PARKER, CO · Douglas County

STONEGATE MD Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Colorado’s official records. Always confirm current status with Colorado before making decisions based on this information.

System facts

System ID (PWSID): CO0118076
System type: Community Water System
Population served: 15,295
Service connections: 4,093
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2020 – September 30, 2020
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2017 – September 30, 2017
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2017 – September 30, 2017
Resolved
Monitoring, Regular
—
Aldicarb
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Tetrachloroethylene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
CHLOROBENZENE
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Benzene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Toluene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Ethylbenzene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Styrene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Nitrate
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Endrin
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
BHC-GAMMA
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Methoxychlor
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Toxaphene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Dalapon
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Diquat
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Endothall
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
OXAMYL
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Simazine
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Picloram
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Dinoseb
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Aldicarb sulfone
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Carbofuran
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
LASSO
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Heptachlor
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Chlordane
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Combined Uranium
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Fluoride
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Arsenic
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Barium
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Cadmium
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Chromium
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Mercury
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Nickel
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Antimony, Total
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Beryllium, Total
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Thallium, Total
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Selenium
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Xylenes, Total
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Vinyl chloride
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Carbon tetrachloride
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Trichloroethylene
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
April 1, 2008 – June 30, 2008
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2006 – September 30, 2006
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Diquat
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Endothall
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Simazine
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Picloram
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
LASSO
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 1996 – May 31, 1996
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2020 – September 30, 2020	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2017 – September 30, 2017	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2017 – September 30, 2017	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Aldicarb	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Tetrachloroethylene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	CHLOROBENZENE	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Benzene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Toluene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Ethylbenzene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Styrene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Nitrate	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Endrin	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	BHC-GAMMA	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Methoxychlor	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Toxaphene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Dalapon	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Diquat	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Endothall	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	OXAMYL	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Simazine	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Picloram	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Dinoseb	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Aldicarb sulfone	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Carbofuran	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	LASSO	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Heptachlor	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Chlordane	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Combined Uranium	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Fluoride	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Arsenic	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Barium	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Cadmium	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Chromium	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Mercury	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Nickel	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Antimony, Total	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Beryllium, Total	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Thallium, Total	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Selenium	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Xylenes, Total	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Vinyl chloride	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Carbon tetrachloride	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Trichloroethylene	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2006 – September 30, 2006	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Diquat	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Endothall	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Simazine	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Picloram	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	LASSO	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Toxaphene	—	Resolved
May 1, 1996 – May 31, 1996	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

November 9, 2021State Compliance achieved2 linked violations
November 4, 2020State Public Notification requested2 linked violations
November 4, 2020State Violation/Reminder Notice2 linked violations
November 22, 2017State Compliance achieved2 linked violations
September 28, 2017State Public Notification requested2 linked violations
September 28, 2017State Violation/Reminder Notice2 linked violations
September 15, 2008State Compliance achieved52 linked violations
August 26, 2008State Compliance achieved12 linked violations
August 21, 2008State Compliance achieved31 linked violations
August 13, 2008State Public Notification requested2 linked violations
August 13, 2008State Public Notification requested2 linked violations
August 13, 2008State Public Notification requested1 linked violation
August 11, 2008State Compliance achieved3 linked violations
July 30, 2008State Public Notification requested34 linked violations
July 30, 2008State Violation/Reminder Notice2 linked violations
July 30, 2008State Violation/Reminder Notice11 linked violations
July 30, 2008State Violation/Reminder Notice21 linked violations
July 30, 2008State Public Notification requested11 linked violations
July 30, 2008State Public Notification requested21 linked violations
February 13, 2008State Violation/Reminder Notice33 linked violations
January 30, 2007State Compliance achieved1 linked violation
December 18, 2006State Violation/Reminder Notice2 linked violations
June 25, 1996State Formal Notice of Violation issued4 linked violations

Contact

PLUMMER, HEIDI

303-858-9909

PARKER, CO 80134