Inverness Wsd, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 4 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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Inverness Wsd at a glance
Inverness Wsd serves about 8,140 people through 216 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Arapahoe County, Colorado. EPA system ID: CO0203012; phone on file: 720-274-8348. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 2 ppb from 2 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Inverness Wsd is 9.9 ppb across 20 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 4 ppb |
| 2025 | 2 ppb |
| 2025 | 2 ppb |
| 2024 | 2.7 ppb |
| 2024 | 2.6 ppb |
| 2023 | 2 ppb |
| 2023 | 0 (not detected) |
| 2022 | 3.7 ppb |
| 2022 | 2.5 ppb |
| 2021 | 3.1 ppb |
| 2021 | 9.9 ppb |
| 2020 | 2.6 ppb |
| 2020 | 4.1 ppb |
| 2019 | 7.3 ppb |
| 2019 | 6.9 ppb |
| 2018 | 7.4 ppb |
| 2018 | 3.6 ppb |
| 2017 | 8 ppb |
| 2017 | 5.1 ppb |
| 2016 | 4.6 ppb |
Where this result ranks
Of the 1,025 Colorado systems with a lead result, the median latest reading is 1 ppb; 2 are over 15 ppb right now and 71 have gone over at some point. Inverness Wsd's 4 ppb sits at the 91st percentile in Colorado and the 88th nationally (higher means more lead).
Neighbouring systems
28 other systems share Arapahoe County; 3 of them have a higher latest lead result than Inverness Wsd. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Aurora City Of | 533,407 | 4.7 ppb |
| East Cherry Creek Valley Wsd | 66,130 | 0 (not detected) |
| Englewood City Of | 59,904 | 5 ppb |
| Southgate Wsd | 55,000 | - |
| Southwest Metropolitan Wsd | 48,648 | - |
| Arapahoe Cnty Wwwa | 31,000 | 0 (not detected) |
| Platte Canyon Wsd | 19,485 | - |
| Willows Wd | 19,000 | - |
| Cherry Creek Village Wd | 9,215 | - |
| Glendale City Of | 4,400 | - |
Your move
Test your own tap with a certified lab first-draw sample; Englewood, CO 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 Inverness Wsd 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. The action level is dropping - the 10 ppb rule from 2027.