Lefty's Plumbing
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Water Treatment

Water Testing in San Diego

Before we recommend a system, we test what is actually in your water. Free basic hardness testing on site, with full lab panels available for chlorine, pH, iron, and more.

24-hour supportAvailable around the clock for emergencies.
10 years of experienceLicensed San Diego plumbers you can trust.
100% satisfactionGuaranteed workmanship, backed in writing.
What's included

Water Testing

  • On-site hardness testing
  • Full lab panels available
  • Pre and post-install comparison
  • System sizing based on results
  • Honest recommendations

Need it handled today?

Give us a call. Same-day windows available.

Why this comes up in San Diego

Countywide hardness runs 15 to 20 grains per gallon on imported water from the Colorado River Aqueduct and State Water Project. Coastal blends around La Jolla and Pacific Beach vary a little; inland well water in Poway, Ramona, and Alpine adds iron and sulfur. We test first, then design.

FAQ

Common questions

Is basic testing really free?+

Yes. A hardness reading takes 5 minutes and we do it before recommending any system.

Do you sell more than needed?+

No. If your water does not need a full filtration setup, we tell you.

How long does a full panel take?+

Lab panels typically return in 5 to 10 business days.

Where does San Diego's water come from and why is it hard?+

About 80% is imported from the Colorado River Aqueduct and State Water Project. Both are mineral-heavy sources, which is why countywide hardness runs 15 to 20 grains per gallon.

Is my well water different from city water?+

Yes. If you're in Poway, Ramona, Alpine, or parts of East County on well water, we run a full lab panel first. Wells often add iron, sulfur, or elevated TDS on top of hardness, and the system design is different.

Our Promise

The Lefty guarantee

Written guarantee

Every job backed in writing. If it fails, we come back.

Licensed & insured

Fully licensed technicians, insured, and background-checked.

4.9★ from 312+ reviews

Trusted by San Diego homeowners across the county.

Ready when you are

Got a leak? Give Lefty a call.

Real diagnostics. Real prices. Real people who show up.