Coventry Housing Authority-Lower System, CT
Exceeded the action level in the past
Latest 90th-percentile lead: 0.7 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.
Coventry Housing Authority-Lower System at a glance
Coventry Housing Authority-Lower System serves about 80 people through 41 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Tolland County, Connecticut. EPA system ID: CT0320171; phone on file: 860-742-5518. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 1.3 ppb from 2 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Coventry Housing Authority-Lower System is 41.4 ppb across 18 monitoring periods, 6 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0.7 ppb |
| 2025 | 2 ppb |
| 2025 | 6.1 ppb |
| 2024 | 3.6 ppb |
| 2024 | 41.4 ppb over 15 |
| 2023 | 8.3 ppb |
| 2023 | 10.4 ppb over 10 |
| 2022 | 4.2 ppb |
| 2022 | 26 ppb over 15 |
| 2021 | 25.2 ppb over 15 |
| 2021 | 20.2 ppb over 15 |
| 2020 | 12.3 ppb over 10 |
| 2020 | 4 ppb |
| 2019 | 2.7 ppb |
| 2019 | 4 ppb |
| 2018 | 31.4 ppb over 15 |
| 2018 | 25.9 ppb over 15 |
| 2017 | 2 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. Coventry Housing Authority-Lower System's 0.7 ppb sits at the 48th percentile in Connecticut and the 46th nationally (higher means more lead).
Other water systems in Tolland County
63 other systems share Tolland County; 34 of them have a higher latest lead result than Coventry Housing Authority-Lower System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| University Of Connecticut - Main Campus | 27,199 | 7.6 ppb |
| Ctwc - Hebron Center Division | 1,927 | 0 (not detected) |
| Tolland Water Department | 1,251 | 0 (not detected) |
| Ctwc - Amston Lake Division | 910 | 1.3 ppb |
| Ctwc - Uconn South Eagleville Div. | 750 | 0 (not detected) |
| Ctwc - Northern Reg - Lakewood/Lakeview | 748 | 0 (not detected) |
| Ctwc - Coventry Hills Div | 700 | 0 (not detected) |
| Ctwc - South Coventry System | 501 | 3.2 ppb |
| Woodhaven Apartments | 489 | 0.6 ppb |
| Vernon Village Inc. | 430 | 0 (not detected) |
Next steps for Coventry, CT
Test your own tap with a certified lab first-draw sample; Coventry, 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 Coventry Housing Authority-Lower 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. More in what a past exceedance means today.