Revelle 6th & 7th Addition, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 6 ppb (monitoring period 2021-2023). 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.
Revelle 6th & 7th Addition at a glance
Revelle 6th & 7th Addition serves about 125 people through 50 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Scott County, Iowa. EPA system ID: IA8215301; phone on file: 563-571-5740. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is up 4 ppb from 2 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Revelle 6th & 7th Addition is 6 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 6 ppb |
| 2020 | 2 ppb |
| 2017 | 3 ppb |
How Revelle 6th & 7th Addition compares
Of the 1,066 Iowa systems with a lead result, the median latest reading is 1.4 ppb; 4 are over 15 ppb right now and 36 have gone over at some point. Revelle 6th & 7th Addition's 6 ppb sits at the 91st percentile in Iowa and the 93rd nationally (higher means more lead).
Nearby utilities
47 other systems share Scott County; 1 of them has a higher latest lead result than Revelle 6th & 7th Addition. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Iowa-American Wtr Co-Davenport | 147,720 | 1 ppb |
| Eldridge Water Supply | 6,726 | 1.3 ppb |
| Park View Water & Sanitary District | 2,389 | 1 ppb |
| Walcott Waterworks | 1,551 | 0 (not detected) |
| Buffalo Water Supply | 1,176 | 0 (not detected) |
| Princeton Water Supply | 923 | 5.2 ppb |
| Long Grove Muni Water Supply | 838 | 1.5 ppb |
| Iowa American Water Donahue | 335 | 0 (not detected) |
| Ponderosa Park Mhp | 320 | 0 (not detected) |
| Village Oaks Homeowners Assn | 250 | 2 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Blue Grass, IA 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 Revelle 6th & 7th Addition 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. Size matters more than most people expect: small vs large water systems.