In 1986, federal law banned lead solder in residential plumbing and lead-containing flux for soldered pipe joints. Homes built or replumbed after that date are largely safe from interior lead exposure. Homes built before — especially homes built before 1950 — are a different story.
If you live in a Triangle home built before 1986, this is worth understanding. Lead exposure in drinking water doesn't cause acute symptoms; it accumulates. Children and pregnant women are most vulnerable, and any detectable exposure is worth eliminating.
Where pre-1986 Triangle housing concentrates
Different Triangle cities have very different older-housing footprints:
- Raleigh — Five Points, Hayes Barton, Boylan Heights, Mordecai, parts of Cameron Park, ITB streets
- Durham — Trinity Park, Old North Durham, Watts-Hillandale, Forest Hills, parts of Hope Valley
- Chapel Hill — Northside, Pine Knolls, the older blocks of Westwood
- Carrboro — north of Main St, around Lloyd-Broad
- Hillsborough — the entire historic district (some homes pre-1900)
- Burlington — Beverly Hills, Glencoe mill village, central downtown blocks
- Smithfield — Hastings Historic District, south of Market St
Newer subdivisions in Apex, Cary, Morrisville, Holly Springs, Wake Forest, Knightdale, Rolesville, Wendell, and similar post-2000 growth areas carry minimal lead risk. The 1986 cutoff is the most reliable shorthand: if your house has a 4-digit street number and was built after 1986, you're almost certainly fine.
How to know if your home has lead solder
Two checks: visual inspection and a water test. Visual first.
Look at the joints where copper pipes meet under your kitchen sink, in the basement, or at your water heater inlet. Lead solder is gray-silver, soft, and dull. Lead-free solder (post-1986) is brighter silver or has a faint blue-green tint at the joint from the modern flux.
Visual inspection isn't definitive — some pre-1986 homes have been partially or fully replumbed since. The certain answer is a tap water test. A first-draw sample (water that's been sitting in pipes overnight) is more revealing than a flushed sample.
What lead levels mean
- Below 5 ppb — not a concern, no action needed
- 5-15 ppb — detectable but below EPA action level; consider RO for drinking water
- Above 15 ppb — EPA action level exceeded; mitigation strongly recommended
- Above 50 ppb — significant exposure; pipe replacement is the long-term answer
Your utility's annual CCR reports finished water at the treatment plant — typically 0.001-0.003 ppm (1-3 ppb) in the Triangle. That's compliant and not the issue. The issue is what happens between the utility meter and your tap.
The four options for lead mitigation
1. Whole-house pipe replacement (~$8,000-$25,000)
The most thorough answer is replacing interior plumbing with PEX or modern copper using lead-free joints. This is expensive, disruptive, and rarely worth it unless you're already remodeling or your lead levels are severely elevated.
2. Under-sink reverse osmosis at the kitchen sink (~$1,500 installed)
An RO unit at the kitchen sink removes 95-99% of lead from drinking and cooking water. This is the most cost-effective answer for the vast majority of pre-1986 households. You're still showering and washing dishes in unfiltered water, but acute exposure happens through ingestion — drinking and cooking — not skin contact.
3. Lead-certified pitcher filters (~$30-$80)
NSF/ANSI Standard 53 certified pitchers (look for the certification, not just 'reduces lead' marketing) achieve 95%+ lead reduction. The catch: pitcher filters degrade quickly and need replacing every 1-3 months. For temporary use or rentals this is fine. For long-term residence, RO is more reliable.
4. Whole-home carbon (does NOT remove lead well)
Standard whole-home activated carbon does not efficiently remove lead. Lead is a heavy metal, not an organic compound, and carbon adsorption doesn't work the same way on it. If a salesperson tells you a whole-home carbon system handles lead, they're either confused or being dishonest. The right answer is RO at the drinking tap.
What to do tomorrow
If you're in a pre-1986 Triangle home and haven't tested: get a lab-grade first-draw lead test. NC DEQ's certified labs run about $40-60. If levels are above 5 ppb, install an under-sink RO. The whole intervention costs less than $2,000 and addresses the actual exposure mechanism.