--- title: "Keller Water Report: What It Means for Pool Chemistry" description: "Keller buys water from Fort Worth. See hardness, pH and alkalinity ranges from two city reports and what they mean for your pool, as of October 2026." url: https://marinapool.multisites.ai/post/keller-water-report-pool-chemistry publisher: Marina Pool Services phone: +1-817-896-1120 quote: https://marinapool.multisites.ai/contact --- # Keller Water Report: What It Means for Pool Chemistry Keller buys its water from Fort Worth. Keller's 2024 report lists total hardness of 76.5 to 175 ppm, about 5 to 10 grains per gallon. Fort Worth's 2025 report lists 108 to 150 ppm. These are tap water ranges, so test your pool water for its own readings. Figures are as of October 2026. Local: KellerPublished October 21, 20263 min read Keller water hardness is listed at 76.5 to 175 ppm in the city’s 2024 drinking water quality report. Keller buys its water from Fort Worth, and Fort Worth’s 2025 report lists 108 to 150 ppm. This post explains what the numbers mean for pool chemistry. Figures are as of October 2026. ## Where does Keller’s water come from? Keller’s 2024 report says the city purchases its water from the City of Fort Worth. Fort Worth draws from Lake Worth, Lake Bridgeport, Richland Chambers Reservoir, Cedar Creek Reservoir, Lake Benbrook and the Clear Fork Trinity River. The report lists chloramines as the disinfectant. Keller’s 2024 level was 2.83 ppm, with a range of 1.00 to 3.60 ppm. This is a drinking water disinfectant. It is not a pool chlorine reading. ## What do the reports say about hardness, pH and alkalinity? The Keller report shows Fort Worth’s sampling results. Fort Worth also publishes a newer report for 2025. Reading Keller 2024 report Fort Worth 2025 report Total hardness as CaCO3 76.5 to 175 ppm 108 to 150 ppm Hardness in grains 5 to 10 grains per gallon 6 to 9 grains per gallon pH 7.8 to 8.5 7.8 to 8.5 Total alkalinity as CaCO3 73.3 to 149 ppm 99.7 to 124 ppm Total dissolved solids 156 to 289 ppm 182 to 244 ppm Calcium 23.6 to 61.5 ppm 37.6 to 48.1 ppm The ranges are wide. Tap water changes over the year, so your fill water can differ from week to week. ## How do I read the ranges? The Keller report states that ppm means parts per million, which equals milligrams per liter. It also lists grains per gallon as a unit of hardness. A range runs from the lowest to the highest result in that year. The 2024 Keller range is wider than Fort Worth’s 2025 range, but both sit in the same band of 5 to 10 grains per gallon. A single test at your tap can land anywhere inside the range. ## Why does tap water matter for a Keller pool? Tap water is what you add when you fill and top off. [Evaporation](https://marinapool.multisites.ai/glossary/evaporation-loss) removes water but leaves minerals behind, so a pool can drift well past the tap numbers. The pool test is the real reading. Check these three first: 1. [Calcium hardness](https://marinapool.multisites.ai/glossary/calcium-hardness): the mineral level that affects plaster and equipment. 2. pH: tap water in both reports can sit above 8, so pH can rise after a fill. 3. Total alkalinity: it steadies pH, and a fill moves it. Our [pool water chemistry chart](https://marinapool.multisites.ai/guides/pool-water-chemistry-chart) shows how the readings fit together. ## What does mineral buildup mean for a salt cell? A [salt chlorine generator](https://marinapool.multisites.ai/glossary/salt-chlorine-generator) makes chlorine from salt in the pool water. Minerals can collect on the [salt cell](https://marinapool.multisites.ai/glossary/salt-cell) as scale. Many systems warn you when this happens. Scale depends on pH, alkalinity, calcium hardness and temperature together, so tap water alone does not decide it. Our [saltwater vs chlorine guide](https://marinapool.multisites.ai/guides/saltwater-vs-chlorine-pool-texas) covers upkeep. If you have a salt system and see a scale warning, test the water first. Then have the cell inspected. Marina Pool Services installs and services salt systems. See the [salt water system page](https://marinapool.multisites.ai/our-services/salt-water-system-installation). ## What should a Keller pool owner do? Step Why Test the pool before and after a large fill Shows what the fill changed Keep a log of readings Lets you spot slow drift Check the salt cell if you have one Catches scale early Ask a pro before a big drain A drain can cost water and stress a pool You can read the full report on the [City of Keller report page](https://www.cityofkeller.com/home/showpublisheddocument/30053/638846240927900000) and Fort Worth’s report on the [Fort Worth water quality page](https://www.fortworthtexas.gov/departments/water/water-quality). Check the date on each version, since reports change every year. For more on local care, see our North Texas pool care guide. See our [Keller service page](https://marinapool.multisites.ai/service-areas/pool-repair-keller-tx) and our areas page. ## Next step If your salt cell shows scale or your water keeps drifting, we can help. See our [salt water system service](https://marinapool.multisites.ai/our-services/salt-water-system-installation), call (817) 896-1120 or use the quote form at [/contact](https://marinapool.multisites.ai/contact). ## Frequently asked questions ### Who supplies Keller's water? Keller's 2024 drinking water quality report says the City of Keller purchases its water from the City of Fort Worth. The report names Lake Worth, Lake Bridgeport, Richland Chambers Reservoir, Cedar Creek Reservoir, Lake Benbrook and the Clear Fork Trinity River as sources. ### How hard is Keller's water? Keller's 2024 report lists total hardness of 76.5 to 175 ppm, which the report gives as 5 to 10 grains per gallon. Fort Worth's 2025 report lists 108 to 150 ppm, or 6 to 9 grains per gallon. Both are ranges, so the value at your tap changes. ### Does hard water hurt a salt cell? Minerals can form scale on a salt cell, and many salt systems warn you when scale builds up. Scale depends on the whole pool balance, not tap water alone. If your system shows a scale warning, test the water and ask a pro to inspect the cell. ## Pool terms on this page - [Salt chlorine generator](https://marinapool.multisites.ai/glossary/salt-chlorine-generator) - [Total dissolved solids](https://marinapool.multisites.ai/glossary/total-dissolved-solids) - [Calcium hardness](https://marinapool.multisites.ai/glossary/calcium-hardness) - [Total alkalinity](https://marinapool.multisites.ai/glossary/total-alkalinity) - [Fill water](https://marinapool.multisites.ai/glossary/fill-water) - [Salt cell](https://marinapool.multisites.ai/glossary/salt-cell) - [Plaster](https://marinapool.multisites.ai/glossary/plaster) - [Scale](https://marinapool.multisites.ai/glossary/scale) ## Sources 1. [City of Keller: 2024 Drinking Water Quality Report](https://www.cityofkeller.com/home/showpublisheddocument/30053/638846240927900000) 2. [City of Fort Worth: Water Quality Reports (2025 report)](https://www.fortworthtexas.gov/departments/water/water-quality) Written by Marina Pool Services and checked against the sources above on October 21, 2026. City rules and product guidance change, so check the linked page before you act. Follow product labels for any pool chemical. ## Keep reading - [Pool Water Chemistry Chart and What Each Number MeansMost home pools run free chlorine of 1 to 3 ppm, pH of 7.2 to 7.8, total alkalinity of 80 to 120 ppm and calcium hardness of 200 to 400 ppm. CDC sets the health floor at pH 7.0 to 7.8 and at least 1 ppm chlorine. Your equipment manual may narrow these ranges.](https://marinapool.multisites.ai/guides/pool-water-chemistry-chart) - [Saltwater vs Chlorine Pools in TexasA saltwater pool still uses chlorine. A salt cell makes it from dissolved salt instead of you adding it. That means steadier chlorine and less handling of chemicals, but more equipment to maintain, a salt cell that wears out, and pH that tends to drift up. Neither option is maintenance free.](https://marinapool.multisites.ai/guides/saltwater-vs-chlorine-pool-texas) - [Southlake Water Report in Plain English for Pool OwnersSouthlake buys all of its water from Fort Worth. Southlake's 2023 report lists total hardness of 100 to 171 ppm. Fort Worth's 2025 report lists 108 to 150 ppm. Those are tap water ranges, not pool readings, so test your pool water itself. Figures are as of October 2026.](https://marinapool.multisites.ai/post/southlake-water-report-pool-owners) - [Grapevine Water Hardness and Your Pool: 2024 Report NumbersGrapevine's 2024 water quality report lists total hardness of 117 ppm for city water and 135 ppm for Trinity River Authority water, about 6.8 and 7.9 grains per gallon. Those are tap water numbers. Your pool reading will differ, so test the pool itself. Figures are as of October 2026.](https://marinapool.multisites.ai/post/grapevine-water-hardness-pool) - [North Texas Pool Care: Heat, Storms, Pollen, and Hard WaterNorth Texas pools face triple-digit heat, spring pollen, sudden storms, and mineral-rich water. Heat and sunlight use up chlorine, storms add debris and nutrients, and evaporation leaves minerals behind. Weekly testing, a clean filter, and steady pump run time keep most pools clear. Marina Pool Services offers weekly service in Grapevine.](https://marinapool.multisites.ai/guides/north-texas-pool-care) - [Pool Equipment Lifespan and Replacement ScheduleDealers and builders put pumps at about 8 to 12 years, heaters at 7 to 10, salt cells at 3 to 7 and sand at 5 to 7. Manufacturers publish warranties, not lifespans. Real life depends on run time, water balance, heat and freezes, so use these as ranges and watch for warning signs.](https://marinapool.multisites.ai/guides/pool-equipment-lifespan) ## Need a hand with your pool? Call or text and tell us what your pool needs. Estimates are free for qualifying services, and same-day estimates are possible when the schedule allows. [Call (817) 896-1120](tel:+1-817-896-1120)[Get a quote](https://marinapool.multisites.ai/contact) ![A pool technician working on an equipment pad](https://marinapool.multisites.ai/_astro/technician-equipment-pad.BW5xZMNY_Zum1K5.webp)