Nueces County Wcid 4, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 1.04 ppb (monitoring period 2024-2026). 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.
Nueces County Wcid 4 at a glance
Nueces County Wcid 4 serves about 14,880 people through 5,305 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 Nueces County, Texas. EPA system ID: TX1780006; phone on file: 361-749-5201. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Nueces County Wcid 4's lead record
That is down 2.4 ppb from 3.44 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Nueces County Wcid 4 is 8.6 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.04 ppb |
| 2023 | 3.44 ppb |
| 2022 | 8.6 ppb |
| 2019 | 2.1 ppb |
| 2016 | 4.4 ppb |
How Nueces County Wcid 4 compares
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. Nueces County Wcid 4's 1.04 ppb sits at the 66th percentile in Texas and the 56th nationally (higher means more lead).
Other water systems in Nueces County
11 other systems share Nueces County; 6 of them have a higher latest lead result than Nueces County Wcid 4. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Corpus Christi | 317,247 | 1.4 ppb |
| Nueces County Wcid 3 | 14,000 | 2.38 ppb |
| Naval Air Station Corpus Christi | 7,048 | 1.29 ppb |
| Nueces Wsc | 3,165 | 0.56 ppb |
| City Of Bishop | 3,103 | 1.64 ppb |
| River Acres Wsc | 2,700 | 2.34 ppb |
| Violet Wsc | 2,670 | 1.62 ppb |
| Nueces County Wcid 5 | 933 | 0 (not detected) |
| City Of Agua Dulce | 848 | 0.64 ppb |
| City Of Driscoll | 680 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Port Aransas, 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 Nueces County Wcid 4 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Size matters more than most people expect: small vs large water systems.