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  • Secondary containment for oil-filled operation equipment under SPCC

    On December 26, 2006, EPA provided an optional alternative to the general secondary containment requirements in 40 CFR §112.7(c) for qualified oil-filled operational equipment ( 71 FR 77266 ). Because the alternative is optional, an owner or operator could choose to comply with the existing SPCC requirements to provide general…

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  • How does the Safe Drinking Water Act limit lead in pipes, plumbing fittings, fixtures, faucets, solder and flux?

    Answer: Section 1417 of the Safe Drinking Water Act (SDWA) establishes the definition for “lead free” as a weighted average of 0.25% lead calculated across the wetted surfaces of a pipe, pipe fitting, plumbing fitting, and fixture and 0.2% lead for solder and flux. The Act also provides a methodology…

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  • Is exposure to lead contaminated drinking water from absorption through skin a health threat?

    Answer: Human skin does not absorb lead in water. For more information visit our website: https://www.epa.gov/ground-water-and-drinking-water/basic-information-about-lead-drinking-water . Question (23002-32377) Find a printable PDF copy of all frequent questions pertaining to lead .

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  • Are non-transient, non-community water systems (NTNCWSs) required to monitor for lead and copper?

    Answer: All community water systems (CWSs) and NTNCWSs must collect lead and copper tap samples. The frequency of the monitoring and number of samples to be collected and analyzed is based primarily on the number of people served and tap water monitoring results. For an outline of monitoring requirements (e.g…

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  • Is there anything else I can do beyond flushing my tap or buying bottled water?

    Answer: Yes, find “Important Steps You Can Take to Reduce Lead in Drinking Water” if you are concerned about lead in their drinking water. The list is not intended to be exhaustive or to imply that all actions equally reduce lead from drinking water. EPA recommends you also contact your…

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  • My neighbors got their water tested and found lead. Is my water safe?

    Answer: Lead usually gets into drinking water through contact with plumbing materials such as lead pipes or lead solder, or faucets, valves, and fixtures made of brass (brass contains some lead). Since each home has different plumbing pipes and materials, test results are likely to be different for each home…

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  • Can one still sell lead solder under the Lead Ban?

    Answer: Section 1417(a)(3) of the Safe Drinking Water Act (SDWA) prohibits the sale of solder and flux that is not lead-free unless the solder or flux bears a prominent label stating that it is illegal to use the solder or flux in the installation or repair of any plumbing providing…

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  • Why do water systems add phosphate to drinking water? What are the health effects of drinking water containing phosphates? 

    Answer: Public water systems (PWSs) commonly add phosphates to drinking water to prevent the release of metals in drinking water. Orthophosphate is most commonly used for lead and copper control. Polyphosphates sequester iron and manganese to prevent discolored water but are not effective to control lead and copper. Blended phosphates…

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  • What sources make up the Tier 1 categories used in the emissions trends?

    Tier 1 categories are assigned by source classification codes (SCCs) that are the most specific processes available in the NEI. The latest SCC list with the Tier 1 assignments can be downloaded from the EPA SCC website in Comma Separate Values (CSV) format.

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  • What is the cause of the large decrease in electric utility emissions, particularly sulfur dioxide, starting in 1995?

    SO2 emissions reductions from utilities during this time are primarily attributed to the impacts of the acid rain program. As described on EPA’s Acid Rain Program web page, Phase 1 of this program began in 1995 and affected 263 units at 110 most coal-burning electric utility plants in 21 eastern…

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  • SPCC requirements for transfer areas associated with exempt USTs

    Gas stations typically are not subject to the SPCC Rule because completely buried storage tanks subject to 40 CFR Part 280 or 281 are exempt per §112.1(d)(4). However, a gas station would be subject to the SPCC Rule if it has more than 1,320 gallons of oil in aggregate above…

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  • Do the changes in the 2006 Amendments apply to oil-filled manufacturing equipment?

    No. The amendment does not change any requirements for oil-filled manufacturing equipment. Oil-filled manufacturing equipment remains subject to the SPCC requirements (including those for containment), but an owner/operator may determine that secondary containment is impracticable and comply with the alternative measures in section 112.7(d).

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  • What is an oil spill contingency plan?

    Instead of providing secondary containment for qualified oil-filled operational equipment, an owner or operator may prepare an oil spill contingency plan and a written commitment of manpower, equipment, and materials to quickly control and remove discharged oil. He/she must also have an inspection or monitoring program for the equipment to…

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  • Secondary containment requirements for mobile refuelers

    What secondary containment requirements apply to mobile refuelers? General secondary containment requirements in §112.7(c) still apply to mobile refuelers at SPCC regulated facilities. General secondary containment should be designed to address the most likely discharge from the container and from oil transfers into or from the mobile refueler. The general…

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  • Read frequent questions on lead in drinking water

    Read frequent questions on lead in drinking water . Find a printable PDF copy of all frequent questions pertaining to lead .

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