Lead Pipe Map

Iowa · population 58,987

Lead pipes in Dubuque, IA

23,954 lines still unidentified

Most of Dubuque (population 58,987) gets its water from Dubuque Water Works. It reported no confirmed lead service lines, but 23,954 of 23,955 lines are still listed as unknown material, so lead hasn't been ruled out.

0% of Dubuque Water Works's service lines are lead or galvanized requiring replacement, lower than the Iowa average (5.6%) and lower than the national average (3.1%).

0Lead
0Galvanized, replace
23,954Unknown material
1Non-lead

Latest lead test for Dubuque Water Works (Jan 2021–Dec 2023): 5 ppb 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 Dubuque Water Works.

Water systems serving Dubuque

Water systemLeadGalv.Unknown% lead
Dubuque Water WorksMain system0023,9540%
Asbury Municipal Water SystemServes nearby areas0000%

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 Dubuque

The counts above cover the whole water system. To see whether your line is lead, look up your address on Dubuque Water Works's official inventory. Utilities had to make these public by October 16, 2024.

Find the official inventory mapDubuque Water Works details

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.

Pitcher filtersCheapest start. Pick one certified to NSF/ANSI 53 for lead, such as Brita Elite, PUR Plus or ZeroWater.See pitchers Faucet-mount filtersFilters straight from the tap. Look for NSF/ANSI 53 lead reduction on the box.See faucet filters Under-sink systemsBest for families. Carbon block (NSF 53) or reverse osmosis (NSF 58) units rated for lead.See under-sink

Choosing a lead-certified filter · Testing your water · Replacement cost

Nearby cities

Check another water system

Questions

Does Dubuque, IA have lead pipes?

None are confirmed, but Dubuque Water Works still lists 23,954 service lines as unknown material.

Who supplies water to Dubuque?

EPA's service area maps place most of Dubuque in Dubuque Water Works's service area (PWSID IA3126052). Asbury Municipal Water System also serves parts of the city or nearby areas.

How do I check whether my Dubuque home has a lead service line?

Search your address on Dubuque Water Works'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 Dubuque 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 Dubuque Water Works whether your street is scheduled and whether it covers the private side.