Tap Water Quality Report
Tap water quality in Tulsa, Oklahoma
Tap water in Tulsa, Oklahoma receives a grade of C (77/100) from TapWaterSafety.org. It's served by TULSA. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in Tulsa's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Tulsa.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 25.6 ppb, 427x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 34.8 ppb, 232x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 18.0 ppb, 180x above the EWG health guideline of 0.1 ppb.
EPA compliance record
Official U.S. EPA records for TULSA (system ID OK1020418) 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 Tulsa
Filters matched to the specific contaminants in Tulsa'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 Tulsa'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 |
25.6 ppb | 0.06 | — | — | — | — | — | 427× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
34.8 ppb | 0.15 | 80.0 | 100 | — | — | — | 232× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
18.0 ppb | 0.1 | 60.0 | 60 | — | — | — | 180× over |
| Bromodichloromethane Disinfection byproduct |
10.4 ppb | 0.06 | — | — | — | — | — | 173× over |
| Trichloroacetic acid Disinfection byproduct |
6.46 ppb | 0.1 | — | — | — | — | — | 65× over |
| Dichloroacetic acid Disinfection byproduct |
9.79 ppb | 0.2 | — | — | — | — | — | 49× over |
| Chloroform Disinfection byproduct |
19.3 ppb | 0.4 | — | — | — | — | — | 48× over |
| Dibromochloromethane Disinfection byproduct |
4.71 ppb | 0.1 | — | — | — | — | — | 47× over |
| Dibromoacetic acid Disinfection byproduct |
1.3 ppb | 0.03 | — | — | — | — | — | 43× over |
| Chlorite Disinfection byproduct |
206.2 ppb | 50.0 | 1000.0 | — | — | — | — | 4.1× over |
| Atrazine Pesticide/Herbicide |
0.3 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Fails EU |
| Nitrate and nitrite Inorganic |
0.299 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.1× over |
| Chromium (hexavalent) Heavy metal |
0.0112 ppb | 0.02 | — | — | — | — | — | Below guideline |
| Bromoform Disinfection byproduct |
0.211 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
79.3 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Bromochloromethane Other |
0.0203 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
42.2 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Vanadium Other |
0.568 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.384 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0953 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
0.138 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.216 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.157 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.727 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 TULSA.
General Contact
Treatment Plant
ZIP codes served
Tulsa's public water systems serve the following ZIP codes: