Quick answer
FindInMyZip tracks 259 water treatment companies across California, averaging 3.3★ on 7,148 reviews. Sonoma County has the deepest coverage (36 listings).
FindInMyZip tracks 259 water treatment companies across California, averaging 3.3★ on 7,148 reviews. Sonoma County has the deepest coverage (36 listings).
Where water treatment companies concentrate
- Sonoma County — 36 water treatment companies
- Placer County — 23 water treatment companies
- San Joaquin County — 21 water treatment companies
- Sacramento County — 20 water treatment companies
- Stanislaus County — 20 water treatment companies
- Alameda County — 17 water treatment companies
- Marin County — 16 water treatment companies
- Mendocino County — 16 water treatment companies
What the review data shows
The category averages 3.3★ statewide on 7,148 combined reviews — a useful benchmark for any water treatment measuring its own reputation. Get water testing, a filtration or softening system, or well-water treatment from the highest-rated local pros in your zip.
Frequently asked questions
How many water treatment companies are there in California? +
FindInMyZip tracks 259 water treatment companies across California, averaging 3.3★ on 7,148 reviews. Sonoma County has the deepest coverage (36 listings).