Tap Water Quality Report
Tap water quality in KILLEEN, Texas
Tap water in KILLEEN, Texas receives a grade of C (70/100) from TapWaterSafety.org. It's served by CITY OF KILLEEN. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Bromochloroacetic acid significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in KILLEEN's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving KILLEEN.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 34.6 ppb, 577x above the EWG health guideline of 0.06 ppb.
Bromochloroacetic acid significantly above health guideline
Moderate concernBromochloroacetic acid detected at 7.49 ppb, 374x above the EWG health guideline of 0.02 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 39.4 ppb, 263x above the EWG health guideline of 0.15 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.222 ppb.
EPA compliance record
Official U.S. EPA records for CITY OF KILLEEN (system ID TX0140006) 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.
Recommended filters for KILLEEN
Filters matched to the specific contaminants in KILLEEN's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
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 KILLEEN'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 |
34.6 ppb | 0.06 | — | — | — | — | — | 577× over |
| Bromochloroacetic acid Disinfection byproduct |
7.49 ppb | 0.02 | — | — | — | — | — | 374× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
39.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 263× over |
| Bromodichloromethane Disinfection byproduct |
14.0 ppb | 0.06 | — | — | — | — | — | 233× over |
| Dibromoacetic acid Disinfection byproduct |
5.05 ppb | 0.03 | — | — | — | — | — | 168× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
15.7 ppb | 0.1 | 60.0 | 60 | — | — | — | 157× over |
| Dibromochloromethane Disinfection byproduct |
12.3 ppb | 0.1 | — | — | — | — | — | 123× over |
| 1,2,3-Trichloropropane* Other |
0.0592 ppb | 0.0007 | — | — | — | — | — | 85× over |
| Arsenic* Heavy metal |
0.222 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 56× over |
| Dichloroacetic acid Disinfection byproduct |
7.83 ppb | 0.2 | — | — | — | — | — | 39× over |
| Trichloroacetic acid Disinfection byproduct |
2.75 ppb | 0.1 | — | — | — | — | — | 27× over |
| Chloroform Disinfection byproduct |
8.71 ppb | 0.4 | — | — | — | — | — | 22× over |
| Bromoform Disinfection byproduct |
4.41 ppb | 0.5 | — | — | — | — | — | 8.8× over |
| Nitrate Inorganic |
0.198 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.4× over |
| Atrazine* Pesticide/Herbicide |
0.121 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Fails EU |
| Nitrate and nitrite* Inorganic |
0.09 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Aluminum* Heavy metal |
68.7 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Vanadium Other |
2.3 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Barium* Heavy metal |
55.4 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
5.41 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Molybdenum Other |
1.82 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Selenium* Heavy metal |
0.333 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0958 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.315 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Cyanide* Inorganic |
63.3 ppb | — | 200.0 | 50 | 70 | 150 | — | Fails EU |
| Fluoride* Inorganic |
0.203 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Hexadecanoic acid* Other |
9.44 ppb | — | — | — | — | — | — | Below guideline |
| Octadecanoic acid* Other |
27.1 ppb | — | — | — | — | — | — | Below guideline |
| Phenol, p-tert-butyl-* Other |
3.07 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 CITY OF KILLEEN.