Velarion Records
Follow this permit Velarion Records emails you this permit’s record, cited to the public filing, and tells you when the register changes it. Free.
We’ll email you a link to confirm. The continuous daily watch on every change is the paid alert. Unsubscribe any time.
Also free: The Pay Desk, the weekly executive pay briefing.

Clean Water Act discharge permit · NPDES WAR301976

MYSTIC LAKE, Sammamish, WA: NPDES WAR301976 discharge permit, effluent exceedances, inspections, penalties

MYSTIC LAKE, held by Mystic Lake, holds NPDES permit WAR301976. EPA’s file records it issued December 1, 2010 and expiring December 31, 2015.

MYSTIC LAKE, Sammamish, Washington: Coverage under a general permit WAR301976, held by Mystic Lake; Construction stormwater; Administratively continued (past its expiration date and still in force until reissued); issued December 1, 2010, term to December 31, 2015, by State.

  • pH: 2 limits, 68 violations of any kind, 0 effluent exceedances.
  • Turbidity: 1 limit, 34 violations of any kind, 0 effluent exceedances.

Washington holds 4,744 Construction stormwater coverages of this permit type in EPA’s file; 112 were issued before WAR301976.

Coverages issued nearest WAR301976

MYSTIC LAKE among its neighbors

EPA’s permit file holds 92 discharge permits in the Lake Sammamish-Sammamish River subwatershed (HUC 171100120202), WAR301976 among them. Its county holds 1,319, 8 of them major permits; WAR301976 is a minor permit.

Other permits in the Lake Sammamish-Sammamish River subwatershed (HUC 171100120202)

  • 16TH SAMMAMISH, Redmond: WAR301975, minor permit, permit term to December 31, 2015
  • 223RD PROPERTY, Sammamish: WAR302765, minor permit, permit term to December 31, 2015
  • 7TH AT GILMAN, Issaquah: WAR301859, minor permit, permit term to December 31, 2015
  • AIRFIELD TOWNHOMES, Bellevue: WAR313837, minor permit, permit term to December 31, 2025
  • BAKER SHORT PLAT, Sammamish: WAR313090, minor permit, permit term to December 31, 2025
  • BARRINGTON, Sammamish: WAR302858, minor permit, permit term to December 31, 2015
  • BEAVER LAKE - LAKE TREATMENT, Unspecified: WAG994287, minor permit, permit term to March 21, 2026
  • BENHAM RIDGE, Sammamish: WAR126647, minor permit, permit term to December 31, 2015
  • BIG PICTURE SCHOOL, Bellevue: WAR314125, minor permit, permit term to December 31, 2025
  • BIG ROCK PARK, Sammamish: WAR303100, minor permit, permit term to December 31, 2015

Identity

Facility as filedMYSTIC LAKE
Permittee as filedMystic Lake
NPDES IDWAR301976
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedDecember 1, 2010
Expiration dateDecember 31, 2015
Issuing agencyState
AddressSammamish, WA 98074
SubwatershedLake Sammamish-Sammamish River (HUC 171100120202)

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
pH2680
Turbidity1340

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES WAR301976.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES WAR301976.

Inspections

EPA’s inspection file holds no inspection for NPDES WAR301976.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES WAR301976.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, WAR301976.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers NPDES permit WAR301976 for MYSTIC LAKE in Sammamish, WA, held by Mystic Lake, a minor discharger under coverage of a general permit for construction stormwater, with administrative continuation past its December 31, 2015 expiration. The page lists 2 pollutants on file, 2 under a numeric limit, 2 with a violation of any kind, and 0 with an effluent exceedance, in the subwatershed Lake Sammamish-Sammamish River (HUC 171100120202).