Rock Creek Mesa, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 3.5 ppb (monitoring period 2026-2028). 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.
About Rock Creek Mesa
Rock Creek Mesa serves about 225 people through 87 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 surface water, in El Paso County, Colorado. EPA system ID: CO0121725; phone on file: 719-576-0746. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 2 ppb from 1.5 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Rock Creek Mesa is 3.5 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2028 | 3.5 ppb |
| 2025 | 1.5 ppb |
| 2021 | 1.5 ppb |
| 2020 | 1.7 ppb |
| 2019 | 2.1 ppb |
| 2018 | 0 (not detected) |
| 2017 | 2.9 ppb |
| 2016 | 1.3 ppb |
Against other Colorado systems
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. Rock Creek Mesa's 3.5 ppb sits at the 87th percentile in Colorado and the 85th nationally (higher means more lead).
Other water systems in El Paso County
69 other systems share El Paso County; 7 of them have a higher latest lead result than Rock Creek Mesa. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Colorado Springs Utilities | 464,111 | 5.7 ppb |
| Us Department Of The Army Fort Carson | 48,000 | 10.4 ppb |
| Cherokee Md | 29,610 | 2 ppb |
| Widefield Wsd | 27,640 | 1.9 ppb |
| Fountain City Of | 25,130 | 4.4 ppb |
| Security Water District | 20,000 | 1.9 ppb |
| Woodmoor Wsd | 18,031 | 0 (not detected) |
| Us Air Force Academy | 16,876 | 0.6 ppb |
| Woodmen Hills Md | 13,888 | 0 (not detected) |
| Meridian Service Md | 12,760 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Colorado Springs, 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 Rock Creek Mesa whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1480 ppb (copper action level 1,300 ppb).
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. What a 90th-percentile result does and does not tell you: how to read a lead result. The action level is dropping - the 10 ppb rule from 2027.