Water Quality Report · Updated October 07, 2026
LAWTON
LAWTON delivers tap water graded C (74/100) by TapWaterSafety.org. The utility serves approximately 92,757 residents in LAWTON, Oklahoma using surface water. 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. For questions, the utility can be reached at 580-581-3301.
Is LAWTON tap water safe to drink?
LAWTON delivers tap water that earns a grade of C (74/100) from TapWaterSafety.org — an average rating, with several contaminants above health guidelines but generally compliant with US legal limits.
The utility serves 92,757 residents in LAWTON, drawing from surface water.
Public testing data identifies 14 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Dibromoacetic acid, Bromodichloromethane, Dibromochloromethane, Haloacetic acids (HAA5), Radium, combined (-226 and -228), Dichloroacetic acid, Bromate, Bromoform, Chloroform, Chlorate, Nitrate, Nitrate and nitrite. 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.
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.
Quick actions for LAWTON residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for 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.
Contact LAWTON
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 LAWTON
Filters matched to the specific contaminants in this 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.
Score breakdown
This utility's overall score of 74/100 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 |
|---|---|---|---|---|---|---|---|---|
| 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
LAWTON service area
This water system serves 1 community in Comanche County, Oklahoma. Click any city for its dedicated tap water quality page.
Find the right filter for LAWTON water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.