Know Your Water
Verified numbers for your utility — because Central Texas water changes block by block.
Tell us about your water — we’ll recommend the right system. No obligation.
Water quality here isn't one story — it's a patchwork of utilities, sources, and treatment choices. The table below summarizes verified hardness data for the systems we serve, drawn from each utility's Consumer Confidence Report and TCEQ sampling. Utility numbers describe the water leaving the plant; what reaches your glass has also toured miles of mains and your own plumbing — which is what an in-home forensic water analysis measures.
| Utility / Area | Serves | Hardness (gpg) | Category |
|---|---|---|---|
| Austin Water | Austin, Tarrytown, Barton Creek, Westlake | 5–6 | Moderate |
| City of Pflugerville | Pflugerville | ~12–19 | Hard–Very hard |
| City of Round Rock | Round Rock | 10–11 | Hard |
| City of Cedar Park | Cedar Park | 10–11 | Hard |
| City of Leander | Leander | 9.5–11 | Hard |
| City of Hutto | Hutto | 10–11.5 | Hard |
| Travis Co. WCID 17 | Steiner Ranch, River Place | 10.5–11.5 | Hard |
| West Travis County PUA | Lakeway, Bee Cave, Spanish Oaks, Dripping Springs | 10–11 | Hard |
| Hurst Creek MUD | Rough Hollow, parts of Lakeway | ~10–11 | Hard |
| City of Georgetown | Georgetown | 10–20 by zone | Hard–Very hard |
| City of Marble Falls | Marble Falls, Highland Lakes | ~11 | Hard |
| Hill Country private wells | Burnet, Llano, Blanco, rural Hays & Travis | 15–25+ | Very hard — test each well |
Sources: utility Consumer Confidence Reports and TCEQ sampling; ranges vary by season and pressure zone. Compiled 2026.
Beyond hardness: disinfectant type matters too — Austin Water and the West Travis County PUA run chloramine, which standard carbon barely touches. And hardness is only one line of the story: pH, iron, sulfur, and your own plumbing write the rest. On a private well, the whole report is yours to commission — start with the A–Z problem guide or go straight to testing.
Independent databases also aggregate utility results — e.g. the EWG Tap Water Database (ewg.org/tapwater); note it grades against EWG's own guidelines, which are stricter than EPA legal limits.
We keep hardness-verified pages for 25+ Central Texas communities — find yours for local specifics.
Service area →Every utility publishes an annual water quality report — we'll happily translate yours into plain English.
Testing →Mains, heaters, and house plumbing change the water. In-home testing measures what you actually drink.
Forensic analysis →No utility, no report, no rules — just you. Annual testing is the whole safety system.
Well water →If you're on a utility, start with its Consumer Confidence Report (CCR) — the annual disclosure every system must publish. If you're on a well, nobody tests but you. Either way, an in-home forensic water analysis tells you what's at YOUR tap.
No — that's the surprise. Austin proper runs a moderate 5–6 grains, while Georgetown's groundwater zones hit 17–20 and Hill Country wells commonly exceed 15–25. Two neighbors on different supplies can live in different water worlds.
It varies by system — Austin Water and the West Travis County PUA, for example, run chloramine, which standard carbon filters barely touch. Your CCR says which; it changes what filtration actually works.
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