West Central Rwa-Boyer System, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.7 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.
About West Central Rwa-Boyer System
West Central Rwa-Boyer System serves about 1,715 people through 690 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Sac County, Iowa. EPA system ID: IA1400903; phone on file: 712-655-2534. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is down 2.3 ppb from 4 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for West Central Rwa-Boyer System is 4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1.7 ppb |
| 2020 | 4 ppb |
| 2017 | 0 (not detected) |
Where this result ranks
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. West Central Rwa-Boyer System's 1.7 ppb sits at the 54th percentile in Iowa and the 66th nationally (higher means more lead).
Neighbouring systems
7 other systems share Sac County; 5 of them have a higher latest lead result than West Central Rwa-Boyer System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sac City Municipal Water Plant | 2,093 | 0 (not detected) |
| Lake View Water Supply | 1,133 | 4.6 ppb |
| Odebolt Water Supply | 994 | 4.8 ppb |
| Wall Lake Water Supply | 780 | 2.3 ppb |
| Schaller Water Supply | 729 | 0.7 ppb |
| Early Municipal Water Supply | 587 | 1.8 ppb |
| Auburn Water Supply | 265 | 2.4 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Manning, 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 West Central Rwa-Boyer System 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. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.