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Tap water quality report

Hillsborough, NC

EPA monitoring detected 23 contaminants across the 3 water suppliers serving Hillsborough. 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
14,087
people served
23
contaminants found
North Carolina rankings Lead in North Carolina PFAS in North Carolina

What was found in Hillsborough'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
1460 µg/L 15%
of the EPA limit 10000 µg/L
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
Highest in the city: 3240 µg/L — WOODLAND PARK · 41 people · 2019
3/3 SYR4
Nitrate-Nitrite
3106 µg/L 31%
of the EPA limit 10000 µg/L
Highest in the city: WOODLAND PARK · 41 people · 2015
2/3 SYR4
Fluoride
839.75 µg/L 21%
of the EPA limit 4000 µg/L
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
3/3 SYR4
Copper
281.2 µg/L 22%
of the EPA limit 1300 µg/L
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
2/3 SYR4
Barium
140 µg/L 7%
of the EPA limit 2000 µg/L
Highest in the city: CAROLANTIC PARK · 40 people · 2019
2/3 SYR4
TTHM
87.365 µg/L 109%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
2/3 SYR4
Chloroform
62.73 µg/L
No EPA limit set
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
2/3 SYR4
Total Haloacetic Acids (HAA5)
58.775 µg/L 98%
of the EPA limit 60 µg/L
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
3/3 SYR4
Trichloroacetic Acid
27.63 µg/L
No EPA limit set
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
2/3 SYR4
Dichloroacetic Acid
26.105 µg/L
No EPA limit set
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
3/3 SYR4
Lead
22 µg/L 147%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
2/3 SYR4
Bromodichloromethane
9.745 µg/L
No EPA limit set
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
2/3 SYR4
Dibromoacetic Acid
9 µg/L
No EPA limit set
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
1/3 SYR4
Di(2-ethylhexyl) Phthalate
5.16 µg/L 86%
of the EPA limit 6 µg/L
Highest in the city: CAROLANTIC PARK · 40 people · 2019
1/3 SYR4
Di(2-ethylhexyl) Adipate
4.1 µg/L 1%
of the EPA limit 400 µg/L
Highest in the city: CAROLANTIC PARK · 40 people · 2019
1/3 SYR4
Dibromochloromethane
1.655 µg/L
No EPA limit set
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
Highest in the city: 2.065 µg/L — CAROLANTIC PARK · 40 people · 2019
2/3 SYR4
Antimony, Total
1.3 µg/L 22%
of the EPA limit 6 µg/L
Highest in the city: WOODLAND PARK · 41 people · 2019
1/3 SYR4
Selenium
1.3 µg/L 2.6%
of the EPA limit 50 µg/L
Highest in the city: CAROLANTIC PARK · 40 people · 2019
1/3 SYR4
Combined Radium (-226 And -228)
1.2 pCi/L 24%
of the EPA limit 5 pCi/L
Highest in the city: WOODLAND PARK · 41 people · 2016
1/3 SYR4
Gross Alpha, Excl. Radon And U
1.1 pCi/L 7.3%
of the EPA limit 15 pCi/L
Highest in the city: CAROLANTIC PARK · 40 people · 2016
2/3 SYR4
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
Highest in the city: CAROLANTIC PARK · 40 people · 2019
1/3 SYR4
Atrazine
0.3000 µg/L 10%
of the EPA limit 3 µg/L
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2019
1/3 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: HILLSBOROUGH, TOWN OF · 14,006 people · 2025
2/3 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 Hillsborough

SupplierPopulation served
HILLSBOROUGH, TOWN OF 14,006
WOODLAND PARK 41
CAROLANTIC PARK 40

Frequently asked questions about Hillsborough tap water

Is Hillsborough tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Hillsborough. 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 Hillsborough?

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

What contaminants are in Hillsborough's water?

The contaminants EPA monitoring detected in Hillsborough include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.