Doyline Waterworks District 1, LA
Lead detected, under the action levels
Latest 90th-percentile lead: 2.3 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.
Doyline Waterworks District 1 at a glance
Doyline Waterworks District 1 serves about 969 people through 323 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 Webster Parish County, Louisiana. EPA system ID: LA1119008; phone on file: 318-745-2628. They can tell you what your service line is made of and whether they pay to replace it.
Doyline Waterworks District 1's lead record
That is down 1.7 ppb from 4 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Doyline Waterworks District 1 is 4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2.3 ppb |
| 2021 | 4 ppb |
| 2020 | 1 ppb |
Against other Louisiana systems
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. Doyline Waterworks District 1's 2.3 ppb sits at the 85th percentile in Louisiana and the 76th nationally (higher means more lead).
Neighbouring systems
25 other systems share Webster Parish County; 5 of them have a higher latest lead result than Doyline Waterworks District 1. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Minden Water System | 16,281 | 0 (not detected) |
| City Of Springhill Water System | 7,800 | 1 ppb |
| Town Of Sibley Water System | 2,373 | 0.6 ppb |
| Shongaloo Water System | 2,196 | 0 (not detected) |
| Blocker Water System | 1,719 | 1 ppb |
| Pleasant Valley Water System | 1,683 | 3 ppb |
| Gil-Gal Water System | 1,551 | 0 (not detected) |
| Village Of Sarepta Water System | 1,500 | 0.5 ppb |
| Dixie Overland Water System | 1,455 | 0.59 ppb |
| Germantown Water System | 1,410 | 0 (not detected) |
Next steps for Doyline, LA
Test your own tap with a certified lab first-draw sample; Doyline, 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 Doyline Waterworks District 1 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.