Your local water, explained
2025 city results, plus dated NTMWD hardness evidence.
McKinney's 2026 publication reports 2025 water data. Its city measurements stay separate from NTMWD supplier hardness ranges, which provide the starting evidence for a scale-control recommendation.
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 data with supplier values individually dated
Results for City of McKinney 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 ↗2.22ppm
City average of quarterly data; individual samples0.2–3.8 ppm
The 0.2 ppm sample occurred during annual chlorine maintenance, when ammonia addition temporarily stops; ordinary treatment uses chloramine.
2025
View source ↗35.4ppb
Highest locational running annual average
Below the report’s stated benchmark; this does not mean absent or describe an individual tap.
2025
View source ↗20.5ppb
Highest locational running annual average
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 NTMWD supplier results
These values are measured at supplying plants, not individual McKinney homes.
2025
View source ↗0.903ppb
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 ↗0.397ppm
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 | 2.22 ppmCity average of quarterly data; individual samples0.2–3.8 ppm | 2025View source ↗ | Below 4 ppm MRDLThe 0.2 ppm sample occurred during annual chlorine maintenance, when ammonia addition temporarily stops; ordinary treatment uses chloramine. |
| Total trihalomethanes (TTHM) | 35.4 ppbHighest locational running annual average | 2025View source ↗ | Below 80 ppb comparisonBelow the report’s stated benchmark; this does not mean absent or describe an individual tap. |
| Haloacetic acids (HAA5) | 20.5 ppbHighest locational running annual average | 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 NTMWD supplier results | 2025View source ↗ | Below 4 ppm MCL comparisonThese values are measured at supplying plants, not individual McKinney homes. |
| Nitrate as nitrogen | 0.397 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 | 0.903 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 | 0.787 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. McKinney receives treated surface water from NTMWD. Its report includes Wylie and Leonard supplier results alongside tests collected within McKinney’s distribution system.
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
McKinney receives NTMWD-treated surface water. The hardness ranges shown come from the supplier's 2025 plant table, because a citywide numerical hardness table is not supplied here. The report's inconsistent PFBA row is not turned into a numerical PFAS claim.
A useful local question
No. McKinney's 2026 drinking-water report summarizes 2025 data, with individual rows retaining their actual sampling dates. Publication year and measurement year are different.
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.