Acidic Water: Signs and Fixes: A St. Louis Guide

2026-02-24

Plumbing Guide

Acidic water is a silent problem that damages plumbing over years, and the signs are subtle until the damage is done. A pH test is the way to confirm it and the fix is straightforward.

Acidic Water: Signs and Fixes: A St. Louis Guide

The signs

Blue-green stains on fixtures, a metallic taste, and pinhole leaks in copper are the classic signs of acidic water. The copper is being dissolved by the low pH.

The test

A simple pH test strip, or a lab test, shows whether the water is acidic. A pH below about 6.5 is corrosive to copper. freezing winters put stress on exposed lines, and many older homes still have aging galvanized pipes In St. Louis, the source water decides the reading.

The fix

An acid neutralizer raises the pH, protecting the pipes and the fixtures. It is installed on the main line where the water enters.

The prevention

Catching the acidity early stops the pinhole leaks and the staining before the pipes need replacing.

The call

Test the pH and treat it if it is low. Call 888-217-3585 and St. Louis Home Plumbing Co will match you with a St. Louis pro.

Plumbing in St. Louis: what to know

In St. Louis, freezing winters put stress on exposed lines, and many older homes still have aging galvanized pipes. Pros in our network know the local quirks and bring the right parts on the first visit.

Across St. Louis city County — from Maplewood, Clayton and Richmond Heights to ZIP codes like 63108, 63110, 63103 — homeowners deal with the same kinds of issues. The tips above apply locally, and when a job goes beyond a quick fix, a vetted local pro is only a call away.

Need a hand in St. Louis?

If a plumbing issue is beyond a quick fix, don't wait for it to get worse. Call 888-217-3585 and St. Louis Home Plumbing Co will match you with a vetted local pro — usually within minutes. Learn more about plumbing help in St. Louis.

Plumbing emergency or urgent repair? Call now.

Call 888-217-3585 and we'll match you with a vetted plumbing pro in St. Louis — usually within minutes.

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Emergency? Call Now888-217-3585