Thompson Hill Water Co - Paula Lane Div, CT
Exceeded the action level in the past
Latest 90th-percentile lead: 3.9 ppb (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 result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
About Thompson Hill Water Co - Paula Lane Div
Thompson Hill Water Co - Paula Lane Div serves about 85 people through 25 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Windham County, Connecticut. EPA system ID: CT1410661; phone on file: 860-923-9543. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Thompson Hill Water Co - Paula Lane Div's lead record
That is up 2.5 ppb from 1.4 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Thompson Hill Water Co - Paula Lane Div is 54 ppb across 19 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3.9 ppb |
| 2025 | 1.4 ppb |
| 2025 | 1.8 ppb |
| 2024 | 2.3 ppb |
| 2024 | 54 ppb over 15 |
| 2023 | 1.8 ppb |
| 2023 | 2.2 ppb |
| 2022 | 1.8 ppb |
| 2022 | 1.6 ppb |
| 2021 | 1.8 ppb |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 16 ppb over 15 |
| 2018 | 5.4 ppb |
| 2016 | 4 ppb |
| 2016 | 10 ppb |
Where this result ranks
Of the 493 Connecticut systems with a lead result, the median latest reading is 0.8 ppb; 2 are over 15 ppb right now and 49 have gone over at some point. Thompson Hill Water Co - Paula Lane Div's 3.9 ppb sits at the 88th percentile in Connecticut and the 87th nationally (higher means more lead).
Neighbouring systems
45 other systems share Windham County; 4 of them have a higher latest lead result than Thompson Hill Water Co - Paula Lane Div. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Windham Water Works | 21,214 | 0 (not detected) |
| Putnam Water Pollution Control Authority | 7,300 | 0 (not detected) |
| Ctwc - Crystal System | 6,378 | 2.1 ppb |
| Ctwc - Gallup System | 2,538 | 2.3 ppb |
| Ctwc - Plainfield System | 1,713 | 0 (not detected) |
| Ctwc - Thompson System | 1,070 | 1.1 ppb |
| Woodstock Academy South Campus | 620 | 7.9 ppb |
| Pomfret School | 400 | 0 (not detected) |
| Ctwc - Ashford Park Division | 334 | 0 (not detected) |
| Wyndham Park Apartments | 312 | 1.4 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Thompson, CT 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 Thompson Hill Water Co - Paula Lane Div 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. The lead result guide covers how utilities pick the homes they sample. More in what a past exceedance means today.