Gilbert Water Quality Report
Population: 280K+ · TDS: 400+ ppm · 3 contaminants above EWG health guidelines
Water Hardness
Gilbert water measures 11.5 grains per gallon (gpg) — classified as Very Hard.
Contaminants Detected
All contaminants shown exceed EWG health guidelines, even if they meet federal legal limits. The worst offender exceeds guidelines by 683x.
| Contaminant | Detected | EWG Guideline | Times Above |
|---|---|---|---|
Haloacetic Acids (HAA9) Chlorine disinfection byproducts linked to cancer risk. Common across Arizona water systems. | 41.0 ppb | 0.06 ppb | 683x |
Total Trihalomethanes (TTHMs) Disinfection byproducts associated with bladder cancer and reproductive issues. | 32.5 ppb | 0.2 ppb | 163x |
Chromium-6 Hexavalent chromium detected above EWG health guidelines. No enforceable federal limit. | 0.41 ppb | 0.03 ppb | 14x |
What This Means For You
Gilbert's water is legally “safe” according to federal standards — but those standards were last updated decades ago. The EWG sets health guidelines based on the latest science, and Gilbert exceeds them on 3 contaminants.
With a hardness level of 11.5 gpg, your water is classified as very hard. That means accelerated scale buildup in your pipes, water heater, and appliances. Most water heaters in Gilbert lose 25–40% of their efficiency within 5 years from hard water deposits.
Recent: Gilbert's rapid growth has increased demand on water infrastructure, with water quality varying across newer and older distribution zones.
Flo Says:
City data shows averages across the whole system. Your home could be better or worse depending on your pipes, neighborhood, and how far you are from the treatment plant. A free in-home test shows you exactly what's coming out of your tap.
Book Your Free Water Test in Gilbert
City reports show averages. A free in-home test shows you exactly what's coming out of your tap.
Book Your Free Water Test