Lead Pipe Map

Arizona · population 15,819

Lead pipes in Douglas, AZ

1 lead or galvanized lines to replace

Most of Douglas (population 15,819) gets its water from La Costa Water Users Assoc. That system reported 0 lead and 1 galvanized-requiring-replacement service lines out of 16, with 15 more of unknown material.

6.3% of La Costa Water Users Assoc's service lines are lead or galvanized requiring replacement, higher than the Arizona average (0.1%) and higher than the national average (3.1%).

0Lead
1Galvanized, replace
15Unknown material
0Non-lead

Latest lead test for La Costa Water Users Assoc (Jan 2024–Dec 2026): 1 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.

Compliance record: EPA lists 2 Lead and Copper Rule violations since 2015 for La Costa Water Users Assoc.

Water systems serving Douglas

Water systemLeadGalv.Unknown% lead
La Costa Water Users AssocMain system01156.3%
City of DouglasAlso serves parts of the city006,2690%
Twin Buttes RV, LLCAlso serves parts of the city00640%

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 Douglas

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

Find the official inventory mapLa Costa Water Users Assoc 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 Douglas, AZ have lead pipes?

Yes. La Costa Water Users Assoc, which serves Douglas, reported 0 lead and 1 galvanized-requiring-replacement service lines, plus 15 of unknown material.

Who supplies water to Douglas?

EPA's service area maps place most of Douglas in La Costa Water Users Assoc's service area (PWSID AZ0402041). City of Douglas, Twin Buttes RV, LLC also serve parts of the city or nearby areas.

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

Search your address on La Costa Water Users Assoc'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 Douglas 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 La Costa Water Users Assoc whether your street is scheduled and whether it covers the private side.