Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MA2153000
PWS Name	LEOMINSTER WATER DIVISION
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	Yes
Population Served	41683
County Served	Worcester

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
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	50	Returned to Compliance	01-OCT-2018	31-DEC-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	49	Returned to Compliance	01-JUL-2018	30-SEP-2018	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	48	Returned to Compliance	01-MAR-2017	31-MAR-2017	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	47	Returned to Compliance	01-JUL-2012	31-JUL-2012	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	46	Returned to Compliance	01-AUG-2008	31-AUG-2008	Yes
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	45	Returned to Compliance	01-JUL-2008	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	44	Known	01-JUL-2007	30-SEP-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	43	Known	01-APR-2007	30-JUN-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	42	Known	01-JAN-2007	31-MAR-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	41	Returned to Compliance	01-OCT-2006	31-DEC-2006	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	39	Returned to Compliance	11-DEC-2005	-	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	5	Returned to Compliance	01-DEC-2005	31-DEC-2005	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	38	Returned to Compliance	11-NOV-2005	-	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	4	Returned to Compliance	01-NOV-2005	30-NOV-2005	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2	Returned to Compliance	01-OCT-2005	31-OCT-2005	Yes
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	3	Returned to Compliance	01-OCT-2005	31-OCT-2005	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	24	Returned to Compliance	01-OCT-2005	31-OCT-2005	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	23	Returned to Compliance	01-SEP-2005	30-SEP-2005	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	6	Returned to Compliance	01-SEP-2005	30-SEP-2005	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	1	Returned to Compliance	01-SEP-2005	30-SEP-2005	Yes
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	14	Returned to Compliance	01-AUG-2005	31-AUG-2005	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	22	Returned to Compliance	01-AUG-2005	31-AUG-2005	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	21	Returned to Compliance	01-JUL-2005	31-JUL-2005	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	13	Returned to Compliance	01-JUL-2005	31-JUL-2005	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	20	Returned to Compliance	01-JUN-2005	30-JUN-2005	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	12	Returned to Compliance	01-JUN-2005	30-JUN-2005	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	19	Returned to Compliance	01-MAY-2005	31-MAY-2005	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	11	Returned to Compliance	01-MAY-2005	31-MAY-2005	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	10	Returned to Compliance	01-APR-2005	30-APR-2005	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	05V0065	Returned to Compliance	01-APR-2005	30-APR-2005	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	05V0064	Returned to Compliance	01-MAR-2005	31-MAR-2005	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	9	Returned to Compliance	01-MAR-2005	31-MAR-2005	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	8	Returned to Compliance	01-FEB-2005	28-FEB-2005	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	05V0063	Returned to Compliance	01-FEB-2005	28-FEB-2005	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	05V0062	Returned to Compliance	01-JAN-2005	31-JAN-2005	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	7	Returned to Compliance	01-JAN-2005	31-JAN-2005	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	36	Returned to Compliance	01-DEC-2004	31-DEC-2004	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	35	Returned to Compliance	01-NOV-2004	30-NOV-2004	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	34	Returned to Compliance	01-OCT-2004	31-OCT-2004	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	33	Returned to Compliance	01-SEP-2004	30-SEP-2004	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	32	Returned to Compliance	01-AUG-2004	31-AUG-2004	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	31	Returned to Compliance	01-JUL-2004	31-JUL-2004	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	30	Returned to Compliance	01-JUN-2004	30-JUN-2004	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	29	Returned to Compliance	01-MAY-2004	31-MAY-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	05V0040	Returned to Compliance	01-APR-2004	30-JUN-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	05V0039	Returned to Compliance	01-APR-2004	30-JUN-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	05V0061	Returned to Compliance	01-APR-2004	30-JUN-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	05V0060	Returned to Compliance	01-APR-2004	30-JUN-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	05V0059	Returned to Compliance	01-APR-2004	30-JUN-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	05V0058	Returned to Compliance	01-APR-2004	30-JUN-2004	No

1 - 50 of 137

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
68	50	SFJ	State Formal Notice of Violation issued	08-MAY-2019	State	HAA5 MCL DBP2, DBP3 Q4 2018; 6/4/2019 MTG TO DISCUSS CAP PROGRESS
70	49	SOX	State Compliance achieved	08-APR-2019	State	HAA5 MCL Q3 2018
64	48	SOX	State Compliance achieved	25-APR-2017	State	M&R SWTR VIOLATION 3/27/17 - IFE TURBIDITY ANALYZER REPAIRED & FILTER RETURNED TO SERVICE 3/28/17
59	47	SOX	State Compliance achieved	15-SEP-2012	State	TCR MONTHLY MAX. (MCL) FOR JULY 2012
54	46	SOX	State Compliance achieved	30-SEP-2008	State	NON & RTC-CE-08-5D104
52	45	SOX	State Compliance achieved	05-AUG-2008	State	FAILURE TO SUBMIT 2007 CCR CERT. FORM - RETURNED TO COMPLIANCE
50	44	SFL	State Administrative/Compliance Order without penalty issued	30-NOV-2007	State	THM MCL - RAA = 83 PPB (QTR. 3-2007)
49	43	SFL	State Administrative/Compliance Order without penalty issued	09-AUG-2007	State	TTHM MCL FOR 13 DBPR SITES - RAA = 91 PPB (QUARTER 2, 2007)
48	42	SFL	State Administrative/Compliance Order without penalty issued	25-APR-2007	State	THM MCL RAA = 88PPB (JAN-2007 THRU MAR-2007) 2ND VIOLATION
47	41	SOX	State Compliance achieved	12-FEB-2007	State	MET ALL REQUIREMENTS OF NON FOR THM MCL (Q4-2006)
43	1	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	2	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	3	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	4	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	5	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	6	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	7	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	8	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	9	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	10	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	11	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	12	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	13	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	14	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	19	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	20	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	21	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	22	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	23	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	24	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	25	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	26	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	27	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	28	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	29	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	30	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	31	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	32	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	33	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	34	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	35	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	36	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	37	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	38	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	39	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	05V0062	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	05V0063	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	05V0064	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
43	05V0065	SOX	State Compliance achieved	18-JUL-2006	State	PUBLIC NOTICE CERT 4/12/06; ACO EXECUTED 7/18/06
45	98V0001	SOX	State Compliance achieved	30-JUN-2006	State	COMPLIED WITH ACO-SWTR & CORROSION CONTROL

1 - 50 of 137

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WACHUSETT RESERVOIR (MWRA)	40	Yes	Consecutive Connection	Surface water	Emergency	Inactive
S.E. WELL #110, S.E. CORNER	5	Yes	Well	Ground water	Permanent	Active
S.E. WELL #160, S.E. CORNER	14	Yes	Well	Ground water	Permanent	Active
S.E. WELL #120, S.E. CORNER	12	Yes	Well	Ground water	Permanent	Active
WASS MEADOW WELL	1	Yes	Well	Ground water	Other	Active
WACHUSETT RESERVOIR	48	Yes	Intake	Surface water	Emergency	Active
HAYNES RESERVOIR	10	Yes	Intake	Surface water	Permanent	Active
MORSE RESERVOIR	11	Yes	Intake	Surface water	Permanent	Active
FALL BROOK RESERVOIR	2	Yes	Intake	Surface water	Permanent	Active
ROCKY POND	27	Yes	Intake	Surface water	Permanent	Active
SIMONDS POND	4	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTING RESERVOIR	6	Yes	Intake	Surface water	Permanent	Active
NOTOWN RESERVOIR	8	Yes	Intake	Surface water	Permanent	Active
GOODFELLOW POND	9	Yes	Intake	Surface water	Permanent	Active
JUNGLE ROAD (S.E.) PUMP STATION	18	No	Pump Facility	-	-	Active
JYTEK DRIVE BOOSTER STATION	19	No	Pump Facility	-	-	Active
POND STREET BOOSTER MIXING STATION	20	No	Pump Facility	-	-	Active
WACHUSETT RESERVOIR PUMP STATION	21	No	Pump Facility	-	-	Active
SUNRISE AVENUE BOOSTER STATION	22	No	Pump Facility	-	-	Active
S.E. WELL #110, S.E. CORNER PUMP	37	No	Pump Facility	-	-	Active
S.E. WELL #120, S.E. CORNER PUMP	38	No	Pump Facility	-	-	Active
S.E. WELL #160, S.E. CORNER PUMP	39	No	Pump Facility	-	-	Active
EXCHANGE ST BOOSTER STATION	44	No	Pump Facility	-	-	Active
HOLLAND WOODS BOOSTER STATION	45	No	Pump Facility	-	-	Active
GRANITE STREET PUMP STATION	17	No	Pump Facility	-	-	Inactive
WASS MEADOW WELL PUMP	36	No	Pump Facility	-	-	Inactive
LEGATE HILL RD. STORAGE TANK	23	No	Storage	-	-	Active
SUNRISE (SMITH HILL) STORAGE TANK	25	No	Storage	-	-	Active
WACHUSETT STREET STORAGE TANK	26	No	Storage	-	-	Active
WEST ST TANK (2MG)	50	No	Storage	-	-	Active
NORTH MONOOSNOCK MT. STORAGE TANK	24	No	Storage	-	-	Inactive
FALL BROOK TREATMENT PLANT	15	No	Treatment Plant	-	-	Active
NOTOWN TREATMENT PLANT	16	No	Treatment Plant	-	-	Active
DISTRIBUTING TREATMENT PLANT	42	No	Treatment Plant	-	-	Active
LEOMINSTERS MWRA TREATMENT PLANT	46	No	Treatment Plant	-	-	Active
SOUTHEAST CORNER WELLS WTP	47	No	Treatment Plant	-	-	Active

1 - 36 of 36

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
FALL BROOK TREATMENT PLANT	15	pH Adjustment, Post	Corrosion control
FALL BROOK TREATMENT PLANT	15	Hypochlorination, Post	Disinfection
FALL BROOK TREATMENT PLANT	15	Activated Carbon, Granular	Organics removal
FALL BROOK TREATMENT PLANT	15	Filtered	Particulate removal
FALL BROOK TREATMENT PLANT	15	Innovative	Manganese removal
FALL BROOK TREATMENT PLANT	15	Rapid Mix	Particulate removal
NOTOWN TREATMENT PLANT	16	Hypochlorination, Post	Disinfection
NOTOWN TREATMENT PLANT	16	pH Adjustment, Post	Corrosion control
NOTOWN TREATMENT PLANT	16	Filtered	Particulate removal
NOTOWN TREATMENT PLANT	16	Activated Carbon, Granular	Organics removal
DISTRIBUTING TREATMENT PLANT	42	pH Adjustment	Corrosion control
DISTRIBUTING TREATMENT PLANT	42	Activated Carbon, Granular	Organics removal
DISTRIBUTING TREATMENT PLANT	42	Filtered	Particulate removal
DISTRIBUTING TREATMENT PLANT	42	Hypochlorination, Post	Disinfection
LEOMINSTERS MWRA TREATMENT PLANT	46	Gaseous Chlorination, Pre	Disinfection
SOUTHEAST CORNER WELLS WTP	47	pH Adjustment	Corrosion control
SOUTHEAST CORNER WELLS WTP	47	4-Log Treatment of Viruses	Disinfection

1 - 17 of 17

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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