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Total Coliform Rule Basics September 2009 Jan Brewer, Governor Benjamin Grumbles, ADEQ Director.

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Presentation on theme: "Total Coliform Rule Basics September 2009 Jan Brewer, Governor Benjamin Grumbles, ADEQ Director."— Presentation transcript:

1 Total Coliform Rule Basics September 2009 Jan Brewer, Governor Benjamin Grumbles, ADEQ Director

2 ADEQ Total Coliform Rule Specialist Suzanne Price ADEQ WQD Drinking Water Section DW Monitoring & Protection Unit (602)

3 What You Need to Know: 40 CFR §141.21/R Total Coliform Monitoring Requirements, Violations & Public Notification 40 CFR § thru 141 Appendix C to Subpart Q/R

4

5 A Few Words about –Who needs to monitor –What are coliforms –Why sample for coliforms –Proper sampling protocol –Invalidation of samples

6 The Target E. Coli Bacteria

7 Agenda Routine Samples Repeat Samples Increased Monitoring Reporting Types of TC Violations Public Notice Questions & Answers

8 Sampling Frequency SamplesPopulation 125 – 1,000 21,001 – 2,500 32,501 – 3,300 43,301 – 4,100 54,101 – 4,900 Number of samples per month depends on population served 40 CFR §141.21(a)(2) R– F

9 Routine Sample Results If the sample(s) is negative or absent = OK If total coliforms are positive or present –Tested for fecal coliform and e. coli Resamples are necessary

10 Lab Results Your Lab is supposed to inform you if your result is positive for total coliforms You need to inform ADEQ if you have a positive total coliform

11 Repeat Samples How Many? –If a PWS takes 1 routine sample per month, at least 4 repeat samples –If a PWS takes more than 1 routine sample per month, at least 3 repeat samples per positive routine sample repeatHow many repeat sample(s) if repeat positive coliform? –Continue to take a set of repeat samples until you have one complete set of samples absent of total coliforms

12 Repeat Samples Where does the operator take repeat samples? –1 repeat from the original sample point –1 repeat within 5 service connections upstream –1 repeat within 5 service connections downstream – If a 4 th sample is required, it may be taken from any sampling point in the system Follow your sampling plan –When in doubt, call your inspector or –Rule Assistance (602)

13 Possible Repeat Scenarios W TPS POE

14 When Repeats are Collected Upon notification of a total coliform positive result the PWS will collect: –Repeat samples on the same day, or –within 24 hours If Fecal or E. Coli are not present, ADEQ may extend these time periods for logical reasons: –Difficulty getting samples to the lab within proper holding time frame –PWS with a single service connection may be able to take repeats over time

15 Increased Coliform Monitoring Is required the following month: Following month is always relative to the original positive routine sample All PWS that collect fewer than 5 routine samples per month With 1 or more total coliform positive routine samples Must collect a total of 5 routine samples if the PWS is providing water to the public In addition to repeat sampling requirement

16 Increased Coliform Monitoring 1 positive routine coliform: = 10 1 positive routine + 1 positive repeat: = 14 + non acute MCL violation

17 Increased Coliform Monitoring If repeat samples come up total coliform positive, the PWS will keep sampling until: –Total coliforms are not detected in 1 complete set of repeat samples OR –MCL for total coliform is violated

18 Do I really have to do all these resamples? NO, But… If a PWS assumes in every case that all total coliform positive samples are also fecal coliform or E. coli positive, they can forego additional testing A PWS then faces Acute MCL Violations and Public notification requirements

19 Coliform Sample Reporting 40 CFR §141.31(a) Subpart D/R A1 –You are required to report your routine sampling results 10 days after the result or At the end of the applicable monitoring period Example: March monitoring due by April 10 –If you or your lab fail to report Violations noted in Safe Drinking Water Information System (SDWIS) TC reminder letters created 3 rd week of following month Missed monitoring or notice of possible enforcement action letters from us

20 Coliform Sample Reporting DWAR-1 Form modified 11/01/07 Service agreement with laboratory to report ID# & Name Repeat Box – Original specimen number & location Whats an RT vs RP Increased monitoring= RT

21 Bacti Violations

22 Types of Violations MCL –24 hour or Acute (must have a confirmation repeat sample before it is considered an MCL) –Monthly or non acute Routine Missed Monitoring –Major: No samples collected for compliance period –Minor: Some but not all samples collected for compliance period Repeat Missed Monitoring –Major: No follow-up samples collected after a TC+ or no speciation –Minor: Some but not all follow-up samples collected or speciated for compliance period

23 Types of Violations MCL Exceedance for Total Coliform –Acute Any fecal coliform-positive repeat sample or Escherichia coli (E. Coli)-positive repeat sample is an acute violation Any total coliform-positive repeat sample following a fecal coliform-positive or E. coli-positive routine sample is an acute violation Specified in 40 CFR § (b)/R (A)(3) or R (A)(4) Failure to test for fecal coliforms or E. coli when a repeat samples tests positive for total coliform

24 Types of Violations Acute –Any fecal coliform positive or E. coli positive repeat sample –Any total coliform-positive repeat sample following fecal coliform or E. coli positive routine sample –There must always be a repeat confirmation sample Non acute –PWS collects fewer than 40 samples per month, no more than 1 sample may be total coliform positive –PWS collecting 40 or more samples per month, no more than 5% may be total coliform positive

25 Types of Violations Assume a routine sample is positive for total coliform: Routine sample (TC+) is fecal coliform or E. Coli negative –All resamples are total coliform negative = OK –Resample is TC+ & fecal coliform or E. coli is negative = MCL Violation, Non acute –Resample is TC+ & fecal coliform or E. coli positive = MCL Violation, Acute

26 Avoid Violation Traps Reporting Errors –Report results on time –Report positive results –Fill out Monitoring form correctly & completely –Make sure who is reporting to ADEQ –Inform ADEQ of system & contact changes Sampling Errors –Take the appropriate number of repeats & increased routine monitoring samples –In appropriate time frames –Avoid windy days –Be aware of population change requirements

27 When Public Notice is Required MCL Exceedance –Acute, Tier 1 –Non acute Tier 2 Missed Monitoring Non acute, Tier 3 –Routine major and minor –Repeat major and minor

28 Public Notice for MCL Violations Acute –24 hour public notice –Consult with ADEQ to determine additional requirements: (800) – 5677 –Provide public notice via: Appropriate broadcast media, including radio and TV Post in conspicuous locations throughout the area Hand deliver to persons served by the water system Other method(s) approved by ADEQ in writing

29 Public Notice for Acute MCL Consult with ADEQ Use only EPA template Meets all criteria To obtain a copy call –(602) Spanish version available EPA Website: PN Handbook pws/pn/handbook.pdf

30 Public Notice – Required Language Description of violation or situation When violation or situation occurred MANDATORY Health Effects Language Population at risk Whether alternate water supplies should be used Actions consumers should take Corrective actions being taken When PWS will resolve problem Name, number, and address for additional information Standard distribution language Prop 103 disclaimer

31 Public Notice – Required Language Standard language: Please share this information with all the other people who drink this water, especially those who may not have received this notice directly (for example, people in apartments, nursing homes, schools, and businesses). You can do this by posting this notice in a public place or distributing copies by hand or mail.

32 Public Notice for Acute MCL New Disclaimer required: Result of Prop 103 Any ADEQ translation or communication in a language other than English is unofficial and not binding on the State of Arizona. Cualquier traduccion o comunicado de ADEQ en un idioma diferent al ingles no es oficial y no sujetara al Estado de Arizona a ninguna obligacion juridica. Why include the Disclaimer?

33 Public Notice for Non Acute MCL Non acute or Tier 2 –All other MCL violations where 24 hour public notice is not required; 30 day notice is required –Provide notice as soon as possible, no later than 30 days after learning of the violation –Consult with ADEQ to determine additional requirements –Provide public notice via appropriate methods Direct delivery to each customer receiving a bill & others served Other methods to reach people: Publication in local newspaper, delivery of multiple copies to customers (i.e. apartments & community organizations), posting in public places, internet –Must post 7 days or as long as the violation or situation lasts – generally 30 days

34 Public Notice for Other Non Acute Total Coliform Violations Non acute, Tier 3 violations –When 24 hour or 30 day public notice is not required –A PWS may use one annual public notice detailing all Non acute Tier 3 violations after it learns of the violations or situation that occurred during the previous 12 months rather that the individual public notices CWS may use the Consumer Confidence Report (CCR) as a vehicle for the initial 12 month public notice –Notify ADEQ of your intention in writing A Non CWS should provide public notice in conspicuous locations throughout the distribution system.

35 Public Notice for Other Non- acute Total Coliform Violation Consult with ADEQ Rule Specialist Use ADEQ form entitled Public Notice/Failure to Monitor Meets all criteria To obtain a copy call –(602) Spanish version may be required For each PN form, note specific language requirements. Refer to EPA PN Handbook: pws/pn/handbook.pdf

36 Public Notice Reporting Use EPA forms or ADEQ approved PN forms Submit within 10 days after date of completion of PN a representative copy of the notice distributed to persons served or to the media –40 CFR § (d)/R and R NEW!NEW! And submit a completed Certificate of Public Notice Distribution form

37 Certificate of PN Distribution For all PWS public notice Certification Notarization no longer necessary Replaces all other previous ADEQ forms Can be signed by Certified Operator, PWS Officer/Manager

38 Question If you are a small system and get one positive routine Bacti, how many repeats plus increased monitoring samples will you need to take to stay in compliance, providing all results are negative? (Answer does not include the original sample.) A. Four (4) B. Five (5) C. Nine (9) D. Ten (10)

39 Answer If you are a small system and get one positive routine Bacti, how many repeats plus increased monitoring samples will you need to take to stay in compliance, providing all results are negative? (Answer does not include the original sample.) C. Nine (9)

40 Question If you are a small system taking one total coliform sample per month, where should repeat samples be taken following a positive routine Bacti? A. It depends on whether the sample is at the end of the distribution line B. Within Five (5) service connections upstream & 5 downstream C. One anywhere in the distribution system D. All of the above

41 Answer If you are a small system taking one total coliform sample per month, where should repeat samples be taken following a positive routine Bacti? D. All of the above

42 Question Bacti monitoring reports should reach ADEQ by what date to help a PWS avoid missed monitoring violations? A. The end of the following month B. The end of the monitoring month C. By the 10 th of the month following the monitoring month D. There is no time requirement

43 Answer Bacti monitoring reports should reach ADEQ by what date to help a PWS avoid missed monitoring violations? C. By the 10 th of the month following the monitoring month

44 Question How soon should you notify ADEQ when your PWS has a positive Bacti and fecal or E. Coli positive sample? A.Within 24 hours B.As soon as you learn of the results C.There is no reason to notify ADEQ until the PWS has an acute MCL D.None of the above

45 Answer How soon should you notify ADEQ when your PWS has a positive Bacti and fecal or E. Coli positive sample? B.As soon as you learn of the results

46 But theres more… Under the Groundwater Rule –One positive total coliform requires testing for fecal indicators at the source –Begins December 1, 2009 In addition to required distribution system repeat and increased routine monitoring


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