Lead Pipe Map

Wisconsin · population 3,655

Lead pipes in Merton, WI

10 lead or galvanized lines to replace

Most of Merton (population 3,655) gets its water from Hartland Waterworks. That system reported 10 lead and 0 galvanized-requiring-replacement service lines out of 3,158, with 0 more of unknown material.

0.3% of Hartland Waterworks's service lines are lead or galvanized requiring replacement, lower than the Wisconsin average (11%) and lower than the national average (3.1%).

10Lead
0Galvanized, replace
0Unknown material
3,148Non-lead

Latest lead test for Hartland Waterworks (Jul 2025–Dec 2025): 4.2 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.

Compliance record: EPA lists 1 Lead and Copper Rule violation since 2015 for Hartland Waterworks.

Water systems serving Merton

Water systemLeadGalv.Unknown% lead
Hartland WaterworksMain system10000.3%

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 Merton

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

Find the official inventory mapHartland Waterworks 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 Merton, WI have lead pipes?

Yes. Hartland Waterworks, which serves Merton, reported 10 lead and 0 galvanized-requiring-replacement service lines, plus 0 of unknown material.

Who supplies water to Merton?

EPA's service area maps place most of Merton in Hartland Waterworks's service area (PWSID WI2680205).

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

Search your address on Hartland Waterworks'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 Merton 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 Hartland Waterworks whether your street is scheduled and whether it covers the private side.