Shoalwater Flats Association, TX
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Shoalwater Flats Association at a glance
Shoalwater Flats Association serves about 171 people through 57 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Calhoun County, Texas. EPA system ID: TX0290036. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
Against the period ending 2025 (0.59 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Shoalwater Flats Association is 0.59 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0.59 ppb |
Against other Texas systems
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. Shoalwater Flats Association's reported as 0 (not detected) sits at the 10th percentile in Texas and the 14th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
11 other systems share Calhoun County; 9 of them have a higher latest lead result than Shoalwater Flats Association. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Port Lavaca | 12,000 | 2.31 ppb |
| Gbra Calhoun County Rural Water System | 4,482 | 1.8 ppb |
| City Of Seadrift | 1,577 | 2.28 ppb |
| Port Oconnor Improvement District | 1,139 | 3.79 ppb |
| City Of Point Comfort | 759 | 3.01 ppb |
| Sunilandings Utilities | 342 | 4.26 ppb |
| Port Alto Hoa District 1 | 213 | 4.9 ppb |
| El Campo Beach Property Owner Assn | 150 | 1.11 ppb |
| Port Alto Wsc | 96 | 3.5 ppb |
| Seaport Lakes Subdivision | 36 | - |
What to do in your house
Look up your address in Shoalwater Flats Association's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Shoalwater Flats Association 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. Small systems behave differently: why small systems go over more often.