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HomeMy WebLinkAboutDDW-2024-006070January 18, 2024 Trevor K Clegg Kamas City Water System 170 N Main St Kamas, UT 84036 Subject:Notification for Groundwater Required to Disinfect to Secondary Requirements – Kamas City Water System, UTAH22007, Distribution System (DS001) Dear Trevor K Clegg: The Division of Drinking Water (the Division) records indicate that you are the responsible party for the Kamas City Water System. The Kamas City Water System water system is a public water system and thus subject to the Administrative Rules for Public Drinking Water Systems. The Division has determined that, based on recent water quality samples, Kamas City Water System does not reliably meet bacteriological standards in the distribution system. Kamas City Water System is now subject to requirements to provide continuous secondary disinfection throughout the entire distribution system and meet the following requirements: ●Submit documentation demonstrating achievement of secondary disinfection or apply for plan approval and obtain an operating permit for modifications to your chlorination facility that achieves secondary disinfection for the entire distribution system. ●Provide continuous disinfection and demonstrate compliance with secondary disinfection requirements through ongoing monitoring and reporting. ●Conduct monthly source assessment bacteriological monitoring of the Left Hand Fork Spring (WS002), Hillside Well (WS003), and Simpson Well (WS004) for assessment purposes. You must notify the Division in writing, within 30 days of the date of this letter, what action will be taken to address the low water quality in the distribution system.This correspondence should be addressed to the Vulnerable Source Assessment Team at EQDWVSA@utah.gov. If these steps are not completed within 30 days from the date of this letter the Division may need to follow up with formal enforcement actions. If you cannot complete the above steps within 30 days, the Division encourages you to apply for a Corrective Action Plan (CAP). The purpose of a CAP is to establish terms, conditions, and timelines for a water system to come into compliance with the significant deficiencies. A CAP can be granted if there are no violations associated with the deficiencies. A system can request a temporary CAP extension at Trevor K Clegg Page 2 of 4 January 18, 2024 requestcap.utah.gov. Nothing in the Corrective Action Plan prohibits the Division from taking further enforcement actions if a system fails to comply with the requirements in the Corrective Action Plan. If you have further questions regarding a CAP, contact Brandi Smith at (385) 515-1650. Background In May of 2023, Kamas City Water System routine testing confirmed Escherichia coli (E. coli)within the distribution system. Out of a total of 20 distribution system samples, six samples were total coliform-positive, and two samples tested positive for E. coli. One sample was taken at Hillside Well (WS003) that was total coliform absent. At the Division’s request, the Kamas City Water System issued a boil order on May 26, 2023. The boil order was removed on May 29, 2023, following two sets of repeat samples testing negative for coliform bacteria and the system verified a failed pump in the chlorinator had been replaced. On May 31, 2023, Utah Division of Drinking Water Scientist Brian Pattee conducted a Level 2 Assessment in response to the pattern of the positive coliform and E.coli samples. In a report mailed to the System on August 25, 2023, the Division noted the following conclusions that may have led to the bacteriological issues in May: 1. The cause of the positive samples is unknown currently, the only source suppling [sic]the system Well WS003 has a clean bacteriological sample history. 2. The Chlorinator failure at the exact time of this incident could be considered a contributing factor in the positive samples. 3. Silt and sand build up in storage tanks could be a cause. 4. Cross Connection in the area of the Positive samples is always a possibility, although there were TC+ samples in other areas of the system. Coliform bacteria, including E. coli, indicate potential contamination in drinking water. Coliform bacteria are commonly found in the intestines of warm-blooded animals and suggest the possible presence of harmful pathogens. Consuming water contaminated with coliform bacteria, particularly E. coli, can result in various health issues, such as gastrointestinal problems, diarrhea, abdominal cramps, and nausea. In severe cases, it can lead to more serious conditions like kidney failure or hemolytic uremic syndrome (HUS), especially among vulnerable populations like the elderly, the young, and those with compromised immune systems. Disinfection processes, like chlorination, play a crucial role in protecting public health by removing harmful bacteria, including coliforms and E. coli, ensuring the safety of drinking water. The bacteriological results indicate that Kamas City Water System does not reliably meet bacteriological standards in the distribution system.Based on your sample history, Kamas City Water System is subject to requirements to provide continuous secondary disinfection of the entire distribution system and may be subject to additional treatment if further water quality sampling results indicate that any of Kamas City Water System’s sources require primary disinfection. Trevor K Clegg Page 3 of 4 January 18, 2024 For Existing Chlorinators The Division does not have sufficient information on the existing chlorinator (Hillside Tank Chlorinator, TP001) to determine if it is designed to meet all requirements for secondary disinfection. Please provide documentation that the following requirement is met within 120 days to avoid the addition of deficiency points to Kamas City Water System Water Sytem’s IPS report: ●TD22 – Lacks backup power supply for required disinfection (SIG, 25 points) Required Actions The Kamas City Water System is subject to requirements to operate Division-approved permanent disinfection in the entire distribution system. The system must comply with the secondary disinfection monitoring and reporting requirements described in Addendum A. The water system must complete Division Plan Approval prior to construction of any disinfection facilities. Until the above actions are taken, the distribution system will be marked as unapproved, and 200 IPS points will be assessed for an unapproved distribution system. Kamas City Water System’s distribution system will be marked as unapproved until disinfection is installed, and 200 IPS points will be assessed for use of an unapproved distribution system. Community water systems with more than 150 IPS points will be rated as unapproved systems if actions are not taken to address the IPS points. The 200 IPS points assessed for an unapproved distribution system puts Kamas City Water System above the threshold. Additionally, failure to correct the significant deficiency in a timely manner will result in the system being assessed a treatment technique violation in accordance with R309-215-16(4)(a) and 50 Improvement Priority System (IPS) points to the System’s IPS Report. Please note that you must notify the Division in writing within 30 days of the date of this letter what action will be taken to address the low water quality at this water system. If Kamas City Water System does not take the steps outlined in this letter, the Director may need to follow up with formal enforcement actions to protect public health.This correspondence should be addressed to the Vulnerable Source Assessment Team at eqdwvsa@utah.gov. Please contact Sarah Page at (385) 272-5778 or sepage@utah.gov if you have any questions or need technical assistance. Sincerely, Mark Berger Rules Section Manager Trevor K Clegg Page 4 of 4 January 18, 2024 RTCR/DBP/RulesMngr/VSALead/Eng/Assistant Director/Admin (processing)/Admin (mailing) [Initials] Enclosures: Addendum A - Secondary Disinfection Monitoring and Reporting Requirements Operational Report_GWRD Secondary August 25, 2023 Level 2 Assessment Letter cc: Nathan Brooks, Summit County Health Department, nbrooks@summitcounty.org Julie Cobleigh, Division of Drinking Water, jjcobliegh@utah.gov Mark Berger, Division of Drinking Water, mberger@utah.gov VSA Team, Division of Drinking Water, eqdwvsa@utah.gov Sarah Page, Division of Drinking Water, sepage@utah.gov Sitara Federico, Division of Drinking Water, sfederico@utah.gov Luke Treutel, Division of Drinking Water, ltreutel@utah.gov Michael Newberry, Division of Drinking Water, mnewberry@utah.gov Jennifer Yee, Division of Drinking Water, jyee@utah.gov Addendum A - Secondary Disinfection Monitoring and Reporting Requirements To meet secondary disinfection requirements, Kamas City Water System will be required to continuously maintain a minimum of 0.2 mg/L free chlorine residual at the Points of Entry (POEs) into the system and demonstrate a detectable chlorine residual in the distribution system. Secondary Disinfection Requirements and Reporting 1. Chlorine Residual ‒ Points of Entry (POE) to Distribution System (EP001, EP002, etc.) a. The POE sampling locations for each chlorinator will be identified in the Division’s database (i.e. the POE for TP001 would be EP001 and the POE for TP002 would be EP002). b. Maintain a minimum of 0.2 mg/L residual (measured as free chlorine) at the POE sampling locations. [R309-215-16(3)(b)(iii)(A)(I) and (II)] c. The chlorine residual concentration measured at the POE sampling locations shall not exceed the maximum residual disinfectant level (MRDL) of 4.0 mg/L (measured as free chlorine). [R309-200-5(3)(c)(iv)] d. Record and report the lowest daily chlorine residual concentration, measured as free chlorine, at the chlorinator POE sampling locations a minimum of daily.[R309-210- 8(3)(a)(ii)] 2. Chlorine Residual ‒ Distribution System (DS001) a. This water system must maintain a detectable residual throughout the distribution system. It is recommended to maintain the chlorine residual above 0.1 ppm in the distribution system. [R309-520-5] b. The chlorine residual measured in the distribution system shall not exceed the maximum residual disinfectant level (MRDL) of 4.0 mg/L (measured as free chlorine). [R309-200-5(3)(c)(iv)] c. Take a minimum of three (3) chlorine residual samples per week at varying locations throughout its distribution system (DS001). [R309-105-10(1)(c)] d. Distribution system chlorine residuals must be taken in conjunction with total coliform sampling. [R309-215-10(3)] Disinfection Report Submission To demonstrate ongoing compliance with secondary disinfection requirements, the Kamas City Water System water system must complete monthly operational reports for each active chlorinator using a template approved by the Division. 1.Operational reports are submitted quarterly. The operational report template has been enclosed with this letter. The reports are due to the Division by the 10th day following the end of each reporting month or quarter (i.e., January 10th, April 10th, July 10th and October 10 th for quarterly reports). The reports can be submitted by hardcopy, fax, or email at DDWReports@utah.gov. Please contact Luke Treutel at (385) 258-6084 or ltreutel@utah.gov to schedule training regarding proper reporting. 2. In addition to monthly disinfection reporting, this water system must submit the monthly average of chlorine residual samples taken in the distribution system. Distribution system chlorine residual monitoring results are due quarterly by the same compliance dates as the monthly disinfection report and can be submitted via an online form found at mrdl.utah.gov. Maintain monitoring records for a minimum of 5 years. [R309-105-17(1)]