Water Filtration
Systems in Katy, TX
Premium water solutions for Katy's growing communities. From Cinco Ranch to Elyson — crystal-clear, soft water for every home.
What's In Katy's Tap Water?
Katy water meets all federal legal standards — but the EWG found multiple contaminants above science-based health guidelines.
Haloacetic Acids (HAA9)
Nine chlorination byproducts with no federal legal limit; linked to cancer and reproductive harm.
Detected
24.1 ppb
EWG Guideline
0.06 ppb
Total Trihalomethanes (TTHMs)
Form when chlorine treats surface water; collectively linked to bladder cancer and reproductive harm.
Detected
35.8 ppb
EWG Guideline
0.15 ppb
Dibromochloromethane
A trihalomethane byproduct of chlorination linked to liver and kidney damage and potential cancer risk.
Detected
4.20 ppb
EWG Guideline
0.4 ppb
PFOA (Forever Chemical)
Linked to kidney cancer, thyroid disease, and cardiovascular harm; does not break down in the body or environment.
Detected
2.10 ppt
EWG Guideline
0.09 ppt
Chromium (Hexavalent)
The 'Erin Brockovich' chemical — a known carcinogen with no federal legal limit in drinking water.
Detected
0.43 ppb
EWG Guideline
0.02 ppb
Source: EWG Tap Water Database, City of Katy (TX2010001), data 2015–2023. Katy water is federally compliant. EWG guidelines reflect peer-reviewed health-protective thresholds, often stricter than legal limits.
Common Katy Water Problems
And the systems we use to solve them.
Disinfection Byproducts
Katy draws from the same Jordan Lake surface water source as The Woodlands, making it prone to the same chlorination byproducts. TTHMs and HAAs were detected at up to 402× EWG's health guideline.
Our solution
Whole-home carbon filtration removes chlorine and DBPs at entry, while RO handles drinking water.
Hard Water Scale
Katy water is moderately hard, leaving scale on fixtures and inside water heaters, spotty dishes, stiff laundry, and dry skin after showers.
Our solution
A water softener or salt-free conditioner eliminates scale and softens water throughout the whole home.
PFAS & Hexavalent Chromium
Katy water contains both PFOA at 23× EWG's health guideline and hexavalent chromium at 22× the guideline — two of the most concerning contaminants with no federal legal limits.
Our solution
Reverse osmosis removes PFAS and heavy metals from drinking water with up to 99% effectiveness.
Recommended for Katy Homes
Systems that address Katy's specific water profile.
Filtration + Softening + RO
Complete Home System
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Single Tank Resin
Water Softener
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7-Stage Tankless RO
HW800 AlkaPro RO
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Under-Sink Drinking Water
5-Stage Reverse Osmosis
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Chlorine & Sediment
Whole Home Carbon Filter
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No Salt Required
Salt-Free Conditioner
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99.99% Germicidal Protection
UV Sterilizer
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Whole House Protection
Pre-Sediment Filter
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Katy Neighborhoods We Serve
Same-week appointments available across all Katy communities.
Water Quality in Katy, TX — Common Questions
How hard is Katy water?
Katy receives water through the Town of The Woodlands's system, which draws from Jordan Lake. Hardness runs 5–8 grains per gallon — moderate, but enough to affect soap performance, leave deposits on fixtures, and reduce appliance efficiency over time. Katy has seen rapid residential growth, and many newer communities like Haddon Hall, Friendship Station, and West Lake feature tankless water heaters, smart dishwashers, and high-end plumbing fixtures. Hard water is hard on all of it. A water softener installed at the point of entry protects every appliance and every fixture in your home from the moment you move in.
Does Katy tap water have PFAS?
Because Katy shares its water source with The Woodlands — Jordan Lake — the water quality profile is similar. Disinfection byproducts from chlorine treatment are the primary elevated contaminants, and trace PFAS have been detected in the regional supply. A 5-stage or 7-stage reverse osmosis system is the most effective defense against both, removing over 99% of PFAS and disinfection byproducts at the point of use. The water from your kitchen faucet ends up substantially cleaner than what comes directly from the municipal tap.
Can I get water filtration installed this week in Katy?
Yes. We serve Katy as a core part of our Houston Metro coverage area. Call us or request a free water test — we'll schedule a visit, run an in-home analysis with a test kit, and have a transparent quote ready before we leave. Most installations are completed in a single day, typically 3–5 hours. All systems come with a lifetime warranty and lifetime phone support from our local Houston-based team. No obligation to purchase after the test.
How is Katy water different from The Woodlands water?
Katy and The Woodlands share the same water source — Jordan Lake — and both are treated through The Woodlands's regional water system. Water quality at the tap is essentially the same between the two towns, which means Katy homeowners face the same elevated disinfection byproducts, trace PFAS, and moderate hardness that affect The Woodlands. The contaminant profile shown above reflects this shared system. What differs is distribution infrastructure — older neighborhoods in Katy close to downtown may have aging pipes that introduce additional sediment or trace metals locally. A pre-sediment filter is a useful first stage for homes in these areas, particularly if you notice occasional discoloration when water has sat stagnant overnight.
Should I prioritize PFAS removal or disinfection byproducts in Katy?
Both are present in Katy water above EWG health guidelines, but for most households we prioritize both together rather than choosing. A whole-home carbon filter handles disinfection byproducts (TTHMs and HAAs) at every tap — shower, laundry, and drinking. An under-sink reverse osmosis system then handles PFAS, heavy metals, and anything remaining in your drinking and cooking water. The two systems complement each other and address the full spectrum of what EWG detected in Katy. The complete home system combines both in a single installation. If budget requires a phased approach, start with the RO for drinking water — it removes both PFAS and DBPs at the point of consumption — then add whole-home carbon filtration when ready.
Ready for Cleaner Water in Katy?
Free in-home water test, same-week installation, lifetime warranty — no obligation.