Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CT0608011
PWS Name	CTWC - SHORELINE REGION-GUILFORD SYSTEM
PWS Type	Community water system
Owner Type	Private
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	33975
County Served	New Haven

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MR	Monitoring, Regular	Nitrate Rule	Nitrite	104704	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	104703	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	104509	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	100609	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	104609	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	103909	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	103809	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	103709	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	103609	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	103509	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	104109	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	103109	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	102909	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	102809	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	102709	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	102609	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	102509	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	102309	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	102209	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	102109	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	102009	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	101909	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	101809	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	101709	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	101609	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	101509	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	101409	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	101309	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	101209	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	100909	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	100809	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	100709	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	104409	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	79408	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	79308	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	79208	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	79108	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	79008	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	78908	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	78808	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	80508	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	80408	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	80308	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	78708	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	82908	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	82808	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	68508	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	78408	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	73508	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	73208	Returned to Compliance	01-JUL-2007	30-SEP-2007	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
3611	104703	SIA	State Violation/Reminder Notice	03-FEB-2016	State	-
3611	104704	SIA	State Violation/Reminder Notice	03-FEB-2016	State	-
3409	100909	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	101209	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	101309	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	101409	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	101509	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	101609	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	101709	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	101809	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	101909	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	102009	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	102109	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	102209	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	102309	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	102509	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	102609	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	102709	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	102809	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	102909	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	103109	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	103509	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	103609	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	103709	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	103809	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	103909	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	104109	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	104409	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	104509	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	104609	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	100809	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	100609	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3409	100709	SIA	State Violation/Reminder Notice	10-FEB-2009	State	-
3208	83108	SOX	State Compliance achieved	21-AUG-2008	State	results corrected
3208	83208	SOX	State Compliance achieved	21-AUG-2008	State	results corrected
3208	83308	SOX	State Compliance achieved	21-AUG-2008	State	results corrected
3208	83408	SOX	State Compliance achieved	21-AUG-2008	State	results corrected
3208	83508	SOX	State Compliance achieved	21-AUG-2008	State	results corrected
3208	83608	SOX	State Compliance achieved	21-AUG-2008	State	results corrected
3008	62707	SOX	State Compliance achieved	08-APR-2008	State	results received
3008	62807	SOX	State Compliance achieved	08-APR-2008	State	results received
3008	63407	SOX	State Compliance achieved	08-APR-2008	State	results received
3008	63507	SOX	State Compliance achieved	08-APR-2008	State	results received
3008	65007	SOX	State Compliance achieved	08-APR-2008	State	results received
3008	65407	SOX	State Compliance achieved	08-APR-2008	State	results received
3008	65507	SOX	State Compliance achieved	08-APR-2008	State	results received
3008	65607	SOX	State Compliance achieved	08-APR-2008	State	results received
3008	65707	SOX	State Compliance achieved	08-APR-2008	State	results received
3008	65907	SOX	State Compliance achieved	08-APR-2008	State	results received
3008	66007	SOX	State Compliance achieved	08-APR-2008	State	results received

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
INTERCONNECTION - CT0930011 - RWA	49761	Yes	Consecutive Connection	Surface water	Permanent	Active
SAYBROOK WELL 1	27847	Yes	Well	Ground water	Seasonal	Active
HOLBROOK WELL	27846	Yes	Well	Ground water	Seasonal	Active
CLINTON WELL	27675	Yes	Well	Ground water	Seasonal	Active
RETTICH WELL 12	49066	Yes	Well	Ground water	Permanent	Inactive
CLR WELL	27842	Yes	Well	Ground water	Permanent	Inactive
GUILFORD WELL	27841	Yes	Well	Ground water	Permanent	Inactive
FIVE FIELDS WELL 1	27678	Yes	Well	Ground water	Permanent	Inactive
RETTICH WELL 11	27677	Yes	Well	Ground water	Permanent	Inactive
RETTICH WELL 5	27676	Yes	Well	Ground water	Permanent	Inactive
FIVE FIELDS WELL 2	27371	Yes	Well	Ground water	Permanent	Inactive
GUILFORD WELL 1R	63466	Yes	Well	Ground water	Permanent	Active
FIVE FIELDS WELL 2A	47288	Yes	Well	Ground water	Permanent	Active
PINEWOOD WELL 2	27844	Yes	Well	Ground water	Permanent	Active
WEISS WELL	27679	Yes	Well	Ground water	Permanent	Active
WESTBROOK WELL	27848	Yes	Well	Ground water	Emergency	Inactive
PINEWOOD WELL 1	27843	Yes	Well	Ground water	Emergency	Inactive
THISTLE ROCK WELL 2	27360	Yes	Well	Ground water	Emergency	Inactive
THISTLE ROCK WELL 1	27359	Yes	Well	Ground water	Emergency	Inactive
KELSEYTOWN RESERVOIR	32555	Yes	Reservoir	Surface water	Permanent	Active
KILLINGWORTH RESERVOIR	32554	Yes	Reservoir	Surface water	Permanent	Active
KILLINGWORTH RESERVOIR	21239	Yes	Intake	Surface water	Permanent	Active
KELSYTOWN RESERVOIR	21238	Yes	Intake	Surface water	Permanent	Active
INTERCONNECTION CT0261031 TO CT0680011	61731	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	21240	No	Distribution System/Zone	-	-	Active
LONG HILL PUMP STATION	50322	No	Pump Facility	-	-	Active
SAYBROOK PUMP STATION	50324	No	Pump Facility	-	-	Active
KELSEYTOWN PUMP STATION	52057	No	Pump Facility	-	-	Active
MACKENZIE PUMP STATION	52059	No	Pump Facility	-	-	Active
CEDAR CREST PUMP STATION	50320	No	Pump Facility	-	-	Inactive
IRON WORKS PUMP STATION	52061	No	Pump Facility	-	-	Inactive
CLINTON WELL WTP ENTRY POINT	45776	No	Sampling Station	-	-	Active
FIVE FIELDS WELL WTP ENTRY POINT	45777	No	Sampling Station	-	-	Active
GUILFORD WELL WTP ENTRY POINT	45779	No	Sampling Station	-	-	Active
MACKENZIE WTP ENTRY POINT	45782	No	Sampling Station	-	-	Active
SAYBROOK WELL WTP ENTRY POINT	45784	No	Sampling Station	-	-	Active
WEISS WELL WTP ENTRY POINT	45785	No	Sampling Station	-	-	Active
HOLBROOK WELL WTP ENTRY POINT	50316	No	Sampling Station	-	-	Active
PINEWOOD WELL WTP ENTRY POINT	62146	No	Sampling Station	-	-	Active
ENTRY POINT	38585	No	Sampling Station	-	-	Inactive
PINEWOOD WELL WTP ENTRY POINT	45781	No	Sampling Station	-	-	Inactive
RETTICH WELLS WTP ENTRY POINT	45783	No	Sampling Station	-	-	Inactive
WESTBROOK WELL WTP ENTRY POINT	45786	No	Sampling Station	-	-	Inactive
BISHOP (LONG HILL) STORAGE TANK	50326	No	Storage	-	-	Active
OBED HEIGHTS TANK	50330	No	Storage	-	-	Active
SACHEMS HEAD TANK	50332	No	Storage	-	-	Active
MACKENZIE CLEARWELL 1	52049	No	Storage	-	-	Active
MACKENZIE CLEARWELL 2	52051	No	Storage	-	-	Active
PEQUOT TANK	57300	No	Storage	-	-	Active
RIDGE ROAD TANK	61727	No	Storage	-	-	Active

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
MACKENZIE WATER TREATMENT PLANT	36331	Coagulation	Particulate removal
MACKENZIE WATER TREATMENT PLANT	36331	pH Adjustment, Pre	Particulate removal
MACKENZIE WATER TREATMENT PLANT	36331	Filtration, Rapid Sand	Particulate removal
MACKENZIE WATER TREATMENT PLANT	36331	Sedimentation	Particulate removal
MACKENZIE WATER TREATMENT PLANT	36331	Inhibitor, Polyphosphate	Corrosion control
MACKENZIE WATER TREATMENT PLANT	36331	pH Adjustment, Post	Corrosion control
MACKENZIE WATER TREATMENT PLANT	36331	Fluoridation	Other
MACKENZIE WATER TREATMENT PLANT	36331	Flocculation	Particulate removal
MACKENZIE WATER TREATMENT PLANT	36331	Hypochlorination, Pre	Disinfection
MACKENZIE WATER TREATMENT PLANT	36331	Hypochlorination, Post	Disinfection
SAYBROOK WELL TREATMENT PLANT	36332	Inhibitor, Polyphosphate	Corrosion control
SAYBROOK WELL TREATMENT PLANT	36332	pH Adjustment	Corrosion control
SAYBROOK WELL TREATMENT PLANT	36332	Fluoridation	Other
SAYBROOK WELL TREATMENT PLANT	36332	Hypochlorination, Post	Disinfection
WESTBROOK WELL TREATMENT PLANT	36333	Inhibitor, Polyphosphate	Corrosion control
WESTBROOK WELL TREATMENT PLANT	36333	Fluoridation	Other
WESTBROOK WELL TREATMENT PLANT	36333	Aeration, Diffused	Iron removal
WESTBROOK WELL TREATMENT PLANT	36333	pH Adjustment, Post	Corrosion control
WESTBROOK WELL TREATMENT PLANT	36333	Filtration, Greensand	Iron removal
WESTBROOK WELL TREATMENT PLANT	36333	Filtration, Greensand	Manganese removal
WESTBROOK WELL TREATMENT PLANT	36333	Hypochlorination, Pre	Manganese removal
CLINTON WELL TREATMENT PLANT	36334	Inhibitor, Polyphosphate	Corrosion control
CLINTON WELL TREATMENT PLANT	36334	Fluoridation	Other
CLINTON WELL TREATMENT PLANT	36334	Hypochlorination, Pre	Iron removal
CLINTON WELL TREATMENT PLANT	36334	Hypochlorination, Pre	Manganese removal
CLINTON WELL TREATMENT PLANT	36334	pH Adjustment, Post	Corrosion control
CLINTON WELL TREATMENT PLANT	36334	Hypochlorination, Pre	Disinfection
CLINTON WELL TREATMENT PLANT	36334	Filtration, Greensand	Iron removal
CLINTON WELL TREATMENT PLANT	36334	Filtration, Greensand	Manganese removal
RETTICH WELLS TREATMENT PLANT	36335	Inhibitor, Polyphosphate	Corrosion control
RETTICH WELLS TREATMENT PLANT	36335	Hypochlorination, Post	Disinfection
WEISS WELL TREATMENT PLANT	36336	Inhibitor, Polyphosphate	Corrosion control
WEISS WELL TREATMENT PLANT	36336	pH Adjustment	Corrosion control
WEISS WELL TREATMENT PLANT	36336	Fluoridation	Other
WEISS WELL TREATMENT PLANT	36336	Hypochlorination, Post	Disinfection
FIVE FIELDS WELL TREATMENT PLANT	36337	pH Adjustment	Corrosion control
FIVE FIELDS WELL TREATMENT PLANT	36337	Fluoridation	Other
GUILFORD WELL TREATMENT PLANT	36338	Inhibitor, Polyphosphate	Corrosion control
GUILFORD WELL TREATMENT PLANT	36338	Fluoridation	Other
GUILFORD WELL TREATMENT PLANT	36338	pH Adjustment, Post	Corrosion control
GUILFORD WELL TREATMENT PLANT	36338	Hypochlorination, Post	Disinfection
GUILFORD WELL TREATMENT PLANT	36338	Filtration, Greensand	Iron removal
GUILFORD WELL TREATMENT PLANT	36338	Filtration, Greensand	Manganese removal
PINEWOOD WELL TREATMENT PLANT-OLD	36339	pH Adjustment	Corrosion control
PINEWOOD WELL TREATMENT PLANT-OLD	36339	Fluoridation	Other
HOLBROOK WELL TREATMENT PLANT	50318	Hypochlorination, Post	Disinfection
HOLBROOK WELL TREATMENT PLANT	50318	pH Adjustment	Corrosion control
HOLBROOK WELL TREATMENT PLANT	50318	Fluoridation	Other
PINEWOOD WELL TREATMENT PLANT	62148	pH Adjustment	Corrosion control
PINEWOOD WELL TREATMENT PLANT	62148	Fluoridation	Other

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For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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