Drinking water quality · 2024
· Verified
What's in Plano, TX tap water
56 contaminants were measured in the Plano, TX water system's 2024 annual report. Each is shown below against its federal limit.
- Reporting year
- 2024
- Contaminants measured
- 56
- Over federal limit
- 0
- Approaching the limit
- 1
- Service area
- TX
PFAS — EPA UCMR5 (2023–2025)
4 PFAS compounds detected in Plano, 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.
PFHxA
● Detected (no federal limit)PFBA
● Detected (no federal limit)PFBS
● Detected (no federal limit)PFPeA
● Detected (no federal limit)Where your water comes from · EPA SDWIS
Plano, TX buys its drinking water from NORTH TEXAS MWD WYLIE WTP.
Source
Treatment
Distribution
Also buys water from NORTH TEXAS MWD WYLIE WTP.
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Maximum contaminant level exceededHealth-based2 violations on record · most recent Apr 2011resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 9.19–9.19 ug/LRangeSystem-wide | 5 ug/LMCLG | Approaching the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 12.4–36.5 ug/LRangeSystem-wide | None set | Within the limit |
| Chlorite | 0.187 mg/LAverageLevel of Quarterly Data | 1 mg/LMCL | Within the limit |
| BromodichloromethaneA trihalomethane disinfection byproduct. | 7.7–20.4 ug/LRangeSystem-wide | None set | Detected — no federal limit |
| BromoformA trihalomethane disinfection byproduct. | 2.07 ug/LReported levelSystem-wide | None set | Detected — no federal limit |
| ChloroformA trihalomethane formed when chlorine reacts with organic matter in water. | 20.1 ug/LReported levelSystem-wide | None set | Detected — no federal limit |
| DibromochloromethaneA trihalomethane disinfection byproduct. | 14.9 ug/LReported levelSystem-wide | None set | Detected — no federal limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 1.01 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0.00297 mg/L90th percentileAt the tap | 0.015 mg/LAction level | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 0.06 mg/LReported levelSystem-wide | 2 mg/LMCLG | Within the limit |
| Antimony | 0–0 ug/LRangeSystem-wide | None set | None detected |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Beryllium | 0–0 ug/LRangeSystem-wide | None set | None detected |
| Cadmium | 0–0 ug/LRangeSystem-wide | None set | None detected |
| MercuryA toxic metal from erosion of natural deposits and industrial runoff. | 0–0 ug/LRangeSystem-wide | None set | None detected |
| SeleniumA trace element from natural deposits and industrial discharge. | 0–0 ug/LRangeSystem-wide | None set | None detected |
| Thallium | 0–0 ug/LRangeSystem-wide | None set | None detected |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Cyanide | 128 ug/LReported levelSystem-wide | 0 ug/LMCLG | Within the limit |
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.316–0.712 mg/LRangeSystem-wide | 4 mg/LMCLG | Within the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.363 mg/LReported levelSystem-wide | 10 mg/LMCLG | Within the limit |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 2.53 mg/LAverageLevel of Quarterly Data | 4 mg/LMCL | Within the limit |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Simazine | 0.71 ug/LReported levelSystem-wide | None set | Within the limit |
| AtrazineA widely used agricultural herbicide that reaches water through runoff. | 0.1–0.2 ug/LRangeSystem-wide | None set | Within the limit |
| Benzene | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Dalapon | 0–0 ug/LRangeSystem-wide | 200 ug/LMCLG | None detected |
| DBCP1,2-dibromo-3-chloropropane — a banned soil fumigant pesticide. | 0–0 ng/LRangeSystem-wide | 0 ng/LMCLG | None detected |
| Dichloromethane | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Ethylbenzene | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Toluene | 0–0 mg/LRangeSystem-wide | 1 mg/LMCLG | None detected |
| XylenesA group of industrial solvents found in gasoline and paint. | 0–0 mg/LRangeSystem-wide | None set | None detected |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chromium | 1.3 ug/LReported levelSystem-wide | None set | Within the limit |
| Alachlor | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Carbofuran | 0–0 ug/LRangeSystem-wide | None set | None detected |
| Carbon Tetrachloride | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Chlordane | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Chlorobenzene | 0–0 ug/LRangeSystem-wide | None set | None detected |
| Dinoseb | 0–0 ug/LRangeSystem-wide | None set | None detected |
| Edb | 0–0 ng/LRangeSystem-wide | 0 ng/LMCLG | None detected |
| Endrin | 0–0 ug/LRangeSystem-wide | None set | None detected |
| Heptachlor | 0–0 ng/LRangeSystem-wide | 0 ng/LMCLG | None detected |
| Heptachlor Epoxide | 0–0 ng/LRangeSystem-wide | 0 ng/LMCLG | None detected |
| Hexachlorobenzene | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Lindane | 0–0 ng/LRangeSystem-wide | None set | None detected |
| Methoxychlor | 0–0 ug/LRangeSystem-wide | None set | None detected |
| Oxamyl | 0–0 ug/LRangeSystem-wide | None set | None detected |
| Pce | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Pentachlorophenol | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Picloram | 0–0 ug/LRangeSystem-wide | None set | None detected |
| Styrene | 0–0 ug/LRangeSystem-wide | None set | None detected |
| Tce | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Toxaphene | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
| Vinyl Chloride | 0–0 ug/LRangeSystem-wide | 0 ug/LMCLG | None detected |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Cryptosporidium | 0Reported levelSystem-wide | None set | None detected |
| Giardia lamblia | 0Reported levelSystem-wide | None set | None detected |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0–0 pCi/LRangeSystem-wide | 0 pCi/LMCLG | None detected |
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 0–0 pCi/LRangeSystem-wide | 0 pCi/LMCLG | None detected |
People also ask about Plano, TX's water
+Is Plano, TX tap water safe to drink in 2024?
Every one of the 56 contaminants measured in Plano, TX's 2024 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in Plano, TX tap water?
56 contaminants were measured in Plano, TX's 2024 Consumer Confidence Report, spanning other, metals, and vocs & pesticides. 30 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Are any contaminants in Plano, TX tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: Bromate. Approaching means measured but not in violation — a margin that can close quickly if conditions change.
+Where does the data on this page come from?
Every value is transcribed from Plano, 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 Plano, 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.