EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

San Diego, California

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems34active CWS · pop. 2,500+
Population served3,483,719reported total; may overlap
Current violation flag2.9%1 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving San Diego

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
San Diego, City OfCA37100201,385,379Surface waterNo current violation flagged
Helix Water DistrictCA3710010277,668Surface waterNo current violation flagged
Otay Water DistrictCA3710034238,008Surface water purchasedNo current violation flagged
Sweetwater AuthorityCA3710025191,282Surface waterNo current violation flagged
Oceanside, City OfCA3710014171,483Surface water purchasedNo current violation flagged
Escondido, City OfCA3710006137,044Surface waterNo current violation flagged
Vista Irrigation DistrictCA3710027132,430Surface waterNo current violation flagged
Vallecitos WdCA3710002113,500Surface water purchasedCurrent monitoring/reporting flag
Cal-Am Water CoronadoCA3710001106,000Surface water purchasedNo current violation flagged
Carlsbad MwdCA371000595,158Surface water purchasedNo current violation flagged
Padre Dam MwdCA371003793,980Surface water purchasedNo current violation flagged
Olivenhain MwdCA371002986,458Surface water purchasedNo current violation flagged
Poway, City OfCA371001549,888Surface waterNo current violation flagged
Camp Pendleton (South)CA371070242,219Ground waterNo current violation flagged
San Dieguito WdCA371002140,405Surface water purchasedNo current violation flagged
Ramona Municipal WdCA371001937,047Surface water purchasedNo current violation flagged
Nas North Island & Nab CoronadoCA371075036,990Surface water purchasedNo current violation flagged
Lakeside WdCA371001335,500Surface water purchasedNo current violation flagged
Fallbrook PudCA371000835,237Surface water purchasedNo current violation flagged
Rincon Del Diablo Mwd (Id-1)CA371001830,757Surface water purchasedNo current violation flagged
Valley Center MwdCA371002629,938Surface water purchasedNo current violation flagged
Rainbow Municipal WdCA371001623,536Surface water purchasedNo current violation flagged
Santa Fe I.D.CA371002321,578Surface waterNo current violation flagged
Palomar Christian Conference CenterCA370198213,050Ground waterNo current violation flagged
Indian Hills CampCA370147613,032Ground waterNo current violation flagged
Camp Pendleton (North)CA371070012,651Ground waterNo current violation flagged
Lake Henshaw Resort Inc.CA37009009,913Ground waterNo current violation flagged
Palomar ObservatoryCA37022364,416Ground waterNo current violation flagged
Del Mar, City OfCA37100043,919Surface water purchasedNo current violation flagged
Borrego WdCA37100363,429Ground waterNo current violation flagged
Rincon Del Diablo Mwd (Id-A)CA37100443,275Surface water purchasedNo current violation flagged
Naval Medical Center San DiegoCA37107102,981Surface water purchasedNo current violation flagged
Cuyamaca Water DistrictCA37000742,923Ground waterNo current violation flagged
Pine Valley Mutual WcCA37100392,645Ground waterNo current violation flagged

02 / SOURCE MIX

Surface water7 systems · 2,195,269 served
Surface water purchased18 systems · 1,184,172 served
Ground water9 systems · 104,278 served
How to read the population total

It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.