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This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.

Lead and copper summaries

Each row is one summary of one monitoring period, and the agency records more than one kind.

1,921–1,940 of 5,736 monitoring-period summaries. From monitoring periods beginning September 26, 2021 to September 26, 2026.

Choose a date range

This page can show a range of up to 5 years at a time. That is a limit of this service, not of what the agency records.

Choose water systems
How to read a summary

Each row summarises one analyte over one monitoring period for one system. The number of samples behind each value is in the column beside it.

The agency records more than one kind of summary, and the Type column says which. Type 90 is the ninetieth percentile — the value 90% of that period’s samples fall at or below. The agency publishes no explanation for the other codes, so this page does not offer one: a value of another type is not a 90th percentile and must not be read as one.

Lead and copper sample summaries across the systems Mississippi State Department of Health serves, 1,921 to 1,940 of 5,736 monitoring-period summaries shown. Each row is one analyte over one monitoring period for one system, and the Type column says which kind of summary it is — only type 90 is a ninetieth percentile. The rows are in the agency’s own order and are not ranked by value.
County Water system Analyte Monitoring period Facility Samples Measure
Harrison City of Pass Christian, MS0240009 Copper Jan 1, 2022 – Dec 31, 2024 DS000 20 0.2 MG/L 90th percentile
Harrison City of Pass Christian, MS0240009 Copper Jan 1, 2022 – Dec 31, 2024 DS000 20 0.228 MG/L
Harrison City of Pass Christian, MS0240009 Copper Jan 1, 2022 – Dec 31, 2024 DS000 0 Not recorded
Harrison City of Pass Christian, MS0240009 Lead Jan 1, 2022 – Dec 31, 2024 DS000 20 0.001 MG/L 90th percentile
Harrison City of Pass Christian, MS0240009 Lead Jan 1, 2022 – Dec 31, 2024 DS000 20 0.0024 MG/L
Harrison City of Pass Christian, MS0240009 Lead Jan 1, 2022 – Dec 31, 2024 DS000 0 Not recorded
Harrison Keesler Air Force Base, MS0240049 Copper Jan 1, 2024 – Dec 31, 2026 DS000 20 0.0233 MG/L 90th percentile
Harrison Keesler Air Force Base, MS0240049 Copper Jan 1, 2024 – Dec 31, 2026 DS000 20 0.0389 MG/L
Harrison Keesler Air Force Base, MS0240049 Copper Jan 1, 2024 – Dec 31, 2026 DS000 0 Not recorded
Harrison Keesler Air Force Base, MS0240049 Lead Jan 1, 2024 – Dec 31, 2026 DS000 20 0.0011 MG/L 90th percentile
Harrison Keesler Air Force Base, MS0240049 Lead Jan 1, 2024 – Dec 31, 2026 DS000 20 0.0013 MG/L
Harrison Keesler Air Force Base, MS0240049 Lead Jan 1, 2024 – Dec 31, 2026 DS000 0 Not recorded
Harrison Naval Construction Battal CTR, MS0240060 Copper Jan 1, 2026 – Dec 31, 2028 DS000 20 0.221 MG/L 90th percentile
Harrison Naval Construction Battal CTR, MS0240060 Copper Jan 1, 2026 – Dec 31, 2028 DS000 20 0.222 MG/L
Harrison Naval Construction Battal CTR, MS0240060 Copper Jan 1, 2026 – Dec 31, 2028 DS000 0 Not recorded
Harrison Naval Construction Battal CTR, MS0240060 Lead Jan 1, 2026 – Dec 31, 2028 DS000 20 0.002 MG/L 90th percentile
Harrison Naval Construction Battal CTR, MS0240060 Lead Jan 1, 2026 – Dec 31, 2028 DS000 20 0.0052 MG/L
Harrison Naval Construction Battal CTR, MS0240060 Lead Jan 1, 2026 – Dec 31, 2028 DS000 0 Not recorded
Harrison Naval Construction Battal CTR, MS0240060 Copper Jan 1, 2024 – Dec 31, 2026 DS000 8 0.098 MG/L 90th percentile
Harrison Naval Construction Battal CTR, MS0240060 Copper Jan 1, 2024 – Dec 31, 2026 DS000 8 0.105 MG/L