Water Quality Report · Updated May 12, 2026
CITY OF COLLEGE STATION
CITY OF COLLEGE STATION delivers tap water graded D (63/100) by TapWaterSafety.org. The utility serves approximately 104,103 residents in COLLEGE STATION, Texas using groundwater. The most significant water quality concerns are: Arsenic significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. For questions, the utility can be reached at 979-764-3419.
Is COLLEGE STATION tap water safe to drink?
CITY OF COLLEGE STATION delivers tap water that earns a grade of D (63/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including arsenic significantly above health guideline.
The utility serves 104,103 residents in COLLEGE STATION, drawing from groundwater.
Public testing data identifies 10 contaminants in this water above EWG's health-based guidelines, including: Arsenic, Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Dibromochloromethane, Dibromoacetic acid, Bromodichloromethane, Bromoform, Haloacetic acids (HAA5), Bromochloroacetic acid, Chromium (hexavalent). For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
Quick actions for COLLEGE STATION residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for CITY OF COLLEGE STATION.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 2.2 ppb, 550x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 9.37 ppb, 156x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 20.8 ppb, 139x above the EWG health guideline of 0.15 ppb.
Contact CITY OF COLLEGE STATION
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for COLLEGE STATION
Filters matched to the specific contaminants in this water supply.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 63/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
2.2 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 550× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
9.37 ppb | 0.06 | — | — | — | — | — | 156× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
20.8 ppb | 0.15 | 80.0 | 100 | — | — | — | 139× over |
| Dibromochloromethane Disinfection byproduct |
7.26 ppb | 0.1 | — | — | — | — | — | 73× over |
| Dibromoacetic acid Disinfection byproduct |
1.9 ppb | 0.03 | — | — | — | — | — | 63× over |
| Bromodichloromethane Disinfection byproduct |
2.55 ppb | 0.06 | — | — | — | — | — | 43× over |
| Bromoform Disinfection byproduct |
10.2 ppb | 0.5 | — | — | — | — | — | 20× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
1.93 ppb | 0.1 | 60.0 | 60 | — | — | — | 19× over |
| Bromochloroacetic acid Disinfection byproduct |
0.189 ppb | 0.02 | — | — | — | — | — | 9.4× over |
| Chromium (hexavalent) Heavy metal |
0.06 ppb | 0.02 | — | — | — | — | — | 3.0× over |
| Chloroform Disinfection byproduct |
0.223 ppb | 0.4 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
85.8 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Selenium Heavy metal |
7.6 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Dichloroacetic acid Disinfection byproduct |
0.0324 ppb | 0.2 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
77.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
3.47 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
4.45 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
2.95 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
2.8 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
1.85 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.265 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
13.7 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.39 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.5 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
17.3 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
CITY OF COLLEGE STATION service area
This water system serves 1 community in Brazos County, Texas. Click any city for its dedicated tap water quality page.
Find the right filter for COLLEGE STATION water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.