Crystal Clear Sud, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 1.6 ppb (monitoring period 2025-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Crystal Clear Sud at a glance
Crystal Clear Sud serves about 20,766 people through 6,922 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Guadalupe County, Texas. EPA system ID: TX0940015; phone on file: 830-372-1031. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2024 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Crystal Clear Sud is 3.2 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.6 ppb |
| 2024 | 1 ppb |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 3.2 ppb |
Where this result ranks
Of the 4,447 Texas systems with a lead result, the median latest reading is 0.28 ppb; 15 are over 15 ppb right now and 202 have gone over at some point. Crystal Clear Sud's 1.6 ppb sits at the 77th percentile in Texas and the 65th nationally (higher means more lead).
Neighbouring systems
13 other systems share Guadalupe County; 2 of them have a higher latest lead result than Crystal Clear Sud. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Green Valley Sud | 52,497 | 1.8 ppb |
| City Of Schertz | 41,948 | 0 (not detected) |
| Springs Hill Sud | 35,541 | 1.12 ppb |
| City Of Seguin | 32,736 | 1.45 ppb |
| City Of Cibolo | 20,331 | 1.1 ppb |
| City Of Marion | 1,971 | 5 ppb |
| Garden Oaks | 309 | 0 (not detected) |
| Shady Meadows Mobile Home Park | 64 | 0 (not detected) |
| Lago Vista Water System | 54 | 0 (not detected) |
| Memory Lane Mhp | 30 | 1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; San Marcos, TX may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Crystal Clear Sud whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.