Lead Pipe Map

California · 7 community water systems

Lead pipes in Marin County, CA

7 community water systems serving Marin County reported 0 lead and 1 galvanized-requiring-replacement service lines, plus 278 of unknown material. The most are in Nicasio Valley Ranch Mutual.

<0.1% of these systems' lines are lead or galvanized requiring replacement, lower than the California average (0.1%) and lower than the national average (3.1%).

0Lead
1Galvanized, replace
278Unknown
85,879Non-lead

Water systems serving Marin County

Water systemLeadGalv.Unknown% leadPeople
Nicasio Valley Ranch MutualMarin County0107.7%36
Coast Springs - Cal. Water Service (Puc)Marin County002530%445
Bolinas Community PUDMarin County00250%1,937
Marin Municipal Water DistrictMarin County0000%188,116
North Marin Water DistrictMarin County0000%61,691
North Marin WD - PT. ReyesMarin County0000%1,841
Inverness Public Utility DistMarin County0000%1,445

Systems that also serve other counties are counted in full. Your water bill names your utility.

What to do if your line is lead or unknown

  1. Check the pipe where water enters your home.
  2. Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking.
  3. Test your water, often free through the utility.
  4. Ask your utility about free or discounted replacement; most lines must be replaced by December 31, 2037.

Check another water system

Questions

Does Marin County have lead pipes?

Yes. Water systems serving Marin County reported 0 lead and 1 galvanized-requiring-replacement service lines, plus 278 of unknown material.

Which Marin County water systems have the most lead lines?

Nicasio Valley Ranch Mutual (1).

How do I check my home in Marin County?

Find the water system named on your water bill in the table above, open its page and use its address-level inventory. You can also scratch-test the pipe where it enters your home.