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Table I-1.
| CCR Due Date | Arsenic Result | The System Must Include the following Statement(s) in the CCR | |
|---|---|---|---|
| Informational Statements | Health Effects Satements | ||
| July 1, 2002, and beyond2 | > 0.005 mg/L (5µg/L) but ≤ 0.01 mg/L (10µg/L) | While your drinking water meets EPA's standard for
arsenic, it does contain low levels of arsenic. EPA's standard balances
the current understanding of arsenic's possible health effects against
the costs of removing arsenic from drinking water. EPA continues to
research the health effects of low levels of arsenic which is a mineral
known to cause cancer in humans at high concentrations and is linked
to other health effects such as skin damage and circulatory problems
(40 CFR 141.154(b)(1)). |
None. |
| July 1, 2002 thru July 1, 20062 | > 0.01 mg/L (10µg/L) but ≤ 0.05 mg/L (50µ g/L) 3,4 | None. | Some people who drink water containing arsenic in excess of the MCL over many years could experience skin damage or problems with their circulatory system, and may have an increased risk of getting cancer (40 CFR 141.154(f) and 141.153(d)(6)). |
| July 1, 2007, and every July 1 thereafter | > 0.01 mg/L (10µg/L)
(System is out of compliance with the MCL and must provide this information in its CCR.) |
None. | Some people who drink water containing arsenic in excess of the MCL over many years could experience skin damage or problems with their circulatory system, and may have an increased risk of getting cancer 40 CFR 141.154(f) and 141.153(d)(6)). |
1Systems may write their own educational statements, but only in consultation with the Primacy Agency (40 CFR 141.154(b)(2)).
2 A system that collects a sample before March 23, 2001, at a sampling point and does not collect a sample in 2002 and 2003 must use the result of the 2001 sample for the CCRs due 2003 and 2004 (40 CFR 141.153(d)(3)(i)). If the result of the 2001 sample is > 0.005 mg/L (5µg/L) but ≤0.01 mg/L (10µg/L) the system must include an informational statement and if the result of the 2001 sample is > 0.01 mg/L (10µg/L) but ≤ 0.05 mg/L (50 µg/L) the system must include the health effects statement from the Final Arsenic Rule (40 CFR 141.154(b)&(f)).
3Since the revised 0.01 mg/L (10µg/L) MCL does not take effect until January 23, 2006, if the annual average at any sampling point is above 0.05 mg/L (50µg/L) the system is in violation of the MCL and must include health effects language in the CCR (40 CFR 141.153(d)(6)).
4EPA invoked its authority under SDWA § 1414(c)(4)(B)(vi) to require inclusion of health effects language for arsenic exceedances before the February 22, 2002, effective date. Systems are required to include this health effects information even though, technically, the system is not in violation of the Arsenic Rule. Systems may put this health effects information into context by explaining to customers that the system is complying with existing standards.