Your local water, explained
City contaminant results, with clearly labelled supplier hardness.
Plano's 2025 report includes NTMWD plant hardness ranges and measurements from the city distribution system. The supplier ranges reach hard or very hard levels, supporting softening for scale control with a home test for final settings.
Your water → your home → your system
Your water
The report follows your water provider—not your ZIP code or county boundary.
Only the listed water system is summarized here. Choose “Other / not sure” if your bill shows a different supplier.
Confirm the provider on your bill, or choose “Other / not sure” to continue without a matched report.
Utility data is a starting point. It is not a test of your tap or a live advisory. Sources checked October 23, 2026
2025 city and supplier data
Results for City of Plano 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.
Wylie: 96–200; Leonard: 96–144mg/L as CaCO₃
Ranges from NTMWD treatment plants; not city distribution or home measurements
The supplier ranges reach hard or very hard levels, supporting a softener recommendation for scale control; measure your incoming water to size and set it correctly.
2025
View source ↗2.59ppm
Average of quarterly data; individual samples 0.38–4.00 ppm
Chloramine is the distribution disinfectant; use the correct filter configuration if reducing chloramine is a goal.
2025
View source ↗63.9ppb
Highest detected result as labelled in the city report; not a supplied LRAA
Below the report’s stated benchmark; this does not mean absent or describe an individual tap.
2025
View source ↗38.1ppb
Highest detected result as labelled in the city report; not a supplied LRAA
Below the report’s stated benchmark; this does not mean absent or describe an individual tap.
2025
View source ↗Wylie 0.492; Leonard 0.225ppm
Highest detected supplier results, not Plano tap samples
The report lists fluoride separately for two supplying plants; whole-home carbon filtration is not the same as dedicated fluoride treatment.
2025
View source ↗1.4ppb
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.
2025
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 ↗0.704ppm
Highest city distribution result
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 | Wylie: 96–200; Leonard: 96–144 mg/L as CaCO₃Ranges from NTMWD treatment plants; not city distribution or home measurements | 2025View source ↗ | Moderately hard to very hard (Wylie); moderately hard to hard (Leonard)The supplier ranges reach hard or very hard levels, supporting a softener recommendation for scale control; measure your incoming water to size and set it correctly. |
| Chloramine | 2.59 ppmAverage of quarterly data; individual samples 0.38–4.00 ppm | 2025View source ↗ | Below 4 ppm MRDLChloramine is the distribution disinfectant; use the correct filter configuration if reducing chloramine is a goal. |
| Total trihalomethanes (TTHM) | 63.9 ppbHighest detected result as labelled in the city report; not a supplied LRAA | 2025View source ↗ | Below 80 ppb comparisonBelow the report’s stated benchmark; this does not mean absent or describe an individual tap. |
| Haloacetic acids (HAA5) | 38.1 ppbHighest detected result as labelled in the city report; not a supplied LRAA | 2025View source ↗ | Below 60 ppb comparisonBelow the report’s stated benchmark; this does not mean absent or describe an individual tap. |
| Fluoride | Wylie 0.492; Leonard 0.225 ppmHighest detected supplier results, not Plano tap samples | 2025View source ↗ | Below 4 ppm MCL comparisonThe report lists fluoride separately for two supplying plants; whole-home carbon filtration is not the same as dedicated fluoride treatment. |
| Nitrate as nitrogen | 0.704 ppmHighest city distribution result | 2025View source ↗ | Below 10 ppm comparisonBelow the report’s stated benchmark; this does not mean absent or describe an individual tap. |
| Lead | 1.4 ppb90th-percentile tap sampling result; zero sites above the action level | 2025View 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 | 0.987 ppm90th-percentile tap sampling result; zero sites above the action level | 2025View 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. Plano distributes purchased surface water treated by NTMWD. Its report provides separate Wylie and Leonard treatment-plant tables, so supplier readings should not be presented as measurements throughout Plano.
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.
Explore well-water systems →Email delivery is coming soon. Copy the report link to share it now.
More about your local water
The Wylie and Leonard hardness figures belong to NTMWD supplying plants. Plano's byproduct values are labelled as highest detected results in this report, not silently converted into annual averages. A Plano address still needs to match the provider on your bill.
A useful local question
The report gives separate NTMWD Wylie and Leonard plant data. These are supplier results, not two measured values at your faucet. A current test at your home's incoming supply resolves the setting needed for a softener.
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.