Tap Water Quality Report
Tap water quality in GULFPORT, Mississippi
Tap water in GULFPORT, Mississippi receives a grade of B (88/100) from TapWaterSafety.org. It's served by CITY OF GULFPORT. 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; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in GULFPORT's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving GULFPORT.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 8.35 ppb, 139x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 14.1 ppb, 94x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 5.66 ppb, 57x above the EWG health guideline of 0.1 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.15 ppb.
EPA compliance record
Official U.S. EPA records for CITY OF GULFPORT (system ID MS0240003) 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 GULFPORT
Filters matched to the specific contaminants in GULFPORT'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 GULFPORT'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 |
8.35 ppb | 0.06 | — | — | — | — | — | 139× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
14.1 ppb | 0.15 | 80.0 | 100 | — | — | — | 94× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
5.66 ppb | 0.1 | 60.0 | 60 | — | — | — | 57× over |
| Arsenic Heavy metal |
0.15 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 38× over |
| Radium, combined (-226 and -228) Radiological |
0.56 pCi/L | 0.05 | 5.0 | — | — | — | — | 11× over |
| Bromochloromethane Other |
0.026 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
20.7 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Nitrate Inorganic |
0.00238 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Nitrate and nitrite Inorganic |
0.00238 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Barium Heavy metal |
8.27 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Vanadium Other |
0.0308 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Xylenes (total) Volatile organic compound |
0.539 ppb | 1800.0 | 10000.0 | — | — | — | — | Below guideline |
| Ethylbenzene Volatile organic compound |
0.0736 ppb | 300.0 | 700.0 | 1 | 10 | 0.15 | — | Below guideline |
| Strontium Radiological |
0.0173 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
0.239 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.258 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
1.15 ppb | — | — | — | — | — | — | Below guideline |
| Nitrite Inorganic |
0.00274 ppm | — | 1.0 | — | — | — | — | 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 GULFPORT.