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EPA ID TN0000450 · checked 16 Oct 2026

Memphis tap water: what EPA testing found

Memphis Light, Gas and Water (EPA record: MEMPHIS LIGHT, GAS, & WATER) serves 659,500 people in TN from ground water.

What the data shows

No PFAS above EPA’s limits, lithium below the screening level, and no health-based violations since 2016 in this data.

PFAS and lithium (EPA UCMR 5)

600 results from 10 sampling points, 22 Apr 2024 to 2 Oct 2024. Averages count results below EPA’s reporting level as zero, as the PFAS rule does. Every number links to EPA’s UCMR 5 Data Finder (search PWSID TN0000450). Limits: EPA PFAS rule.

ContaminantDetected inHighest resultAverageEPA limit
PFOA0 of 20not detected0 ng/L4 ng/L
PFOS0 of 20not detected0 ng/L4 ng/L
PFHxS0 of 20not detected0 ng/L10 ng/L*
PFNA0 of 20not detected0 ng/L10 ng/L*
HFPO-DA0 of 20not detected0 ng/L10 ng/L*
Lithium0 of 20not detected0 µg/Lnone (screening level 10 µg/L)

* PFHxS, PFNA and HFPO-DA limits (and the PFAS hazard index) are in the rule, but EPA proposed on 20 May 2026 to rescind them; not final as of 16 Oct 2026. UCMR 5 results are screening data, not compliance results: compliance uses quarterly running averages from 2029. Source file: EPA UCMR 5 occurrence data (dated 15 Oct 2026).

Health-based violations since 2016

None in EPA’s SDWIS data.

Source: EPA SDWIS via Envirofacts and the ECHO report for TN0000450, retrieved 16 Oct 2026.

Hardness

2.8 grains per gallon (average, 2025), from the utility’s water report checked 16 Oct 2026. Size a softener for this water.

Places and ZIP codes served

Memphis, Cordova, Germantown, Millington, Collierville, Arlington, Brunswick, Eads, Ellendale.

38002 38014 38016 38017 38018 38027 38028 38029 38053 38054 38083 38088 38101 38103 38104 38105 38106 38107 38108 38109 38111 38112 38113 38114 38115 38116 38117 38118 38119 38120 38122 38124 38125 38126 38127 38128 38130 38131 38132 38133 38134 38135 38137 38138 38139 38141 38157 38167 38168 38173 38174 38175 38177 38181 38182 38183 38184 38186 38187 38190

ZIP codes the system reported to EPA for UCMR 5; place names from GeoNames (CC BY 4.0). A ZIP code can be split between systems.