Learn About Your Water
Guides, answers, and local knowledge — everything you need before buying a single filter.
Most water filtration information is written for homes on US municipal supply — consistent pressure, treated water, no cisterns. Rosarito is none of that. Seasonal variation, aging distribution lines, and cistern storage all affect what comes out of your tap in ways generic guides don’t cover. These resources are written specifically for homes and expats in Rosarito and northern Baja California.
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Explore Our Resources
Water Quality in Baja
What’s actually in Rosarito water. Sediment, chlorine, bacteria, TDS, and hard water — explained for homeowners, not chemists.
Buying Guides
Whole-house vs RO, whether you need UV, and how to size a system for your home. No upselling — just the information you need.
Frequently Asked Questions
Straight answers to the questions we get every week — from expats, new homeowners, and people who’ve had bad experiences with other companies.
Not sure what you need? A water test tells you everything.
We test before we recommend — every time.
BWS Care
Keep Your Water Clean Year-Round
Every system we install is backed by a maintenance plan. Pick the visit frequency that fits your household — filters, UV lamp, and system checks are all included.
Annual Plan
- 1 visit/year
- 1 filter set included
- UV lamp check
- Full system inspection
Best for: light-use homes or vacation properties
Semi-Annual Plan
- 2 visits/year
- 1 cartridge set included
- UV lamp included
- RO filter set every 12 months
Best for: most Rosarito homes
Quarterly Plan
- 4 visits/year
- 2 cartridge sets included
- UV lamp included
- RO filter set annually
Best for: full-time residents & families
Monthly Plan
- 12 visits/year
- 6 cartridge sets included
- UV lamp included
- Priority scheduling
Best for: commercial & high-use