Treating high pH vs Potential build up of salts in soil

Asked May 20, 2019, 12:35 PM EDT

Hi, We are planning to include the water used in irrigation and to fill our little pond when we install an acid injector to our pump. The pH in our well water is 9.2 and we're thinking the high alkalinity may be the cause of the leaves on our Japanese Maples, Hostas and native plants to going crispy around the edges when we rely on heavily on supplemental water. We have been told extreme fluctuations in pH cause stress in fish when we add water to the pond. Are we correct in thinking the pH level may be causing damage to our landscape inhabitants? If we do include irrigation water and pond water in the the treatment, do we need to be worried about a build up of residual salts as a result of injecting an acid? Is there a "better" a type of acid to be used when considering the health and well-being plants and aquatic life? Thank you! Sue

Lane County Oregon soil ph

1 Response

The well alkalinity of 9.2 is the highest I have seen for the Willamette valley. That high of a pH would severely affect plants. The average soil pH in Bend is only 7.5-8,5.

Yes, this pH would burn leaves and roots.

For the fish you need to consult a veterinarian.

The adding of salts to the landscape depends on the materials you add to reduce the pH. Acids come in various forms. Check local "water treatment companies" in Lane County. I found over 6 such companies.

The pH solution is ---- adding acid to the water.

Salts issue - is using a non salt acid form. All this depends on what is available from companies and costs.

So you are loking for a compnay to:

1- reduce the water pH from 9.2 down to preferably 6.5-6.9.
2- have an acid that is in a non salt form.

Here is one article about using acids in watertreatment. https://articles.extension.org/pages/32302/drinking-water-treatment-ph-adjustment

Info on the internet is vague and not very informative. Finding a good water treatment person may be your best bet.