Lead Pipe Map

Colorado · population 9,906

Lead pipes in Alamosa, CO

1,686 lines still unidentified

Most of Alamosa (population 9,906) gets its water from City of Alamosa. It reported no confirmed lead service lines, but 1,686 of 3,463 lines are still listed as unknown material, so lead hasn't been ruled out.

0% of City of Alamosa's service lines are lead or galvanized requiring replacement, lower than the Colorado average (1.2%) and lower than the national average (3.1%).

0Lead
0Galvanized, replace
1,686Unknown material
1,777Non-lead

Latest lead test for City of Alamosa (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 City of Alamosa.

Water systems serving Alamosa

Water systemLeadGalv.Unknown% lead
City of AlamosaMain system001,6860%
East AlamosaServes nearby areas001760%

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 Alamosa

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

Find the official inventory mapCity of Alamosa 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 Alamosa, CO have lead pipes?

None are confirmed, but City of Alamosa still lists 1,686 service lines as unknown material.

Who supplies water to Alamosa?

EPA's service area maps place most of Alamosa in City of Alamosa's service area (PWSID CO0102100). East Alamosa also serves parts of the city or nearby areas.

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

Search your address on City of Alamosa'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 Alamosa 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 City of Alamosa whether your street is scheduled and whether it covers the private side.