--- title: "Austin, TX Water Quality 2026: Hardness is the primary issue" description: "Austin water hardness 15–20 (very hard), hardness is the primary issue flagged above EWG's health guideline, best whole-house treatment for local homes." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Organization", "name": "Whole House Water Treatment", "url": "https://wholehousewatertreatment.com", "description": "Independent U.S. reviews of whole-house water filters, softeners and reverse osmosis systems, plus state and city water-quality guides." }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://wholehousewatertreatment.com/" }, { "@type": "ListItem", "position": 2, "name": "Water quality", "item": "https://wholehousewatertreatment.com/water-quality" }, { "@type": "ListItem", "position": 3, "name": "Texas", "item": "https://wholehousewatertreatment.com/water-quality/tx" } ] }, { "@context": "https://schema.org", "@type": "Article", "headline": "Texas Water Quality (2026)", "datePublished": "2026-01-01", "dateModified": "2026-06-01", "author": { "@type": "Organization", "name": "Whole House Water Treatment", "url": "https://wholehousewatertreatment.com" }, "publisher": { "@type": "Organization", "name": "Whole House Water Treatment", "logo": { "@type": "ImageObject", "url": "https://wholehousewatertreatment.com/favicon.png" } }, "mainEntityOfPage": { "@type": "WebPage", "@id": "https://wholehousewatertreatment.com/water-quality/tx" }, "image": "https://wholehousewatertreatment.com/__l5e/assets-v1/f70de0ac-404f-41e5-a9cc-fcff113c64f7/og-state-tx.png" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Is Texas tap water safe to drink?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, by federal standards: the cities on this page all meet every EPA legal limit. The contaminants we flag sit above EWG's stricter, non-enforceable health guideline, which is the benchmark most homeowners use when deciding whether to filter further at home." } }, { "@type": "Question", "name": "Why is Texas water hard?", "acceptedAnswer": { "@type": "Answer", "text": "Hardness comes from calcium and magnesium picked up as water moves through local geology. In Texas, the values vary city by city, see the table above for your metro. Anything above 7 grains per gallon is considered hard and is where a softener starts to make a noticeable difference." } }, { "@type": "Question", "name": "Do I need a softener or a filter in Texas?", "acceptedAnswer": { "@type": "Answer", "text": "Different problems, different tools. A whole-house carbon filter handles chlorine, chloramine and taste. A softener handles scale from hard water. Many Texas homes benefit from both, and a kitchen-tap RO if lead, PFAS or nitrate appear on your CCR." } } ] } ] --- [![Whole House Water Treatment logo](/assets/logo-Cd_iTZFZ.png)Whole House Water Treatment WHWT ](/) [Find Your System](/find-your-system)[Best Filters](/best-whole-house-water-filters)[Best Softeners](/best-water-softeners)[Well Water](/best-well-water-filtration-systems)[Water Quality](/water-quality)[Guides](/buying-guides)[Learn](/learn)[About](/about) 1. [Home](/) 2. [Water quality](/water-quality) 3. Texas Water quality · TX # Texas Water Quality (2026) Last updated: June 2026 ![Clear water flowing from a polished chrome kitchen faucet into a glass](/assets/hero-water-quality-COGzm6w_.jpg) Up to 207 contaminants detected statewide. Over 700 water systems reported TTHM above the EPA legal limit of 80 ppb, reaching an estimated 8.6M people. Our Texas coverage focuses on the 9 metros below. Each city page lists the utility's water source, hardness in grains per gallon, contaminants flagged above EWG's stricter health guideline, and the whole-house system that fits that specific profile, not a generic recommendation copied across the state. How to read the numbers on this page Every U.S. utility we cover meets the federal EPA legal limits for drinking water. Figures flagged as _"above the health guideline"_ refer to the stricter, non-enforceable benchmark published by the Environmental Working Group (EWG), **not** a legal violation. We share these figures so households can decide whether they want extra filtration - they are not a statement that the water is unsafe or illegal to drink. Always check your utility's annual Consumer Confidence Report (CCR) and the [EWG Tap Water Database](https://www.ewg.org/tapwater/) for the most current data on your zip code. ## Common contaminants flagged across Texas Across the Texas cities we cover, these are the contaminants most often reported above EWG's health guideline. None exceed federal EPA legal limits. - disinfection byproducts - Hardness is the primary issue - chloramine - chromium-6 - arsenic - hardness - 13+ contaminants above EWG health guidelines, including TTHM and radiological - Arsenic ## Cities we cover in Texas City Hardness Flagged above EWG guideline Best fit [Arlington](/water-quality/tx/arlington-tx) \- disinfection byproducts Softener + carbon [Austin](/water-quality/tx/austin-tx) 15–20 (very hard) Hardness is the primary issue Salt-based softener [Corpus Christi](/water-quality/tx/corpus-christi-tx) \- disinfection byproducts Softener + carbon [Dallas](/water-quality/tx/dallas-tx) 8-12 chloramine, disinfection byproducts, chromium-6 Catalytic carbon plus softener [El Paso](/water-quality/tx/el-paso-tx) \- arsenic, hardness Softener + carbon; POU RO for drinking [Fort Worth](/water-quality/tx/fort-worth-tx) \- disinfection byproducts Softener + carbon [Houston](/water-quality/tx/houston-tx) Moderate–hard 13+ contaminants above EWG health guidelines, including TTHM and radiological, Arsenic Catalytic carbon filter, plus a softener if hardness is high in your zip code [Lubbock](/water-quality/tx/lubbock-tx) \- arsenic, fluoride Softener + POU RO [San Antonio](/water-quality/tx/san-antonio-tx) 15–20 (very hard) Hardness is the primary issue (water meets EPA limits) Salt-based softener ## Recommended systems for Texas Most Texas homes benefit from a layered setup: whole-house carbon for chlorine and taste, a softener if your CCR shows hardness above 7 gpg, and a certified under-sink RO at the kitchen tap if lead, PFAS, nitrate or arsenic are flagged. [Best whole-house filters →](/best-whole-house-water-filters)[Best softeners →](/best-water-softeners)[Best well-water systems →](/best-well-water-filtration-systems)[Best under-sink RO →](/best-reverse-osmosis-systems) Free tool · 30 seconds ## Not sure which system you actually need? Skip the spec-sheet rabbit hole. Our local-aware selector pairs your situation with the right filter, softener or RO, then layers in your city's real hardness and contaminant data. No email, no signup. [Find your system →](/find-your-system) ## Texas water FAQ + Is Texas tap water safe to drink? Yes, by federal standards: the cities on this page all meet every EPA legal limit. The contaminants we flag sit above EWG's stricter, non-enforceable health guideline, which is the benchmark most homeowners use when deciding whether to filter further at home. + Why is Texas water hard? Hardness comes from calcium and magnesium picked up as water moves through local geology. In Texas, the values vary city by city, see the table above for your metro. Anything above 7 grains per gallon is considered hard and is where a softener starts to make a noticeable difference. + Do I need a softener or a filter in Texas? Different problems, different tools. A whole-house carbon filter handles chlorine, chloramine and taste. A softener handles scale from hard water. Many Texas homes benefit from both, and a kitchen-tap RO if lead, PFAS or nitrate appear on your CCR. Sources: EWG Tap Water Database; Clearly Filtered 2026 Whole House Water Treatment Independent, U.S.-focused reviews and water-quality guides for whole-house filters, softeners and reverse osmosis systems. Informational only - not medical or safety advice. 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