Water Quality Report · Updated May 12, 2026
MIDWEST CITY
MIDWEST CITY delivers tap water graded C (65/100) by TapWaterSafety.org. The utility serves approximately 55,935 residents in MIDWEST CITY, 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; Chromium (hexavalent) significantly above health guideline. For questions, the utility can be reached at 405-739-1204.
Is MIDWEST CITY tap water safe to drink?
MIDWEST CITY delivers tap water that earns a grade of C (65/100) from TapWaterSafety.org — an average rating, with several contaminants above health guidelines but generally compliant with US legal limits.
The utility serves 55,935 residents in MIDWEST CITY, drawing from surface water.
Public testing data identifies 15 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Chromium (hexavalent), Bromodichloromethane, Haloacetic acids (HAA5), Dibromochloromethane, Trichloroacetic acid, Chloroform, Dibromoacetic acid, Dichloroacetic acid, Bromate, Radium, combined (-226 and -228), Nitrate and nitrite, Bromoform, Uranium. 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 MIDWEST CITY residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for MIDWEST CITY.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 62.9 ppb, 1048x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 27.1 ppb, 181x above the EWG health guideline of 0.15 ppb.
Chromium (hexavalent) significantly above health guideline
Moderate concernChromium (hexavalent) detected at 3.11 ppb, 156x above the EWG health guideline of 0.02 ppb.
Contact MIDWEST CITY
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 MIDWEST CITY
Filters matched to the specific contaminants in this water supply.
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 65/100 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 |
62.9 ppb | 0.06 | — | — | — | — | — | 1048× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
27.1 ppb | 0.15 | 80.0 | 100 | — | — | — | 181× over |
| Chromium (hexavalent) Heavy metal |
3.11 ppb | 0.02 | — | — | — | — | — | 156× over |
| Bromodichloromethane Disinfection byproduct |
8.52 ppb | 0.06 | — | — | — | — | — | 142× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
8.56 ppb | 0.1 | 60.0 | 60 | — | — | — | 86× over |
| Dibromochloromethane Disinfection byproduct |
5.09 ppb | 0.1 | — | — | — | — | — | 51× over |
| Trichloroacetic acid Disinfection byproduct |
3.58 ppb | 0.1 | — | — | — | — | — | 36× over |
| Chloroform Disinfection byproduct |
13.0 ppb | 0.4 | — | — | — | — | — | 32× over |
| Dibromoacetic acid Disinfection byproduct |
0.739 ppb | 0.03 | — | — | — | — | — | 25× over |
| Dichloroacetic acid Disinfection byproduct |
4.18 ppb | 0.2 | — | — | — | — | — | 21× over |
| Bromate Disinfection byproduct |
0.558 ppb | 0.1 | 10.0 | 10 | 10 | 0.1 | — | 5.6× over |
| Radium, combined (-226 and -228) Radiological |
0.2 pCi/L | 0.05 | 5.0 | — | — | — | — | 4.1× over |
| Nitrate and nitrite Inorganic |
0.249 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.8× over |
| Bromoform Disinfection byproduct |
0.567 ppb | 0.5 | — | — | — | — | — | 1.1× over |
| Uranium Radiological |
0.48 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 1.1× over |
| Chlorate Disinfection byproduct |
167.0 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
351.6 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Vanadium Other |
7.58 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Chlorite Disinfection byproduct |
2.77 ppb | 50.0 | 1000.0 | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.288 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Molybdenum Other |
0.0957 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.0569 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0107 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.268 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
2.62 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Dalapon Pesticide/Herbicide |
0.0265 ppb | — | 200.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.109 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
11.7 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
MIDWEST CITY service area
This water system serves 1 community in Oklahoma County, Oklahoma. Click any city for its dedicated tap water quality page.
Find the right filter for MIDWEST CITY water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.