Tap Water Quality Report
Tap water quality in LAWTON, Oklahoma
Tap water in LAWTON, Oklahoma receives a grade of C (74/100) from TapWaterSafety.org. It's served by LAWTON. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Dibromoacetic acid significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in LAWTON's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving LAWTON.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 7.11 ppb, 119x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 17.2 ppb, 115x above the EWG health guideline of 0.15 ppb.
Dibromoacetic acid significantly above health guideline
Moderate concernDibromoacetic acid detected at 2.49 ppb, 83x above the EWG health guideline of 0.03 ppb.
EPA compliance record
Official U.S. EPA records for LAWTON (system ID OK1011303) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Stage 2 Disinfectants and Disinfection Byproducts Rule | Missed testing or reporting | 07/01/2024 | Open |
| Surface Water Treatment Rule | Missed testing or reporting | 01/01/2024 | Open |
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 LAWTON
Filters matched to the specific contaminants in LAWTON'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.
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 LAWTON'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 |
7.11 ppb | 0.06 | — | — | — | — | — | 119× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
17.2 ppb | 0.15 | 80.0 | 100 | — | — | — | 115× over |
| Dibromoacetic acid Disinfection byproduct |
2.49 ppb | 0.03 | — | — | — | — | — | 83× over |
| Bromodichloromethane Disinfection byproduct |
4.21 ppb | 0.06 | — | — | — | — | — | 70× over |
| Dibromochloromethane Disinfection byproduct |
6.69 ppb | 0.1 | — | — | — | — | — | 67× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
5.54 ppb | 0.1 | 60.0 | 60 | — | — | — | 55× over |
| Radium, combined (-226 and -228) Radiological |
1.45 pCi/L | 0.05 | 5.0 | — | — | — | — | 29× over |
| Dichloroacetic acid Disinfection byproduct |
2.91 ppb | 0.2 | — | — | — | — | — | 15× over |
| Bromate Disinfection byproduct |
0.959 ppb | 0.1 | 10.0 | 10 | 10 | 0.1 | — | 9.6× over |
| Bromoform Disinfection byproduct |
3.82 ppb | 0.5 | — | — | — | — | — | 7.6× over |
| Chloroform Disinfection byproduct |
1.92 ppb | 0.4 | — | — | — | — | — | 4.8× over |
| Chlorate Disinfection byproduct |
430.3 ppb | 210.0 | — | — | — | — | — | 2.0× over |
| Nitrate Inorganic |
0.275 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.0× over |
| Nitrate and nitrite Inorganic |
0.186 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.3× over |
| Chlorite Disinfection byproduct |
29.0 ppb | 50.0 | 1000.0 | — | — | — | — | Below guideline |
| Chromium (hexavalent) Heavy metal |
0.0114 ppb | 0.02 | — | — | — | — | — | Below guideline |
| Bromochloromethane Other |
0.0144 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Vanadium Other |
3.21 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
5.03 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Molybdenum Other |
1.9 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.152 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.641 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Bromide Other |
155.7 ppb | — | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.453 ppm | — | 4.0 | 1.5 | 1.5 | — | — | 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 LAWTON.