Aquarion-Carmen Hill, CT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About Aquarion-Carmen Hill
Aquarion-Carmen Hill serves about 322 people through 125 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Litchfield County, Connecticut. EPA system ID: CT0960101; phone on file: 203-926-4320. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is down 1.3 ppb from 1.3 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Aquarion-Carmen Hill is 6 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 1.3 ppb |
| 2025 | 2 ppb |
| 2024 | 1 ppb |
| 2023 | 1 ppb |
| 2020 | 6 ppb |
| 2017 | 3 ppb |
How Aquarion-Carmen Hill compares
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. Aquarion-Carmen Hill's reported as 0 (not detected) sits at the 24th percentile in Connecticut and the 19th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
72 other systems share Litchfield County; 50 of them have a higher latest lead result than Aquarion-Carmen Hill. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Torrington Water Company | 37,915 | 0 (not detected) |
| Watertown Water & Sewer Authority | 9,972 | 2 ppb |
| Winsted Water Works | 7,784 | 2.6 ppb |
| Watertown Fire District | 6,718 | 2.2 ppb |
| Ctwc - Naugatuck Reg-Terryville System | 5,607 | 0.6 ppb |
| Ctwc - Naugatuck Reg-Thomaston System | 3,789 | 2.8 ppb |
| Aquarion-Litchfield Regional | 3,097 | 2 ppb |
| Aquarion-Salisbury | 1,932 | 0 (not detected) |
| Aquarion-New Hartford | 1,872 | 1.4 ppb |
| Aquarion-North Canaan | 1,481 | 1.3 ppb |
What to do in your house
Look up your address in Aquarion-Carmen Hill's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Aquarion-Carmen Hill 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. A zero today does not rule out a jump later - the rules are tightening in 2027.