirosis that was in his catchment. It has to be treated to be safe. Wells sometimes need to be treated too but lack of particles in the water, it's cooler temperature, and it's location under ground away from the elements make it's easier to treat and less likely to grow things in it like the stagnent water in a catchment tank. Catchment water can be cleaned, but it isn't clean until you do. Catchment water has no minerals and it is acidic.
Daniel R Diamond |
| robguz |
Posted - 12/13/2008 : 07:54:27
Daniel, only the lower 1/4 mile of Seaview is required to have septic, so there are about 100+ houses above it on cesspool and more every day. That seems like a lot to me. The house 2 lots up from mine is on cesspool. I'm glad to hear that UV also makes well water safe. If you are using brackish well water to water your plants, doesn't that mean you'll be limited to plants that are very salt tolerant? Anyway, I would think that all the filth from neighbors uphill, household chemicals, yard herbicides, etc, is just going into the well water nearby. Some people won't even swim in the Kapoho tidepools because of all the cesspools nearby, and that has the whole ocean to dilute them. From what I understand catchment is extremely safe, especially if you are in an area with no trees around your property where plant debris, rat poop, etc, is less likely to end up in your tank. I've also understood that catchment water properly treated yields water cleaner than most municipal water in the country.
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| StillHope |
Posted - 12/11/2008 : 02:38:56
Mark,thank you so much!
I am impressed.You should be teaching the subject ! |
| MarkP |
Posted - 12/10/2008 : 21:53:41
Reverse osmosis uses a filter so fine that it works on a molecular level. Water molecules get through but salt molecules, being composed of more atoms and being somehow less flexible, do not. Where the energy comes in is that nature doesn't like her peas and carrots to be separate and she will try to achieve uniform mixture. If you have fresh water on one side of the RO membrane and salty or at least saltier water on the other, both the salt molecules and the water molecules will try to get through to mix things up. Only the water will fit through. The water will actually migrate through the membrane even against a pressure difference. Reverse osmosis is when you make the salty side high enough pressure that it successfully pushes back and more, and the water molecules get filtered through the membrane to the clean side. The saltier the feedstock, the more pressure is required. Seawater RO systems use hundreds of psi because seawater is about 40,000 ppm dissolved solids. The WHO limit for drinking water is a few hundred ppm. The tap water you get in Honolulu is less than 100 ppm I think so it takes only a small amount of pressure to squeeze the pure water through. Regular domestic water pressure is sufficient for the under sink models.
If you didn't keep getting rid of the salty "brine" its concentration would keep going up and with it the energy requirements to push the clean water through as the water fought to get back and mingle with the salt. If you had to have the water and energy was no object you could just keep pushing and get a very high ratio of clean water to brine. In most cases that would be foolish. If you have a good well you have all the water you need and can afford to throw the brine away while it is still pretty fresh. If your feed stock is good enough you can use the brine too for less demanding purposes, so nothing is really wasted.
An RO membrane is extremely fine. Chemical magic goes on there that can be messed up by stuff larger than molecular size. You need to filter the feed water really well to avoid ruining the RO membrane.
If your water has low dissolved solids already you won't even notice the improvement. I don't with the undersink models that use BWS water as the feed source. Rather you won't taste the difference. You won't taste the difference in lead, mercury, trace chemicals either but it is good to know they are greatly reduced. If you don't specifically need to reduce dissolved contaminants then RO will be a waste. |
| StillHope |
Posted - 12/10/2008 : 17:22:09
Thank you,Daniel.
You did answer all of my questions.
If RO is not taking any energy,I would probably use it if no minerals is not a health issue.
And hopefully my neighbors will realize the benefits of having a well one day... |
| Daniel |
Posted - 12/10/2008 : 13:58:56
Aloha Stillhope,
The UV will make the water absolutly safe to drink, cook, brush teeth and shower etc... If you can make catchment water wich is far more dangerous than well water safe to drink than making your well water safe will be a breeze. RO is to remove salt taste from the water. The cess pools aren't a problem. There are very few in seaview. HPP has a lot more and there isn't any major problems there. The gentleman that we reccomend for water testing charges $100 for two tests. Give him a call and he can explain how the UV and RO work. I posted his number for you in a previous post. If you would like you can call me directly at 333-2320. I hope his helps answer your questions if not please call me or Karl at Pololei labs. Thanks.
Daniel R Diamond |
| StillHope |
Posted - 12/10/2008 : 12:30:54
Daniel,my case is different since 98%(?) of 99%the wells you drill are not in Sea View,where is so far only 1 well and a lot of cesspools in the upper part of a subdivision.
Or may be not different?
Did your clients who are in the same proximity from multiple cespools have their water tested?
It's,probably,more expensive to do tests than to by RO...
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| Daniel |
Posted - 12/10/2008 : 10:44:24
Hi, I don't think an RO uses a lot of energy, ours doesn't even use any. We don't need it we just got it to have on hand. The unit itself can cost a lot, but I saw one at costco for under $300. It has to flush away the stuff it gets out of your water so it will need a drain. But they do put out less than they take in. A well pump should have all the pressure you will need, if the unit requires more it will come with the additional pump. The water if it has tasteable salt can be used for EVERYTHING but drinking. You can even drink it, it just tastes funny. The RO will take the salt taste away. 99% of the wells we drill do not need RO.
Daniel R Diamond |
| StillHope |
Posted - 12/10/2008 : 10:39:26
quote:
Originally posted by JonP
Why would you want to run practically pure well water through an RO unit?
I don't want to unless I have to.
I mentioned before that the upper part of my subdivision has cesspools.
I am in lower part where only septic allowed,but so far I don't have definite answer if UV filter completely protects from possible bacteria contamination.
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| Little Bill |
Posted - 12/10/2008 : 09:55:39
I read that a RO will waste several gallons of water just to make one. True or not I don`t know. |
| JonP |
Posted - 12/10/2008 : 09:27:40
Why would you want to run practically pure well water through an RO unit? |
