City Of Gonzales Water System, LA
Lead detected, under the action levels
Latest 90th-percentile lead: 1 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.
About City Of Gonzales Water System
City Of Gonzales Water System serves about 16,806 people through 5,602 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 groundwater, in Ascension Parish County, Louisiana. EPA system ID: LA1005030; phone on file: 225-647-9567. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for City Of Gonzales Water System is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1 ppb |
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2017 | 2 ppb |
Where this result ranks
Of the 802 Louisiana systems with a lead result, the median latest reading is 0.72 ppb; 4 are over 15 ppb right now and 30 have gone over at some point. City Of Gonzales Water System's 1 ppb sits at the 66th percentile in Louisiana and the 55th nationally (higher means more lead).
Other water systems in Ascension Parish County
16 other systems share Ascension Parish County; 2 of them have a higher latest lead result than City Of Gonzales Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Parish Utilities Of Ascension | 9,732 | 0 (not detected) |
| Ascension Consolidated Utility Dist 1 | 2,229 | 0 (not detected) |
| Ascension Parish Water Works District 2 | 1,353 | 4 ppb |
| Diversion Water - Bayou Estates | 450 | 0 (not detected) |
| Cypress Trace Manufactured Housing Comm. | 140 | 0 (not detected) |
| White Oaks Manufactured Housing Comm. | 138 | 0 (not detected) |
| Plantation Mobile Home Village | 132 | 0 (not detected) |
| Roddy Road Village Ascension, Llc | 120 | 0 (not detected) |
| Diversion Water - Cypress Lakes | 111 | 0 (not detected) |
| Jimmy Babin Apartments | 96 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Gonzales, LA 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 City Of Gonzales Water System 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. Systems that went over once often dip back under; here is what that means.