Your local water, explained
Moderately hard water, with chloramine in distribution.
Arlington's 2025 report gives a 94 mg/L hardness average and an 80.4–110 range. Start with filtration for taste and odor goals; use your actual scale concerns and a home test to decide whether softening adds value.
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Utility data is a starting point. It is not a test of your tap or a live advisory. Sources checked October 23, 2026
2025 data; lead and copper 2023
Results for City of Arlington customers. Confirm the retail utility and system on your bill.
See the amount, the comparison and what it means. “Below” refers to the stated benchmark, not zero risk.
94 averagemg/L as CaCO₃
Annual reported average; range 80.4–110 mg/L; utility gives 5.5 gpg average
All of the reported range falls in the USGS moderately hard category; a softener targets mineral scale, not chlorine taste.
2025
View source ↗3.7 averageppm
Reported annual average of routine-site samples
Chloramine residual is present below the report’s annual benchmark; choose filtration specifically configured for chloramine if that is the target.
2025
View source ↗11.5 averageppb
Reported annual average of routine-site samples
Below the report’s stated benchmark; this does not mean absent or describe an individual tap.
2025
View source ↗7.8 averageppb
Reported annual average of routine-site samples
Below the report’s stated benchmark; this does not mean absent or describe an individual tap.
2025
View source ↗0.52 averageppm
Reported average; highest sample 0.77 ppm
Below the report’s stated benchmark; this does not mean absent or describe an individual tap.
2025
View source ↗1.3ppb
90th-percentile tap sampling result; zero sites above the action level
This system-level sampling statistic is not a result for your home; plumbing can affect lead at an individual tap.
2023
View source ↗Not verified
No compound-specific result assessed in this summary
This does not establish whether PFAS are present or absent. Check compound-specific testing before choosing treatment.
2025 report review
View source ↗0.370 averageppm
Reported average; highest sample 0.844 ppm
Below the report’s stated benchmark; this does not mean absent or describe an individual tap.
2025
View source ↗Selected useful results—not a replacement for the utility’s complete report. Older measurements retain their original year.
Open the complete utility report ↗
| What was measured | Reported amount | Sample year / source date | How to read it |
|---|---|---|---|
| Water hardness | 94 average mg/L as CaCO₃Annual reported average; range 80.4–110 mg/L; utility gives 5.5 gpg average | 2025View source ↗ | Moderately hardAll of the reported range falls in the USGS moderately hard category; a softener targets mineral scale, not chlorine taste. |
| Chloramine | 3.7 average ppmReported annual average of routine-site samples | 2025View source ↗ | Below 4 ppm MRDLChloramine residual is present below the report’s annual benchmark; choose filtration specifically configured for chloramine if that is the target. |
| Total trihalomethanes (TTHM) | 11.5 average ppbReported annual average of routine-site samples | 2025View source ↗ | Below 80 ppb comparisonBelow the report’s stated benchmark; this does not mean absent or describe an individual tap. |
| Haloacetic acids (HAA5) | 7.8 average ppbReported annual average of routine-site samples | 2025View source ↗ | Below 60 ppb comparisonBelow the report’s stated benchmark; this does not mean absent or describe an individual tap. |
| Fluoride | 0.52 average ppmReported average; highest sample 0.77 ppm | 2025View source ↗ | Below 4 ppm comparisonBelow the report’s stated benchmark; this does not mean absent or describe an individual tap. |
| Nitrate | 0.370 average ppmReported average; highest sample 0.844 ppm | 2025View source ↗ | Below 10 ppm comparisonBelow the report’s stated benchmark; this does not mean absent or describe an individual tap. |
| Lead | 1.3 ppb90th-percentile tap sampling result; zero sites above the action level | 2023View source ↗ | Below 15 ppb action levelThis system-level sampling statistic is not a result for your home; plumbing can affect lead at an individual tap. |
| Copper | 0.175 ppm90th-percentile tap sampling result; zero sites above the action level | 2023View source ↗ | Below 1.3 ppm action levelBelow the action level used in this report; this is not a measurement at every customer’s tap. |
| PFAS | Not verified No compound-specific result assessed in this summary | 2025 report reviewView source ↗ | Cannot assess high or lowThis does not establish whether PFAS are present or absent. Check compound-specific testing before choosing treatment. |
ppm ≈ mg/L; ppb ≈ µg/L; ppt ≈ ng/L in drinking water. Hardness in gpg = mg/L as CaCO₃ ÷ 17.1. ND means not detected at the method’s reporting limit—not zero.
MCL is a maximum contaminant level. MRDL is a disinfectant limit. Lead/copper action levels use system sampling percentiles and are not a safe-tap threshold. TTHM/HAA5 compliance uses locational annual averages.
PFOA/PFOS comparisons use EPA’s 4 ppt values. Historical detections are not a present compliance finding; EPA assesses compliance using running annual averages. Rule implementation is being reviewed. EPA PFAS benchmarks and implementation ↗
Choose the system size, keep useful existing equipment, and review your filtration goals.
Source water. Arlington purchases surface water from Tarrant Regional Water District: Cedar Creek, Richland-Chambers, Lake Arlington and Lake Benbrook. Ozone is primary disinfection, with chloramine added before storage.
Continue with your home details for general filtration guidance. We will not use another utility’s numbers as your result.
Find My Water System →A city report cannot establish a well’s water quality. Well-water treatment depends on your test results and site conditions.
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More about your local water
Arlington purchases surface water through Tarrant Regional Water District and treats it before distribution. Its report distinguishes average, minimum and maximum results. Do not substitute Fort Worth's hardness range simply because both cities are in Tarrant County.
A useful local question
Not in the 2025 range shown here. The 94 mg/L average and 80.4–110 range are moderately hard under USGS guidance. A softener can address mineral spots, but this report does not support labelling Arlington's supply very hard.
We keep each utility’s results separate, show the reported sample year, and distinguish averages, maxima and tap-sampling percentiles. Hardness classifications use USGS ranges. Missing data stays unknown.
Sources checked October 23, 2026
Your water → your home → your system
Choose the system size, keep useful existing equipment, and review your filtration goals.