EPA data as of Oct 2026 · page updated 2026-10-30

San Simeon CSD

San Simeon CSD (EPA ID CA4000568) in San Simeon, CA supplies groundwater (wells) to about 462 people: 3 violations since 2016, latest lead result 45 ppb, PFAS not tested.

Service area

EPA service-area boundary (state-supplied or EPA-modeled)
Water utility service area PFOA/PFOS ≥ 4 ppt Lead > 15 ppb 5+ violations Superfund site (active) proposed cleaned up Circles: other water systems flagged nearby; size = people served. Tap any symbol for details.

System facts

People served462
Connections206
Sourcegroundwater (wells)
WholesalerNo

Health-based violations

Contaminant or ruleHealth-based violations since 2016
Surface Water Treatment Rule3

A health-based violation means a contaminant exceeded its legal limit (MCL) or a required treatment technique was not met, as reported by the state to EPA’s SDWIS. All are listed as resolved or archived; the latest began Feb 2024.

Lead

Jan 202345 ppb
Jan 202011 ppb
Jan 201710.1 ppb
Jan 20140 ppb
Jan 20130 ppb
Jan 20110 ppb
Jan 20041.8 ppb
Jan 20012.9 ppb

90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.

PFAS

This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5).

What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.

Questions

Has San Simeon CSD had drinking water violations?

Health-based violations since 2016: Surface Water Treatment Rule. All are listed as resolved.

What is the lead level in San Simeon CSD water?

The latest 90th-percentile lead result (Jan 2023) was 45 ppb. EPA’s action level is 15 ppb (10 ppb from 2027).

Does San Simeon CSD have PFAS in its water?

This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5 covers systems serving over 3,300 people and a sample of smaller ones).