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Interim
Enhanced Surface Water Treatment Rule (IESWTR)
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and
Disinfection By-products Rule (DBPR)
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| The
provisions of the IESWTR and DBPR went into effect
on January 1, 2002. |
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| These
are federal rules which apply to public water systems that use surface
water, or ground water under the direct influence of surface water
(GWUDI), and serve at least 10,000 people. The rules are
designed to improve the quality of the water delivered by surface
water treatment plants. For instance, the allowable turbidity from
a surface water treatment plant has been reduced from .5 to .3 NTU. |
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| Currently,
the primary enforcement responsibility for these rules rests with
EPA
Region 8. The Utah Division of Drinking Water intends to assume
this role at some future date. Until that time, for assistance please
contact Bob Clement
with EPA Region 8 at 1-800-227-8917. |
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further information on the rules, see: |
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Interim
Enhanced Surface Water Treatment Rule Information (US EPA) |
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Microbial
and Disinfection Byproducts Rules: Implementation (US EPA) |
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| Systems
subject to the new rules must continue submitting the usual monthly
operational reports to the Utah Division of Drinking Water. Go to
Blank Forms for a copy of the Utah
form. |
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| Additionally,
monthly operational reports must be sent to Bob
Clement at EPA
Region 8. The above-mentioned Utah form (which describes combined
filter effluent) must be sent, along with the appropriate additional
forms: |
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Monthly
Report for Systems Serving >10,000 using Conventional or Direct
Filtration (pdf) |
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Monitoring
Forms for Compliance with TTHMs and HAA5s (pdf) |
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Monitoring
Forms For Alternative Compliance Criteria #1 (pdf) |
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Monitoring
Plans, as follows (pdf) : |
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- Monitoring
Plan for Bromate and Bromide for Systems Using Ozone
- Monitoring
Plan for TTHMs / HAA5s
- Worksheet
on How to Calculate the Number of Samples for TTHMs / HAA5s
- Monitoring
Plan for Source Water Total Organic Carbon (TOC) for Reduced
Monitoring for TTHMs/HAA5s.
- Monitoring
Plan for Chlorine/Chloramines.
- Monitoring
Plan for Chlorite and Chlorine Dioxide for Systems for Using
Chlorine Dioxide
- Monitoring
Plan for Source Water Total Organic Carbon (TOC), Source Water
Alkalinity and Finished Water TOC.
- Monitoring
Plan for Source Water Specific Ultraviolet Absorption (SUVA).
- Monitoring
Plan for Finished Water Specific Ultraviolet Absorption (SUVA).
- Monitoring
Plan for Source and Finished Water Alkalinity.
- Monitoring
Plan for Source and Finished Water Magnesium.
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This
Page Last Updated on 1/10/02
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