Is Sheridan, AR Tap Water Safe? Quality & Contaminants

What was found in Sheridan's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Fluoride	930 µg/L 23% of the EPA limit 4000 µg/L Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2019 Highest in the city: 1200 µg/L — SOUTH SHERIDAN WATER ASSOC · 3,887 people · 2019	2/4	SYR4
Copper	881.5499999999998 µg/L 68% of the EPA limit 1300 µg/L Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2018	4/4	SYR4
Nitrate-Nitrite	160 µg/L 1.6% of the EPA limit 10000 µg/L Highest in the city: SOUTH SHERIDAN WATER ASSOC · 3,887 people · 2019	1/4	SYR4
Lithium	27.3 µg/L No EPA limit set Highest in the city: CENTER GROVE WATER ASSOCIATION · 3,858 people · 2024	3/4	UCMR-5
TTHM	9.53 µg/L 12% of the EPA limit 80 µg/L Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2019	4/4	SYR4
Lead	7.27 µg/L 48% of the EPA limit 15 µg/L Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2019	4/4	SYR4
Total Haloacetic Acids (HAA5)	6.72 µg/L 11% of the EPA limit 60 µg/L Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2019	4/4	SYR4
Di(2-ethylhexyl) Phthalate	5.04 µg/L 84% of the EPA limit 6 µg/L Highest in the city: SOUTH SHERIDAN WATER ASSOC · 3,887 people · 2019	1/4	SYR4
Gross Beta Particle Activity	2.76 pCi/L No EPA limit set Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2019 Highest in the city: 4.97 pCi/L — CENTER GROVE WATER ASSOCIATION · 3,858 people · 2019	3/4	SYR4
Chloroform	3.4 µg/L No EPA limit set Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2019	4/4	SYR4
Bromodichloromethane	3.3649999999999998 µg/L No EPA limit set Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2019	4/4	SYR4
Dichloroacetic Acid	2.96 µg/L No EPA limit set Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2019	4/4	SYR4
Dibromochloromethane	2.75 µg/L No EPA limit set Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2019 Highest in the city: 2.8549999999999995 µg/L — LITTLE CREEK WATER ASSOCIATION · 2,561 people · 2019	4/4	SYR4
Trichloroacetic Acid	2.03 µg/L No EPA limit set Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2019	4/4	SYR4
Dibromoacetic Acid	1.74 µg/L No EPA limit set Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2019	4/4	SYR4
Bromoform	1.3 µg/L No EPA limit set Highest in the city: CENTER GROVE WATER ASSOCIATION · 3,858 people · 2019	2/4	SYR4
Monobromoacetic Acid	1 µg/L No EPA limit set Highest in the city: SOUTH SHERIDAN WATER ASSOC · 3,887 people · 2019	1/4	SYR4
Lead	0.0070 mg/L 47% of the EPA limit 0.0150 mg/L Main supplier: SHERIDAN WATERWORKS · 4,605 people · 2025	4/4	LCR

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Sheridan

Supplier	Population served
SHERIDAN WATERWORKS	4,605
SOUTH SHERIDAN WATER ASSOC	3,887
CENTER GROVE WATER ASSOCIATION	3,858
LITTLE CREEK WATER ASSOCIATION	2,561

Frequently asked questions about Sheridan tap water

Is Sheridan tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Sheridan. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Sheridan?

4 public water suppliers report drinking-water monitoring for Sheridan, Arkansas to the EPA. Each is listed above with its population served.

What contaminants are in Sheridan's water?

The contaminants EPA monitoring detected in Sheridan include Fluoride, Copper, Nitrate-Nitrite, Lithium, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.