Versions of See prior versions of a law on LawServer 2024 40 CFR 141.857 – Routine monitoring requirements for public water systems serving more than 1,000 people 2023 40 CFR 141.857 – Routine monitoring requirements for public water systems serving more than 1,000 people 2022 40 CFR 141.857 – Routine monitoring requirements for public water systems serving more than 1,000 people 2021 40 CFR 141.857 – Routine monitoring requirements for public water systems serving more than 1,000 people 2020 40 CFR 141.857 – Routine monitoring requirements for public water systems serving more than 1,000 people 2019 40 CFR 141.857 – Routine monitoring requirements for public water systems serving more than 1,000 people 2016 40 CFR 141.857 – Routine monitoring requirements for public water systems serving more than 1,000 people 2015 40 CFR 141.857 – Routine monitoring requirements for public water systems serving more than 1,000 people 2014 40 CFR 141.857 – Routine monitoring requirements for public water systems serving more than 1,000 people