Comal County Lake Quality
Texas, 3 lakes, average grade A (Excellent)
Comal County has 3 graded lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The county's average grade is A — among the cleanest in {{stateName}}. 3 lakes pull an A on their own, and almost none fall into the D or F brackets.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Canyon Lake Headwaters (A); the most-stressed is Canyon Lake Headwaters (A).
Quick Answers for Comal County
Planning a trip? Check special fishing regulations for Canyon Lake Headwaters — or check the official Texas fishing regulations.
All Lakes in Comal County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Canyon Lake Headwaters | A | 4.6 ft | - |
| 2 | Canyon Lake Mid Lake | A | 4.6 ft | - |
| 3 | Canyon Lake | A | 10.8 ft | - |
Other Counties in Texas
See how Comal County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 17 states.
Where to stay near Comal County
Top-rated places to stay near Comal County
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Comal County?
Get lake water-quality report cards plus the best cabin & lodging deals near Comal County — straight to your inbox. No spam, unsubscribe anytime.
Source: EPA National Aquatic Resource Surveys, 2026.