Lead Pipe Map

Texas · population 3,620

Lead pipes in San Diego, TX

No inventory counts on file

San Diego (population 3,620) is served by San Diego MUD 1, which hasn't reported service line counts to EPA yet. Ask the utility for its lead service line inventory, or check your own pipe.

Latest lead test for San Diego MUD 1 (Jan 2023–Dec 2025): not detected 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 San Diego MUD 1.

Water systems serving San Diego

Water systemLeadGalv.Unknown% lead
San Diego MUD 1Main system000–

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 San Diego

The counts above cover the whole water system. To see whether your line is lead, look up your address on San Diego MUD 1's official inventory. Utilities had to make these public by October 16, 2024.

Find the official inventory mapSan Diego MUD 1 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 San Diego, TX have lead pipes?

San Diego's main water system, San Diego MUD 1, hasn't reported service line counts to EPA. Ask the utility for its inventory.

Who supplies water to San Diego?

EPA's service area maps place most of San Diego in San Diego MUD 1's service area (PWSID TX0660003).

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

Search your address on San Diego MUD 1'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 San Diego 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 San Diego MUD 1 whether your street is scheduled and whether it covers the private side.