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Tap water quality report

Spiro, OK

EPA monitoring detected 16 contaminants across the 3 water suppliers serving Spiro. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

3
water suppliers
13,094
people served
16
contaminants found
Oklahoma rankings Lead in Oklahoma PFAS in Oklahoma

What was found in Spiro'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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
320 µg/L 3.2%
of the EPA limit 10000 µg/L
Highest in the city: SPIRO · 2,200 people · 2019
1/3 SYR4
Copper
196.1 µg/L 15%
of the EPA limit 1300 µg/L
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2017
Highest in the city: 300 µg/L — SPIRO EAST WATER ASSOCIATION · 1,817 people · 2018
3/3 SYR4
TTHM
127.85 µg/L 160%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2019
Highest in the city: 131.25 µg/L — SPIRO EAST WATER ASSOCIATION · 1,817 people · 2019
3/3 SYR4
Chloroform
115.55 µg/L
No EPA limit set
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2019
3/3 SYR4
Total Haloacetic Acids (HAA5)
73.12 µg/L 122%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2019
Highest in the city: 94 µg/L — SPIRO EAST WATER ASSOCIATION · 1,817 people · 2019
3/3 SYR4
Dichloroacetic Acid
40.965 µg/L
No EPA limit set
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2019
Highest in the city: 46.395 µg/L — SPIRO EAST WATER ASSOCIATION · 1,817 people · 2019
3/3 SYR4
Trichloroacetic Acid
29.665 µg/L
No EPA limit set
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2019
Highest in the city: 43.075 µg/L — SPIRO EAST WATER ASSOCIATION · 1,817 people · 2019
3/3 SYR4
Lead
10.77 µg/L 72%
of the EPA limit 15 µg/L
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2017
Highest in the city: 42.235 µg/L — SPIRO EAST WATER ASSOCIATION · 1,817 people · 2018
2/3 SYR4
Barium
18 µg/L 0.9%
of the EPA limit 2000 µg/L
Highest in the city: SPIRO · 2,200 people · 2012
1/3 SYR4
Bromodichloromethane
15.775 µg/L
No EPA limit set
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2019
Highest in the city: 17.19 µg/L — SPIRO · 2,200 people · 2019
3/3 SYR4
Monochloroacetic Acid
8.45 µg/L
No EPA limit set
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2019
Highest in the city: 9.921 µg/L — SPIRO EAST WATER ASSOCIATION · 1,817 people · 2019
3/3 SYR4
Dibromochloromethane
4.12 µg/L
No EPA limit set
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2019
3/3 SYR4
Gross Beta Particle Activity
4.1135 pCi/L
No EPA limit set
Highest in the city: SPIRO · 2,200 people · 2019
1/3 SYR4
Dibromoacetic Acid
1.0395 µg/L
No EPA limit set
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2019
Highest in the city: 1.5575 µg/L — SPIRO EAST WATER ASSOCIATION · 1,817 people · 2019
3/3 SYR4
Combined Radium (-226 And -228)
1.51 pCi/L 30%
of the EPA limit 5 pCi/L
Highest in the city: SPIRO · 2,200 people · 2019
1/3 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: LEFLORE CO. RWD #14 · 9,077 people · 2023
3/3 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 Spiro

SupplierPopulation served
LEFLORE CO. RWD #14 9,077
SPIRO 2,200
SPIRO EAST WATER ASSOCIATION 1,817

Frequently asked questions about Spiro tap water

Is Spiro tap water safe to drink?

EPA testing detected 16 contaminants in the water serving Spiro. 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 Spiro?

3 public water suppliers report drinking-water monitoring for Spiro, Oklahoma to the EPA. Each is listed above with its population served.

What contaminants are in Spiro's water?

The contaminants EPA monitoring detected in Spiro include Nitrate-Nitrite, Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5). 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.