County · Iowa
Linn County, Iowa: drinking water records
This overview covers 22 ZIP codes and 40 community water systems in Linn County. It also stands in for 2 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Cedar Rapids Water Department IA5715093 | 142,364 | 240 | 0 | 0 | 1.6 ppb |
| Marion Municipal Water Dept IA5751035 | 41,623 | 240 | 0 | 0 | 8.3 ppb |
| Hiawatha Water Dept IA5735045 | 7,183 | 300 | 3 | 0 | 0 ppb |
| Mount Vernon Water Supply IA5758021 | 4,527 | 120 | 0 | 0 | 1 ppb |
| Vern Acres (Oliphant Addition) IA5784303 | 150 | 0 | 0 | 1 | 5 ppb |
| Glenn Oaks Addition IA5784313 | 58 | 0 | 0 | 1 | 0 ppb |
| Chestnut Ridge IA5784312 | 33 | 0 | 0 | 1 | 1 ppb |
| Fairfax Water Supply IA5731032 | 2,828 | 0 | 0 | 0 | 2 ppb |
| Center Point Water Supply IA5718006 | 2,579 | 0 | 0 | 0 | 0 ppb |
| Ely Water Supply IA5728018 | 2,328 | 0 | 0 | 0 | 4 ppb |
| Lisbon Water Supply IA5748086 | 2,233 | 0 | 0 | 0 | 1.7 ppb |
| Palo Water Supply IA5765101 | 1,407 | 0 | 0 | 0 | 1.6 ppb |
| Central City Water Supply IA5720010 | 1,264 | 0 | 0 | 0 | 3 ppb |
| Springville Water Supply IA5782087 | 1,164 | 0 | 0 | 0 | 0 ppb |
| Eagle Ridge IA5751602 | 1,005 | 0 | 0 | 0 | 1.3 ppb |
| Marion Village IA5751601 | 850 | 0 | 0 | 0 | 1.9 ppb |
| Coggon Water Department IA5722053 | 701 | 0 | 0 | 0 | 5.8 ppb |
| Walker Water Works IA5792059 | 688 | 0 | 0 | 0 | 5 ppb |
| Alburnett Water Supply IA5704012 | 675 | 0 | 0 | 0 | 4 ppb |
| Cedar Terrace MHC IA5700600 | 600 | 0 | 0 | 0 | 0 ppb |
| Glenbrook Cove Area IA5751040 | 233 | 0 | 0 | 0 | 3.7 ppb |
| Country Manor Estates IA5784307 | 228 | 0 | 0 | 0 | 0 ppb |
| Gaddis Estates HOA IA5731302 | 220 | 0 | 0 | 0 | 3 ppb |
| Prairieburg Muni. Water Supply IA5772054 | 160 | 0 | 0 | 0 | 0 ppb |
| Oak Valley IA5784311 | 100 | 0 | 0 | 0 | 2 ppb |
ZIP reports in Linn County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 52341, 52344.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.