Tap Water Quality Report
Tap water quality in MISSION, Texas
Tap water in MISSION, Texas receives a grade of D (62/100) from TapWaterSafety.org. It's served by 2 public water systems, primarily SHARYLAND WSC. The most significant water quality concerns are: Arsenic significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Bromochloroacetic acid significantly above health guideline; Dibromoacetic acid significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in MISSION's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utilities serving MISSION.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 1.74 ppb, 436x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 21.4 ppb, 357x above the EWG health guideline of 0.06 ppb.
Bromochloroacetic acid significantly above health guideline
Moderate concernBromochloroacetic acid detected at 6.54 ppb, 327x above the EWG health guideline of 0.02 ppb.
Dibromoacetic acid significantly above health guideline
Moderate concernDibromoacetic acid detected at 10.6 ppb, 352x above the EWG health guideline of 0.03 ppb.
Arsenic detected
Moderate concernArsenic detected at 1.38 ppb.
EPA compliance record
Official U.S. EPA records for SHARYLAND WSC (system ID TX1080033) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Water systems serving MISSION
MISSION is served by 2 public water systems. Click any utility to see its complete grade card and treatment plant contact info.
SHARYLAND WSC
- Arsenic significantly above health guideline
- Haloacetic acids (HAA9) significantly above health guideline
- Bromochloroacetic acid significantly above health guideline
CITY OF MISSION
- Haloacetic acids (HAA9) significantly above health guideline
- Bromochloroacetic acid significantly above health guideline
- Dibromoacetic acid significantly above health guideline
Recommended filters for MISSION
Filters matched to the specific contaminants in MISSION's water supply.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in MISSION's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
32.0 ppb | 0.06 | — | — | — | — | — | 533× over |
| Arsenic Heavy metal |
1.74 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 436× over |
| Bromochloroacetic acid Disinfection byproduct |
7.57 ppb | 0.02 | — | — | — | — | — | 379× over |
| Dibromoacetic acid Disinfection byproduct |
10.6 ppb | 0.03 | — | — | — | — | — | 352× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
42.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 283× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
17.8 ppb | 0.1 | 60.0 | 60 | — | — | — | 178× over |
| Dibromochloromethane Disinfection byproduct |
13.4 ppb | 0.1 | — | — | — | — | — | 134× over |
| Bromodichloromethane Disinfection byproduct |
7.14 ppb | 0.06 | — | — | — | — | — | 119× over |
| Bromoform Disinfection byproduct |
18.0 ppb | 0.5 | — | — | — | — | — | 36× over |
| Dichloroacetic acid Disinfection byproduct |
5.36 ppb | 0.2 | — | — | — | — | — | 27× over |
| Trichloroacetic acid Disinfection byproduct |
1.12 ppb | 0.1 | — | — | — | — | — | 11× over |
| Chlorite Disinfection byproduct |
437.9 ppb | 50.0 | 1000.0 | — | — | — | — | 8.8× over |
| Chromium (hexavalent) Heavy metal |
0.133 ppb | 0.02 | — | — | — | — | — | 6.7× over |
| Chloroform Disinfection byproduct |
2.61 ppb | 0.4 | — | — | — | — | — | 6.5× over |
| Nitrate Inorganic |
0.342 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.4× over |
| Uranium Radiological |
0.8 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 1.9× over |
| Chlorate Disinfection byproduct |
247.0 ppb | 210.0 | — | — | — | — | — | 1.2× over |
| 1,4-Dioxane Semi-volatile organic compound |
0.107 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Aluminum Heavy metal |
156.1 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Vanadium Other |
4.47 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Atrazine Pesticide/Herbicide |
0.018 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Below guideline |
| Molybdenum Other |
6.09 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
98.6 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Selenium Heavy metal |
3.72 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Bromochloromethane Other |
0.00374 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
1.25 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
4.8 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.358 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
2.1 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
1.54 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Cyanide Inorganic |
73.3 ppb | — | 200.0 | 50 | 70 | 150 | — | Fails EU |
| Erucylamide Other |
2.9 ppb | — | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.546 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.713 ppb | — | — | — | — | — | — | Below guideline |
| Hexadecanoic acid Other |
9.74 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
38.5 ppb | — | — | — | — | — | — | Below guideline |
| Octadecanoic acid Other |
12.2 ppb | — | — | — | — | — | — | Below guideline |
| Phenol, p-tert-butyl- Other |
2.7 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from SHARYLAND WSC.