Kissimmee · Osceola County · ranked #25 of 25
Toho Water Authority Eastern water quality
Toho Water Authority Eastern serves about 110,102 people. Its own testing from 2013 to 2024 shows 3 contaminants above EWG health guidelines, led by HAA9 at 548× the guideline. Its averages are within today's federal legal limits.
Every result above the guidelines
| Contaminant | Average level | EWG health guideline | Federal legal limit | Times the guideline |
|---|---|---|---|---|
| Haloacetic acids (HAA9)Disinfection by-products | 32.9 ppb | 0.06 ppb | No federal limit | 548× |
| Total trihalomethanes (TTHMs)Disinfection by-products | 49.3 ppb | 0.15 ppb | 80 ppb | 328× |
| Haloacetic acids (HAA5)Disinfection by-products | 29.3 ppb | 0.1 ppb | 60 ppb | 293× |
What treats it
- Disinfection by-products (trihalomethanes, haloacetic acids and related compounds) form when chlorine or chloramine reacts with natural matter in the source water. Carbon filtration is the most common way to reduce them, and every Whole Home package includes a whole-home carbon stage, so it covers every tap and shower.
- Hard water isn't in this data. If you see white crust on faucets or shower glass, Filtration + Softening adds a softener for the scale.
We don't install in Osceola County yet. We're starting in Sarasota and Manatee counties and opening new areas as licensed local plumbers sign on.
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Source: Toho Water Authority Eastern on the EWG Tap Water Database, utility testing averages 2013-2024, compiled October 2026. EWG's health guidelines are far stricter than federal legal limits. Long-term averages describe the public supply, not any one home, and aren't the same as current compliance; see your utility's latest annual water quality report. Whole Home Company sells and installs home water treatment and isn't affiliated with any utility or with EWG.