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MENLO COLLEGE

California — Community Water System — PWSID: CA4100517

System Information

PWSIDCA4100517
System NameMENLO COLLEGE
System TypeCommunity Water System
Water SourceGround Water
Activity StatusNon-Inventory
Owner TypePrivate
EPA Region09
Serves SchoolYes
WholesalerNo
First ReportedMar 22, 1979
Last ReportedNov 17, 2025

Location & Contact

StateCalifornia
CityATHERTON
ZIP Code94027
Address1000 El Camino Real
OrganizationTALBOT, BOB
Phone650-543-3714

Population & Service

Population Served850
Service Connections15

Drinking Water Violations (73)

This water system has 73 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Jul 1, 2007 Sep 30, 2007 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2007 Sep 30, 2007 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2005 — Lead and Copper Rule MR No No — TT — Archived Aug 3, 2015 Lead and Copper Rule
Jan 1, 2004 Dec 31, 2004 Glyphosate MR No Yes — 0.7 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 LASSO MR No Yes — — — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Xylenes, Total MR No Yes — 10 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 2,3,7,8-TCDD MR No Yes — 0.00000003 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Selenium MR No Yes — 0.05 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2004 Dec 31, 2004 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 ETHYLENE DIBROMIDE MR No Yes — 0.00005 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Arsenic MR No Yes — 0.010 mg/L — Archived Dec 31, 2004 Arsenic Rule
Jan 1, 2004 Dec 31, 2004 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Carbofuran MR No Yes — 0.04 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Dinoseb MR No Yes — 0.007 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Combined Uranium MR No Yes — 30 ug/L — Archived Dec 31, 2004 Radionuclides and Revised Rad Rule
Jan 1, 2004 Dec 31, 2004 2,4-D MR No Yes — 0.07 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Antimony, Total MR No Yes — 0.006 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2004 Dec 31, 2004 CHLOROBENZENE MR No Yes — 0.1 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Methoxychlor MR No Yes — 0.04 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Tetrachloroethylene MR No Yes — 0.005 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Pentachlorophenol MR No Yes — 0.001 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Endrin MR No Yes — 0.002 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Benzene MR No Yes — 0.005 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Dalapon MR No Yes — 0.2 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Ethylbenzene MR No Yes — 0.7 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Toxaphene MR No Yes — 0.003 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Diquat MR No Yes — 0.02 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 2,4,5-TP MR No Yes — 0.05 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Styrene MR No Yes — 0.1 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Trichloroethylene MR No Yes — 0.005 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Vinyl chloride MR No Yes — 0.002 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,2-DIBROMO-3-CHLOROPROPANE MR No Yes — 0.0002 mg/L — Archived Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Toluene MR No Yes — 1 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Carbon tetrachloride MR No Yes — 0.005 mg/L — Archived Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Mercury MR No Yes — 0.002 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2004 Dec 31, 2004 Thallium, Total MR No Yes — 0.002 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2004 Dec 31, 2004 Chromium MR No Yes — 0.1 mg/L — Archived Dec 31, 2004 Inorganic Chemicals
Jan 1, 2004 Dec 31, 2004 Cadmium MR No Yes — 0.005 mg/L — Archived Dec 31, 2004 Inorganic Chemicals

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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