Summerville Water System, LA
Lead detected, under the action levels
Latest 90th-percentile lead: 3 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.
Who runs the water here
Summerville Water System serves about 1,425 people through 475 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in La Salle Parish County, Louisiana. EPA system ID: LA1059009; phone on file: 318-992-6938. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is down 3 ppb from 6 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Summerville Water System is 6 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3 ppb |
| 2023 | 6 ppb |
| 2020 | 1 ppb |
| 2017 | 0 (not detected) |
How Summerville Water System compares
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. Summerville Water System's 3 ppb sits at the 88th percentile in Louisiana and the 82nd nationally (higher means more lead).
Nearby utilities
11 other systems share La Salle Parish County; 0 of them have a higher latest lead result than Summerville Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Town Of Jena Water System | 3,614 | 0 (not detected) |
| Lasalle Waterworks District 1 | 3,240 | 0 (not detected) |
| Town Of Olla Water System | 2,565 | 0 (not detected) |
| Nebo Water System Inc | 2,460 | 1.6 ppb |
| Belah Fellowship Water System | 1,806 | 2 ppb |
| East Jena Water System Inc. | 990 | 2 ppb |
| Village Of Tullos Water System | 792 | 0 (not detected) |
| Village Of Urania Water System | 784 | 0 (not detected) |
| Whitehall Water System Inc | 627 | 0.69 ppb |
| Pleasant Ridge Water System | 540 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Jena, 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 Summerville 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Size matters more than most people expect: small vs large water systems.