Drinking water quality · 2024
· Verified
What's in Lewisville, TX tap water
28 contaminants were measured in the Lewisville, TX water system's 2024 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2024
- Contaminants measured
- 28
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Fluoride
- Service area
- TX
PFAS — EPA UCMR5 (2023–2025)
4 PFAS compounds detected in Lewisville, TX
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
PFBA
● Detected (no federal limit)below national p90 (18 ng/L across detecting U.S. systems)
PFHxA
● Detected (no federal limit)below national p90 (12.190000000000003 ng/L across detecting U.S. systems)
PFPeA
● Detected (no federal limit)below national p90 (15.95999999999999 ng/L across detecting U.S. systems)
PFBS
● Detected (no federal limit)below national p90 (13.909999999999979 ng/L across detecting U.S. systems)
Where your water comes from · EPA SDWIS
Lewisville, TX's drinking water comes from surface water, drawn from 2 sources.
Source
- INTAKE · 2
Treatment
- SWTP - CITY OF LEWISVILLE
- BOOSTER PLANT - S VALLEY PARKWAY
- BOOSTER PLANT - WINDHAVEN PARKWAY
- + 1 more
Distribution
Also buys water from DALLAS WATER UTILITY, UTRWD REGIONAL WATER TREATMENT PLANT.
Historical readings · EPA Six-Year Review (2012–2019)
27 historically-detected contaminants in Lewisville, TX
Every U.S. public water system reports compliance-monitoring data to EPA. The Six-Year Review releases the 2012–2019 window as a single dataset — here's what your system reported, year by year. Values shown are the highest detection per analyte per year, compared to the federal MCL.
| Contaminant | Worst detection | EPA limit | Years (2012–2019) |
|---|---|---|---|
CYANIDE worst: 2015 | 0.153 mg/L within above national p90 | 0.2 mg/L | '14'15'16'18'19 |
HAA5 worst: 2015 | 0.0399 mg/L within | 0.06 mg/L | '12'13'14'15'16'17'18'19 |
TTHM worst: 2018 | 0.0383 mg/L within | 0.08 mg/L | '12'13'14'15'16'17'18'19 |
ARSENIC worst: 2015 | 0.0045 mg/L within below national p90 | 0.01 mg/L | '12'14'15'17 |
RADIUM 226 228 worst: 2017 | 1.5 pCi/L within below national p90 | 5 pCi/L | '17 |
NITRITE worst: 2014 | 0.21 mg/L within | 1 mg/L | '14 |
NITRATE worst: 2015 | 2.08 mg/L within | 10 mg/L | '12'13'14'15'16'17'18'19 |
NITRATE NITRITE worst: 2015 | 2.08 mg/L within | 10 mg/L | '12'14'15 |
FLUORIDE worst: 2012 | 0.7 mg/L within | 4 mg/L | '12'13'14'15'16'17'18'19 |
ATRAZINE worst: 2013 | 0.00039 mg/L within below national p90 | 0.003 mg/L | '12'13'14'15'17'18'19 |
SIMAZINE worst: 2012 | 0.00039 mg/L within | 0.004 mg/L | '12'13'14'15'18'19 |
SELENIUM worst: 2014 | 0.00241 mg/L within | 0.05 mg/L | '12'14'16 |
ANTIMONY worst: 2015 | 0.00025 mg/L within below national p90 | 0.006 mg/L | '13'15 |
CHROMIUM worst: 2014 | 0.00316 mg/L within below national p90 | 0.1 mg/L | '12'13'14'15'16'17 |
BARIUM worst: 2013 | 0.0435 mg/L within below national p90 | 2 mg/L | '12'13'14'15'16'17'18'19 |
THALLIUM worst: 2012 | 0.000014 mg/L within | 0.002 mg/L | '12 |
MBAA worst: 2012 | 0.0045 mg/L | — | '12'13'14'15'16'17'18'19 |
COPPER worst: 2012 | 0.534 mg/L near national p90 | — | '12'13'14'15'16'17'18'19 |
LEAD worst: 2012 | 0.00284 mg/L | — | '12'15'18'19 |
DBAA worst: 2013 | 0.0023 mg/L | — | '13'14'15'16'17'18'19 |
DCAA worst: 2012 | 0.016 mg/L | — | '12'13'14'15'16'17'18'19 |
BROMODICHLOROMETHANE worst: 2012 | 0.0069 mg/L | — | '12'13'14'15'16'17'18'19 |
MCAA worst: 2012 | 0.0136 mg/L | — | '12'13'14'15'16'17'18'19 |
TCAA worst: 2012 | 0.0041 mg/L | — | '12'13'14'15'16'17'18'19 |
BROMOFORM worst: 2012 | 0.0014 mg/L | — | '12'14'15'16 |
CHLOROFORM worst: 2012 | 0.0173 mg/L | — | '12'13'14'15'16'17'18'19 |
DIBROMOCHLOROMETHANE worst: 2012 | 0.004 mg/L | — | '12'13'14'15'16'17'18'19 |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chromium, TotalTotal chromium — the sum of all chromium forms, from natural deposits and industrial discharge. | 1–2.7 ug/LRangeSystem-wide | 100 ug/LMCLG | Within the limit |
| AluminumA common element sometimes used as a treatment coagulant. | 0.012 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| ManganeseA naturally occurring metal from soil and rock. | 0.003 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 32.77 mg/LAverageSystem-wide | None set | Detected — no federal limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| RadonA naturally occurring radioactive gas that can dissolve into groundwater. | Not detected pCi/LRangeSystem-wide | None set | None detected |
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 6.2 pCi/LReported levelSystem-wide | 0 pCi/LMCLG | Detected — no federal limit |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 5.5 ug/LRunning annual avgSystem-wide | 0 ug/LMCLG | Detected — no federal limit |
Inorganic chemicals
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| AlkalinityA measure of the water's capacity to neutralize acids. | 104.7 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| Bicarbonate | 104.7 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 162 mg/LAverageSystem-wide | None set | Detected — no federal limit |
People also ask about Lewisville, TX's water
+Is Lewisville, TX tap water safe to drink in 2024?
The 2024 Consumer Confidence Report for the Lewisville, TX water utility lists 1 contaminant at or above the federal limit: Fluoride. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in Lewisville, TX tap water?
28 contaminants were measured in Lewisville, TX's 2024 Consumer Confidence Report, spanning metals, disinfection byproducts, and inorganic chemicals. 19 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in Lewisville, TX tap water?
One contaminant in Lewisville, TX's 2024 report sits at or above the federal limit: Fluoride (176.5× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in Lewisville, TX tap water?
The contaminant with the highest measured value relative to its federal limit in the 2024 report is Fluoride, at 176.5× the federal threshold. It belongs to the inorganic chemicals family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from Lewisville, TX's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Lewisville, TX's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2024 report; a new report will replace it once the utility publishes its next annual update.