Cornell Hills Assoc, Inc, CT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2024-2024). 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 Cornell Hills Assoc, Inc
Cornell Hills Assoc, Inc serves about 108 people through 27 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Fairfield County, Connecticut. EPA system ID: CT0340181; phone on file: 203-628-0935. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Cornell Hills Assoc, Inc's lead record
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Cornell Hills Assoc, Inc is 3.8 ppb across 9 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 3.8 ppb |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2017 | 2 ppb |
| 2016 | 0 (not detected) |
How Cornell Hills Assoc, Inc 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. Cornell Hills Assoc, Inc's reported as 0 (not detected) sits at the 14th percentile in Connecticut and the 10th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Fairfield County
58 other systems share Fairfield County; 39 of them have a higher latest lead result than Cornell Hills Assoc, Inc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Aquarion-Eastern Fairfield County | 351,756 | 0 (not detected) |
| Aquarion-Stamford | 119,214 | 0 (not detected) |
| Danbury Water Department | 62,055 | 0 (not detected) |
| Aquarion-Greenwich | 53,297 | 0 (not detected) |
| South Norwalk Electric & Water | 42,000 | 0 (not detected) |
| Norwalk First Taxing District | 40,256 | 0 (not detected) |
| Aquarion-Darien | 18,737 | 2 ppb |
| Aquarion-New Canaan | 10,097 | 0 (not detected) |
| Bethel Water Dept | 9,507 | 0 (not detected) |
| Aquarion-Ridgefield | 7,476 | 3.1 ppb |
Your move
Look up your address in Cornell Hills Assoc, Inc'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 Cornell Hills Assoc, Inc 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.