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MAYFIELD RV PARK

Washington — Community Water System — PWSID: WA5311154

System Information

PWSIDWA5311154
System NameMAYFIELD RV PARK
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CitySammamish
ZIP Code98074
Address704 228th Avenue NE #134
OrganizationMAYFIELD RV PARK
Phone—

Population & Service

Population Served165
Service Connections28

Drinking Water Violations (387)

This water system has 387 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, 2023 — Consumer Confidence Rule Other No No — — — Resolved Sep 11, 2023 Consumer Confidence Rule
Jan 1, 2023 Jan 31, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Jan 31, 2023 Revised Total Coliform Rule
Sep 1, 2021 Sep 30, 2021 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2021 Revised Total Coliform Rule
Jul 1, 2020 — Consumer Confidence Rule Other No No — — — Resolved Jun 16, 2021 Consumer Confidence Rule
Jul 1, 2016 — Consumer Confidence Rule Other No No — — — Resolved Sep 21, 2016 Consumer Confidence Rule
Nov 1, 2015 Nov 30, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2015 Total Coliform Rule
Jul 1, 2015 — Consumer Confidence Rule Other No No — — — Resolved Aug 23, 2015 Consumer Confidence Rule
Jan 1, 2015 Dec 31, 2015 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2015 Jan 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2015 Total Coliform Rule
Dec 1, 2013 Dec 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2013 Total Coliform Rule
Sep 1, 2013 Sep 30, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2013 Total Coliform Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved Oct 21, 2013 Consumer Confidence Rule
Jun 1, 2013 Jun 30, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2013 Total Coliform Rule
Jan 1, 2012 — Lead and Copper Rule MR No No — TT — Resolved Jul 30, 2015 Lead and Copper Rule
Jan 1, 2011 Dec 31, 2019 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2019 Nitrate Rule
Jan 1, 2011 Dec 31, 2019 Mercury MR No Yes — 0.002 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Cadmium MR No Yes — 0.005 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2019 Arsenic Rule
Jan 1, 2011 Dec 31, 2019 Fluoride MR No Yes — 4.0 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Nickel MR No Yes — — — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Barium MR No Yes — 2 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Antimony, Total MR No Yes — 0.006 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 CYANIDE MR No Yes — 0.2 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Beryllium, Total MR No Yes — 0.004 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Chromium MR No Yes — 0.1 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2019 Selenium MR No Yes — 0.05 mg/L — Resolved Dec 31, 2019 Inorganic Chemicals
Oct 1, 2006 Dec 31, 2006 Endrin MR No Yes — 0.002 mg/L — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Carbon tetrachloride MR No Yes — 0.005 mg/L — Archived Dec 31, 2006 Volatile Organic Chemicals
Oct 1, 2006 Dec 31, 2006 2,4,5-TP MR No Yes — 0.05 mg/L — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Simazine MR No Yes — 0.004 mg/L — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Archived Dec 31, 2006 Volatile Organic Chemicals
Oct 1, 2006 Dec 31, 2006 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Archived Dec 31, 2006 Volatile Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Aldicarb sulfoxide MR No Yes — — — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Methoxychlor MR No Yes — 0.04 mg/L — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Dinoseb MR No Yes — 0.007 mg/L — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Vinyl chloride MR No Yes — 0.002 mg/L — Archived Dec 31, 2006 Volatile Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Tetrachloroethylene MR No Yes — 0.005 mg/L — Archived Dec 31, 2006 Volatile Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Dalapon MR No Yes — 0.2 mg/L — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Toluene MR No Yes — 1 mg/L — Archived Dec 31, 2006 Volatile Organic Chemicals
Oct 1, 2006 Dec 31, 2006 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Archived Dec 31, 2006 Volatile Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Trichloroethylene MR No Yes — 0.005 mg/L — Archived Dec 31, 2006 Volatile Organic Chemicals
Oct 1, 2006 Dec 31, 2006 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Archived Dec 31, 2006 Volatile Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Aldicarb MR No Yes — — — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 CHLOROBENZENE MR No Yes — 0.1 mg/L — Archived Dec 31, 2006 Volatile Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Picloram MR No Yes — 0.5 mg/L — Archived Dec 31, 2006 Synthetic Organic Chemicals
Oct 1, 2006 Dec 31, 2006 Aldicarb sulfone MR No Yes — — — Archived Dec 31, 2006 Synthetic Organic 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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