Long Term 2 Enhanced Surface Water Treatment Rule & Ground Water Rule Updates for Oklahoma Water Systems

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1 Long Term 2 Enhanced Surface Water Treatment Rule & Ground Water Rule Updates for Oklahoma Water Systems June 2014

2 October 1, 2013 Administra5on of three Drinking Water Rules transferred from EPA to Oklahoma DEQ: Stage 2 Disinfectants and Disinfec5on Byproducts Rule (Stage 2 DBP) Long Term 2 Enhanced Surface Water Treatment Rule (LT2) Ground Water Rule (GWR)

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4 LONG TERM 2 ENHANCED SURFACE WATER TREATMENT RULE (LT2 RULE)

5 Long Term 2 Enhanced Surface Water Treatment Rule What is the intent of the rule? Reduce disease associated with Cryptosporidium and other disease causing microorganisms Cryptosporidium is a parasite Its covered by a protec5ve outer shell survives outside the body for long periods protected from disinfectants Common in surface water Causes gastrointes5nal illness

6 Long Term 2 Enhanced Surface Water Treatment Rule To reduce risk you must iden5fy the most at risk surface water sources PWS serving <10,000 people must sample for E. coli once every two weeks for 12 months If E. coli threshold is exceeded then sample for Cryptosporidium for 24 months

7 Long Term 2 Enhanced Surface Water Treatment Rule To reduce risk you must iden5fy the most at risk surface water sources PWS serving >=10,000 people must sample for Cryptosporidium, E. coli and turbidity for 24 months

8 Long Term 2 Enhanced Surface Water Treatment Rule PWSs have completed the 1 st round of Cryptosporidium monitoring New PWSs or PWSs with new surface water sources must conduct Cryptosporidium or E. coli monitoring

9 Long Term 2 Enhanced Surface Water Treatment Rule Five PWSs exceeded Cryptosporidium ac5on levels during the first round of monitoring Four PWSs must meet addi5onal treatment requirements by October 1, 2013 One PWS must meet addi5onal treatment requirements by October 1, 2014 New repor5ng requirements for these PWSs on Monthly Opera5ng Reports (MOR)

10 Long Term 2 Enhanced Surface Water Treatment Rule The types of addi5onal treatment u5lized by Oklahoma systems so far: Mee5ng stricter individual filter effluent turbidity & combined filter effluent turbidity Using chlorine dioxide disinfec5on There is a wide range of treatment and management strategies

11 Long Term 2 Enhanced Surface Water Treatment Rule A few other treatment op5ons: Membrane filtra5on, ozone, or UV

12 Long Term 2 Enhanced Surface Water Treatment Rule DEQ will work with systems to develop an appropriate sample site plan System must select a cer5fied laboratory for sample analysis and sample collec5on techniques At this point, PWSs will be responsible for the cost of analysis unlike during the first round of monitoring

13 Long Term 2 Enhanced Surface Water Treatment Rule Second round of monitoring start dates: 1) At least 100,000 people April ) 50,000 to 99,999 people October ) 10,000 to 49,999 people October ) Fewer than 10,000 people E. coli monitoring only October 2017 Cryptosporidium monitoring April 1, 2019

14 GROUND WATER RULE (GWR)

15 Ground Water Rule What is the intent of the rule? Increased protec5on against microbial pathogens in systems using ground water The majority of waterborne diseass outbreaks occur at small non- disinfected ground water systems Protects public health by requiring higher- risk groundwater systems to monitor and, when necessary, take correc5ve ac5on

16 Ground Water Rule What is the intent of the rule? Ground Water Rule works in conjunc5on with the Total Coliform Rule Both rules u5lize results of E. coli analysis Total coliform rule focuses on the water quality of the distribu5on system Ground water rule focuses on the water quality of the ground water sources

17 Ground Water Rule To whom does the rule apply? Systems relying 100% on ground water Consecu5ve systems receiving ground water Systems with mixed surface and ground water

18 Ground Water Rule What does the rule require? Triggered monitoring of the ground water source(s) for E. coli When there is a posi5ve rou5ne total coliform rule sample (TCR+) Consecu5ve systems must no5fy all wholesale system(s) with wells that provide water to the consecu5ve system Consecu5ve systems must also no5fy DEQ

19 Ground Water Rule Consecu5ve System Op5ons for TC+ No5fica5on to DEQ Send e- mail to ALWAYS put PWSID# and system name in subject line Keep a copy of your sent in case it is needed for proof Or fax to (405) (Apn: Jennifer Alig) If e- mail is not possible Or call (405) if e- mail and fax are not possible and water system logs all calls

20 Ground Water Rule Differences in EPA/DEQ rule implementa5on Well samples must s5ll be collected within 24 hours of TCR+: DEQ requires PWS to sample wells that were in use or could have been in use at the 5me the TCR+ sample was collected EPA required PWS to sample all wells used in the past 30 days

21 Ground Water Rule Differences in EPA/DEQ rule implementa5on Well samples must s5ll be collected within 24 hours of TCR+: Samples must be collected at the raw water taps if chlorine is present, the sample will be rejected DEQ con5nues to educate cer5fied labs that triggered source samples cannot have chlorine present

22 Ground Water Rule Differences in EPA/DEQ rule implementa5on Well samples must s5ll be collected within 24 hours of TCR+: If samples cannot be collected within 24 hours, contact DEQ for guidance extensions may be granted if DEQ is contacted immediately EPA contact no longer required

23 Ground Water Rule Differences in EPA/DEQ rule implementa5on Enhanced focus on technical assistance Call DEQ for immediate assistance with GWR sampling ques5ons Inform DEQ of TCR+ samples in consecu5ve systems and request DEQ guidance for consecu5ve system no5fica5ons In the case of E. coli at a well, no5fy DEQ immediately DEQ will provide assistance with Boil Advisories, Public No5fica5ons, and any required correc5ve ac5ons

24 DEQ Contacts LT2 Rule: Jordan Canary (405) Ground Water Rule: Jennifer Alig (405) Any Rule: PWS Compliance Tracking Sec5on (405)

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