STATE OF CONNECTICUT DEPARTMENT OF PUBLIC HEALTH

DRINKING WATER DIVISION

REGULATIONS OF CONNECTICUT STATE AGENCIES

SECTION 19-13-B102

STANDARDS FOR QUALITY PUBLIC DRINKING WATER

Current with materials published in Connecticut Law Journal through 11/06/2007 State of Connecticut Regulations of Connecticut State Agencies

INDEX

Section 19-13-B102 Standards for Quality of Public Drinking Water a) Definitions ...... 1-8 b) Watershed Survey ...... 8 c) Standards for Quality of Untreated Water Prior to Treatment ...... 8-9 (1) Bacteriological ...... 8 (2) Physical ...... 8 (3) Inorganic Chemicals ...... 9 (4) Pesticides ...... 9 d) Facility Location ...... 9 e) Water Ready for Consumption ...... 9-60 (1) Physical Tests ...... 9-10 (2) Inorganic Chemicals ...... 10-11 (3) Pesticides, Herbicides, PCB ...... 11-12 (4) Organic Chemicals ...... 12-13 (5) Radioactivity ...... 13-20 (6) Total Coliforms ...... 20-21 (7) Monitoring requirements ...... 21-36 (A) Community Water Systems – Total Coliform and Physical Parameters ...... 21-22 (B) Non-community Water Systems – Total Coliform ad Physical Parameters ... 22 (C) Inorganic Chemicals, Organic Chemicals, Pesticides, Herbicides and PCB . 23-26 (D) Sampling sites ...... 26-27 (E) Sanitary Survey’s ...... 27-28 (F) Invalidation of Total Coliform –Positive Samples ...... 28 (G) Repeat Monitoring / Additional Routine Samples ...... 28-30 (H) Additional Monitoring for Unfiltered Surface Water Systems ...... 30 (I) Fecal Coliform and E.coli Requirements ...... 30 (J) Heterotrophic Bacteria Interference ...... 30-31 (K) Sampling Protocol ...... 31 (L) Testing for Floride ...... 31 (M) Chlorine Residual ...... 31-32 (N) pH and Phosphate Monitoring ...... 32 (O) Consecutive Water Systems ...... 32 (P) Confirmation Samples ...... 32 (Q) Compliance ...... 32-33 (R) Monitoring Requirements for Systems That Do Not Provide Filtration Treatment ...... 33-34 Current with materials published in Connecticut Law Journal through 11/06/2007

1 (S) Monitoring Requirements for Systems Using Filtration Treatment ...... 34-36 (8) Monitoring requirements for lead and copper in tap water ...... 36-44 (A) Sample Site Location ...... 36-37 (B) Sample Collection Methods ...... 37-38 (C) Number of Samples ...... 38-39 (D) Initial Tap Sampling ...... 39 (E) Monitoring after installation of corrosion control and source treatment...... 39 (F) Monitoring after Department specified water quality parameters for OCC.... 39-40 (G) Reduced Monitoring………………………………………………………… 40-43 (H) Additional Monitoring……………………………………………………… 43 (I) Invalidation of lead and copper tap results………………………………… 43-44 (9) Monitoring Requirements for Water Quality Parameters ...... 44-48 (A) General Requirements ...... 44 (B) Initial Sampling ...... 44-45 (C) Monitoring After Installation of Corrosion Control ...... 45 (D) Monitoring after Department specified water quality parameters for OCC.... 45-46 (E) Reduced Monitoring ...... 46-47 (F) Additional Monitoring by Systems (Summary of Monitoring for Water Quality Parameters) ...... 47-48 (10) Monitoring Requirements for Lead and Copper in Source Water ...... …...... 48-50 (A) Sample Location, Collection Methods, and Number of Samples ...... 48-49 (B) Monitoring Frequency After Systems Exceed Tap Water Action Level .... 49 (C) Monitoring Frequency After Installation of Source Water Treatment ...... 49 (D) Monitoring Frequency After the Department Specifies Maximum Permissible Levels ...... 49-50 (11) Monitoring Requirements for Disinfection byproducts, residuals, and precursors… 50-59 (A) Compliance Dates and Applicability……………………………………….. 50 (B) General Requirements………………………………………………………. 50-51 (C) Disinfection Byproducts…………………………………………………….. 51-55 (D) Disinfection Residuals………………………………………………………. 55 (E) Disinfection Byproduct Precursors…………………………………………. 55-56 (F) Monitoring Plans……………………………………………………………. 56 (G) Compliance………………………………………………………………….. 56-59 f) Protection of Distribution System ...... 59-60 (1) Water Pressure ...... 59 (2) Consumer Premises ...... 59 (3) Cross Connection Inspection of Consumer Premises…………………...... 59-60 (4) Non-service of PWS to Consumer Premises ...... 60 (5) Finished Water Storage Tanks, Basins and Clearwells ...... 60 (6) Flushing ...... 60 g) Laboratory and Operating Tests ...... 60 h) Reporting of Tests ...... 60-71 (1) Reporting Total Coliform MCL Violations...... 60 (2) Reporting Monitoring Violations ...... …...... 60-61 (3) Reporting failure to comply with any established MCL - 48 Hours ...... 61 Current with materials published in Connecticut Law Journal through 11/06/2007

2 (4) Reporting Sample Results to the Department – 9 Days...... …...... 61 (5) Lead and Copper ...... 61-64 (A) Reporting Requirements for tap monitoring and WQPs……………………….. 61-62 (B) Source Water Reporting Requirements………………………………………… 62 (C) Corrosion Control Treatment Reporting Requirements…………………………. 62 (D) Source Water Treatment Reporting Requirements……………………………… 62-63 (E) Lead Service Line Replacement Reporting Requirements………..…………….. 63-64 (F) Public Education Program Reporting Requirements……………………………… 64 (G) Reporting of Additional Monitoring Data…………………………………………. 64 (6) Reporting Requirements – Surface Water and GWUDI sources……………………..... 64-67 (A) Systems that do not provide and operate treatment……………………………….. 64 (B) Systems the provides and operates treatment……………………………………… 64-67 (7) Reporting and Record Keeping Requirements – Disinfectants and DPBs…………… 67-70 (A) Disinfectants……………………………………………………………………… 68 (B) Disinfection Byproducts…………………………………………………………. 68-69 (C) DBP precursors & enhanced coagulation or enhanced softening………………… 69-70 (8) Reporting and Record Keeping Requirements – Filter Backwash Recycling………… 70-71 (A) Notification to the Department if the system recycles water…………………….. 70 (B) Collection and file retention of recycle flow information…………………………. 70-71 i) Public Notification of Variances, Exemptions and Noncompliance with Regulations ...... 71-75 (1) Tier I Violation ...... 71 (2) Tier II Violation ...... 71 (3) Tier III Violation ...... ….. 71-72 (4) General Content of Public Notices for Tier I, Tier II, and Tier III Violations………. 72-73 (5) General Content of Public Notices for Other Violations ...... 73-74 (6) Public Education Requirements ...... 74 (7) Public notice to consecutive systems………………………………………………. 74 (8) Certification to the Department of completed public notice……………………….. 74 (9) Notice to new customers or billing units…………………………………………… 74 (10) Consumer confidence report requirements…………………………………………. 74-75 j) Treatment techniques ...... 75-93 (1) Maximum Contaminant Level Goals (MCLG) for microbiological contaminants… 75 (2) General Requirements – Surface Water and GWUDI sources...... 75-76 (3) Disinfection ...... 76-77 (4) Filtration ...... 77-78 (5) Treatment techniques for Acrylamaide and Epichlorohydrin ...... 78 (6) General Requirements – Control of Lead and Copper ...... 78-80 (A) Applicability and effective dates……………………………………………….. 78 (B) Lead and copper action levels………………………………………………….. 78-79 (C) Corrosion control treatment requirements……………………………………… 79 (D) Source water treatment requirements………………………………………….. 79 (E) Lead service line replacement requirements…………………………………… 79 (F) Public education requirements………………………………………………….. 79 (G) Monitoring and analytical requirements……………………………………….. 79 (H) Reporting requirements………………………………………………………… 79 (I) Record keeping requirements…………………………………………………… 80 Current with materials published in Connecticut Law Journal through 11/06/2007

3 (J) Violation of drinking water regulations…………………………………………. 80 (7) Applicability of Corrosion Control Treatment Steps ...... 80-84 (A) Completion of corrosion control treatment requirements……………………… 80 (B) Criteria for systems that is deemed to have optimized corrosion control……… 80-82 (C)Termination of treatment steps for small and medium sized systems…………… 82 (D) Treatment steps and deadlines for large systems……………………………….. 82-83 (E) Treatment steps and deadlines for small and medium sized systems……………. 83-84 (8) Description of Corrosion Control Treatment Techniques ...... 84-87 (A) Water system’s proposal for corrosion control treatment……………………… 84 (B) Department decision to require studies of corrosion control treatment………… 84 (C) Performance of corrosion control studies………………………………………. 84-85 (D) Department review of optimum corrosion control treatment…………………… 85 (E) Installation of optimal corrosion control………………………………………… 85 (F) Department review of treatment and specifications of optimum parameters…… 85-86 (G) Operation and maintenance of treatment for systems optimizing corrosion control.. 86-87 (H) Modification of Department treatment decisions…………………………………… 87 (9) Source Water Treatment Requirements ...... 87-89 (A) Deadlines for completing source water treatment steps………………………… 87-88 (B) Description of source water treatment requirements……………………………. 88-89 (10) Lead Service Line Replacement Requirements ...... 89-91 (11) Treatment technique for control of disinfection byproduct precursors……………… 91-93 (A) Applicability…………………………………………………………………….. 91-92 (B) Enhanced coagulation and enhanced softening performance requirements…….. 92 (C) Compliance calculations………………………………………………………… 92-93 (D) Provisions in lieu of calculations for compliance with TOC percent removal….. 93 k) Variances and Exemptions ...... 93-94 l) Record maintenance ...... 94-96 (1) Record Retention by owner or operator of public water systems...... 94-95 (2) Record Retention by Department- 5 Years ...... 95 (3) Record Retention by Department - Current Status ...... 95-96 (4) Record Retention by Department – Consumer Confidence Reports……………….. 96 (5) Record Retention by Department – Turbidity measurements and disinfection residuals… 96 (6) Record Retention by Department – Public notice and certification of compliance………. 96 m) Emergency Powers ...... 96 n) Reservoir, Ground Water and Water Use Monitoring ...... 96 o) Supply Capacity of each community public water system…...... 96-97 p) Sufficient Capacity - sources of supply, treatment, pumping, transmission and storage facilities.. 97 q) Valves ...... 97 r) Emergencies – availability of 24 hour phone number to customers of a community system…. 97 s) Unaccounted for Water - Reduction Program ...... 97

Current with materials published in Connecticut Law Journal through 11/06/2007

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