Drinking water quality · 2024
· Verified
What's in Richardson, TX tap water
37 contaminants were measured in the Richardson, TX water system's 2024 annual report. Each is shown below against its federal limit.
- Reporting year
- 2024
- Contaminants measured
- 37
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- TX
PFAS — EPA UCMR5 (2023–2025)
4 PFAS compounds detected in Richardson, 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)near national p90 (12.190000000000003 ng/L across detecting U.S. systems)
PFBA
● Detected (no federal limit)near national p90 (18 ng/L across detecting U.S. systems)
PFPeA
● Detected (no federal limit)near 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
Richardson, TX buys its drinking water from NORTH TEXAS MWD WYLIE WTP, DALLAS WATER UTILITY.
Source
Treatment
Distribution
Also buys water from NORTH TEXAS MWD WYLIE WTP, DALLAS WATER UTILITY.
Historical readings · EPA Six-Year Review (2012–2019)
13 historically-detected contaminants in Richardson, 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) |
|---|---|---|---|
TTHM worst: 2014 | 0.0677 mg/L 85% | 0.08 mg/L | '12'13'14'15'16'17'18'19 |
HAA5 worst: 2015 | 0.0487 mg/L 81% | 0.06 mg/L | '12'13'14'15'16'17'18'19 |
COPPER worst: 2012 | 0.898 mg/L near national p90 | — | '12'13'16'17 |
LEAD worst: 2012 | 0.00455 mg/L | — | '12'13'16'17 |
DBAA worst: 2012 | 0.0026 mg/L | — | '12'13'14'15'16'17'18'19 |
DCAA worst: 2012 | 0.0209 mg/L | — | '12'13'14'15'16'17'18'19 |
MBAA worst: 2012 | 0.0053 mg/L | — | '12'13'14'15'16'17'18'19 |
MCAA worst: 2012 | 0.0038 mg/L | — | '12'13'14'15'17'18'19 |
TCAA worst: 2012 | 0.0098 mg/L | — | '12'13'14'15'16'17'18'19 |
BROMODICHLOROMETHANE worst: 2012 | 0.0178 mg/L | — | '12'13'14'15'16'17'18'19 |
BROMOFORM worst: 2012 | 0.0011 mg/L | — | '12'13'14'15'16'17'18'19 |
CHLOROFORM worst: 2012 | 0.0221 mg/L | — | '12'13'14'15'16'17'18'19 |
DIBROMOCHLOROMETHANE worst: 2012 | 0.0098 mg/L | — | '12'13'14'15'16'17'18'19 |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 2.63 mg/LAverageSystem-wide | 4 mg/LMRDL | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.537–0.968 mg/LRangeSystem-wide | 4 mg/LMCL | Within the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.79 mg/LHighest single sampleSystem-wide | 10 mg/LMCL | Within the limit |
| ChlorideA naturally occurring salt compound. | 30–107 mg/LRangeSystem-wide | None set | Detected — no federal limit |
| SulfateA naturally occurring mineral from rock and soil. | 76.8–171 mg/LRangeSystem-wide | None set | Detected — no federal limit |
Disinfection byproducts
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 4.7 pCi/LHighest single sampleSystem-wide | 50 pCi/LMCL | Within the limit |
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0–0 pCi/LRangeSystem-wide | 5 pCi/LMCL | None detected |
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 0–0 pCi/LRangeSystem-wide | 15 pCi/LMCL | None detected |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| AtrazineA widely used agricultural herbicide that reaches water through runoff. | 0.2 ug/LHighest single sampleSystem-wide | 3 ug/LMCL | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| BariumA metal from erosion of natural deposits and industrial discharge. | 0.048 mg/LHighest single sampleSystem-wide | 2 mg/LMCL | Within the limit |
| Antimony | 0–0 ug/LRangeSystem-wide | 6 ug/LMCL | None detected |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 0–0 ug/LRangeSystem-wide | 10 ug/LMCL | None detected |
| Beryllium | 0–0 ug/LRangeSystem-wide | 4 ug/LMCL | None detected |
| Chromium, TotalTotal chromium — the sum of all chromium forms, from natural deposits and industrial discharge. | 0–0 ug/LRangeSystem-wide | 100 ug/LMCL | None detected |
| SeleniumA trace element from natural deposits and industrial discharge. | 0–0 ug/LRangeSystem-wide | 50 ug/LMCL | None detected |
| ZincA naturally occurring metal that can also enter water from corroding pipes. | 0–0 mg/LRangeSystem-wide | None set | None detected |
| CalciumA naturally occurring mineral that contributes to water hardness. | 26.5–69.8 mg/LRangeSystem-wide | None set | Detected — no federal limit |
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 4.9–9.77 mg/LRangeSystem-wide | None set | Detected — no federal limit |
| ManganeseA naturally occurring metal from soil and rock. | 0.159 mg/LHighest single sampleSystem-wide | None set | Detected — no federal limit |
| NickelA metal from natural deposits and industrial discharge. | 0.0047–0.0048 mg/LRangeSystem-wide | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 95.4 mg/LHighest single sampleSystem-wide | None set | Detected — no federal limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Cryptosporidium | 0MaximumSystem-wide | None set | None detected |
| Giardia lamblia | 0.09–0.18RangeSystem-wide | None set | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| AlkalinityA measure of the water's capacity to neutralize acids. | 51–139 mg/LRangeSystem-wide | None set | Detected — no federal limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 82–312 mg/LRangeSystem-wide | None set | Detected — no federal limit |
| pHA measure of how acidic or basic the water is. | 6.39–9.17RangeSystem-wide | None set | Detected — no federal limit |
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 492 mg/LHighest single sampleSystem-wide | None set | Detected — no federal limit |
People also ask about Richardson, TX's water
+Is Richardson, TX tap water safe to drink in 2024?
Every one of the 37 contaminants measured in Richardson, 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 Richardson, TX tap water?
37 contaminants were measured in Richardson, 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.
+Where does the data on this page come from?
Every value is transcribed from Richardson, 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 Richardson, 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.