Iowa · population 15,396
Lead pipes in Norwalk, IA
1,392 lines still unidentified
Most of Norwalk (population 15,396) gets its water from Norwalk Water Supply. It reported no confirmed lead service lines, but 1,392 of 5,472 lines are still listed as unknown material, so lead hasn't been ruled out.
0% of Norwalk Water Supply's service lines are lead or galvanized requiring replacement, lower than the Iowa average (5.6%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0%
- Unknown 25%
- Non-lead 75%
Latest lead test for Norwalk Water Supply (Jan 2023–Dec 2025): not detected at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for Norwalk Water Supply.
Water systems serving Norwalk
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Norwalk Water SupplyMain system | 0 | 0 | 1,392 | 0% |
| Des Moines Water WorksServes nearby areas | 8,114 | 10 | 45,950 | 9.0% |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Norwalk
The counts above cover the whole water system. To see whether your line is lead, look up your address on Norwalk Water Supply's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- West Des Moines59 lead + galv. lines
- Windsor Heights1 unknown
- Clive45 lead + galv. lines
- Indianola9 lead + galv. lines
- Carlisle11 unknown
- Urbandale1 unknown
- Waukee110 unknown
- Pleasant Hill8,124 lead + galv. lines
Check another water system
Questions
Does Norwalk, IA have lead pipes?
None are confirmed, but Norwalk Water Supply still lists 1,392 service lines as unknown material.
Who supplies water to Norwalk?
EPA's service area maps place most of Norwalk in Norwalk Water Supply's service area (PWSID IA9164078). Des Moines Water Works also serves parts of the city or nearby areas.
How do I check whether my Norwalk home has a lead service line?
Search your address on Norwalk Water Supply's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Norwalk be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Norwalk Water Supply whether your street is scheduled and whether it covers the private side.