Douglas Manor, CT
Exceeded the action level in the past
Latest 90th-percentile lead: 3.2 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.
Who runs the water here
Douglas Manor serves about 135 people through 1 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: CT1631031; phone on file: 860-423-4636. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is down 18.9 ppb from 22.1 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Douglas Manor is 22.1 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3.2 ppb |
| 2025 | 22.1 ppb over 15 |
| 2022 | 1.4 ppb |
| 2019 | 2.6 ppb |
| 2016 | 3 ppb |
Against other Connecticut systems
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. Douglas Manor's 3.2 ppb sits at the 86th percentile in Connecticut and the 84th nationally (higher means more lead).
Other water systems in Windham County
45 other systems share Windham County; 5 of them have a higher latest lead result than Douglas Manor. 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 |
What to do in your house
Test your own tap with a certified lab first-draw sample; Windham, 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 Douglas Manor 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. Why an old exceedance still matters: over the limit before, under it now.